[go: up one dir, main page]

EP3976548A1 - Mortier conducteur - Google Patents

Mortier conducteur

Info

Publication number
EP3976548A1
EP3976548A1 EP20728050.4A EP20728050A EP3976548A1 EP 3976548 A1 EP3976548 A1 EP 3976548A1 EP 20728050 A EP20728050 A EP 20728050A EP 3976548 A1 EP3976548 A1 EP 3976548A1
Authority
EP
European Patent Office
Prior art keywords
weight
slag
binder
iron
binder composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20728050.4A
Other languages
German (de)
English (en)
Inventor
Jürg Sturzenegger
Steffen Kelch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sika Technology AG
Original Assignee
Sika Technology AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sika Technology AG filed Critical Sika Technology AG
Priority to EP22182425.3A priority Critical patent/EP4101824A1/fr
Publication of EP3976548A1 publication Critical patent/EP3976548A1/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/006—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mineral polymers, e.g. geopolymers of the Davidovits type
    • C04B28/008—Mineral polymers other than those of the Davidovits type, e.g. from a reaction mixture containing waterglass
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/067—Slags
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B26/14—Polyepoxides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B26/16—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/006—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mineral polymers, e.g. geopolymers of the Davidovits type
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/021—Ash cements, e.g. fly ash cements ; Cements based on incineration residues, e.g. alkali-activated slags from waste incineration ; Kiln dust cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/06—Aluminous cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/06—Aluminous cements
    • C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/08—Slag cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/10—Lime cements or magnesium oxide cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C04B2111/00508—Cement paints
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/60—Flooring materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/90—Electrical properties
    • C04B2111/94—Electrically conducting materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the invention relates to binder compositions with improved electrical conductivity, as well as their production and use as mortar, screed, plaster, casting compound, coating, leveling compound or for sacrificial anodes.
  • Building materials with electrically conductive properties are prescribed or desirable in many areas. For example, good electrical conductivity is required for floors in rooms at risk of explosion to prevent the formation of sparks in the event of electrostatic charge. Also in rooms where medical devices are used or in
  • An electrically conductive and possibly still magnetic building material is also advantageous for the electrostatic shielding of spatial areas.
  • No. 3,962,142 describes a cementitious mixture which contains electrically conductive material with large and small particle sizes.
  • the electrically conductive material is calcined petroleum coke and acetylene black.
  • EP 2 476 658 describes a binding mixture for the production of
  • thermally conductive screeds The binding mixture contains 2 to 3% by weight of graphite, 90% of which has particles with a size of 125-400 ⁇ m.
  • Soot or graphite dust are fine, black, dusty materials, the handling of which is typically associated with the deposition of black dust in the environment. Soot and graphite dust can negatively affect the processability of the material and reduce the effectiveness of additives. Furthermore, the homogeneous mixing of fibers into a binder matrix is difficult and the presence of fibers typically impairs processability. The addition of soot or graphite dust, carbon fibers or metal fibers also increases the cost of the material.
  • the object of the present invention is to provide a binder composition for the production of materials with improved electrical conductivity, which can be processed easily and easily and which overcomes the disadvantages of the prior art.
  • binder compositions which contain iron-containing slag show improved electrical conductivity.
  • the iron-containing slag can be used in large quantities and without any loss of quality in the binder composition.
  • the binder composition containing iron-containing slag shows good properties, such as, in particular, high strength and good processability.
  • the properties, in particular the strength are even improved compared to the prior art.
  • waste products such as slag
  • binder compositions means an ecological advantage over the use of specially prepared fillers from natural deposits.
  • the increasingly scarce natural raw material sources are spared and, on the other hand, they become less
  • the electrically conductive material additionally has magnetic properties, which is possible through the use of iron-containing slag with magnetic properties.
  • the electrically conductive material also has an improved thermal
  • the invention relates to the use of a binder composition, comprising at least one binder and at least one mineral filler, for the production of materials with improved electrical conductivity at 20 ° C, characterized in that at least 20% by weight, preferably at least 30% by weight , more preferably at least 40% by weight, even more preferably at least 50% by weight, in particular at least 60% by weight, in particular at least 70% by weight, of the mineral filler are iron-containing slag.
  • An improved electrical conductivity within the meaning of the invention is particularly present when the electrical resistance of the material containing iron-containing slag is the same compared to a material
  • the binder composition has but instead of the iron-containing slag Contains quartz sand of the same grain size is reduced by a factor of at least 1.5. A lower electrical resistance means better electrical conductivity.
  • the binder composition preferably comprises 30 to 95% by weight, particularly preferably 40 to 90% by weight, in particular 50 to 85% by weight, mineral filler, based on the total weight of the dry binder composition.
  • the binder composition preferably has a proportion of iron-containing slag of 10 to 95% by weight, more preferably 20 to 80%
  • a “binding agent” is understood to mean a powdery or liquid material that can be converted into a solid shaped body by a suitable reaction.
  • the binder can be in one component, which means that it reacts to form one when water is added
  • Solid or it can be multicomponent, that is, it reacts after mixing the components, optionally with the addition of water, to form a solid.
  • the binder forms a compact together with the filler after hardening
  • the binder can be mineral or organic
  • a hydraulic binding agent eg cement
  • a latent hydraulic binding agent eg finely ground blast furnace slag
  • pozzolanic binding agent e.g. fly ash
  • a non-hydraulic binding agent e.g. gypsum
  • the binder consists of at least one aluminum silicate and
  • At least one alkali silicate which, after mixing in an aqueous medium, react to form a geopolymer.
  • organic binder is understood to mean a binder which comprises at least one organic compound and is free of mineral binders.
  • the organic binder is preferably multicomponent and, after mixing the components, reacts at 20 ° C. to form a solid shaped body.
  • multicomponent organic binders are curable epoxy resins and suitable hardeners, for example polyamines, which can react to form cured epoxy resins, or polyisocyanates and polyols, which can cure to form polyurethanes, or polymerizable monomers such as monomers
  • (Meth) acrylate base which can cure, for example with polymerization initiators, to form (meth) acrylate resins.
  • the “binder composition” is a
  • Composition referred to which comprises at least one binder.
  • a “dry binder composition” is a binder composition that does not contain water.
  • containing iron if it contains at least 5% iron by weight, iron being calculated as FeO, regardless of the compound in which it is present.
  • the term “bulk density” refers to the density of a
  • Slag is typically a by-product of the extraction of metals in ore smelting, metal recycling or waste incineration. It is a mixture of substances that is mainly composed of oxides and silicates of various metals.
  • the chemical composition of slags is typically given in the form of the oxides of the elements it contains, regardless of the compounds in which the elements are effectively present.
  • the Si content is specified as S1O2
  • the Al content as Al2O3
  • the Fe content as FeO.
  • the percentage given for constituents for a composition of slag refers to the percentage of the constituent as its oxide, based on the sum of all constituents in the composition, the weight of which is also calculated in the form of their oxides.
  • the main constituents of slag are CaO, S1O2, AI2O3, MgO and FeO.
  • the proportion of these substances in the various types of slag can vary greatly.
  • the chemical composition of the slag can be determined using X-ray fluorescence analysis in accordance with DIN EN ISO 12677.
  • the iron in the slag is typically present as an iron compound, for example as iron oxide such as Fe304, Fe2O3 and / or FeO and / or as iron silicate, such as Fe2Si04, whereby various mixed crystals or mixed phases with other metals or non-metals can also be present.
  • iron oxide such as Fe304, Fe2O3 and / or FeO
  • iron silicate such as Fe2Si04
  • slag refer to this configuration, but comprises all iron present in the slag, regardless of the mineral or the compound in which it is present, converted to FeO.
  • an analytically determined amount of 10 g of iron (Fe) corresponds to an amount of 12.9 g of FeO.
  • a ferrous slag is steel slag. It is a by-product of steel recycling or steel production from pig iron. In contrast to the flea-furnace slag (FIOS), which occurs during the production of pig iron and which has an iron content, calculated as FeO, of typically less than 3% by weight steel slag contains about 5 to 45% by weight, iron, calculated as FeO.
  • Steel slag is created in several processes and steps in steel production. Examples of steel slag are Basic Oxygen Slag (BOS), which is a by-product of steel production using the oxygen blowing process, LD slag, which is produced by the Linz-Donawitz process, or Electric Furnace Slag (EOS), which is produced during steel production or steel recycling using an electric arc furnace. Further examples of steel slag are, for example, slag that occurs in other steel cleaning processes, such as slag from the
  • iron-containing slag can arise in various processes in which iron-containing slag can arise are, for example, metallurgical processes for the extraction of non-ferrous metals. These slags are known as metallurgical slag and can have a high iron content.
  • metallurgical slag is known as metallurgical slag and can have a high iron content.
  • copper slag is a by-product of copper extraction. Copper slags typically have an iron content of over 40% by weight, calculated as FeO.
  • the iron in copper slags is typically largely in the form of iron silicate. Copper slags typically have a bulk density in the region of 3.7 kg / l.
  • Slag from waste or sewage sludge incineration plants also often contains a high proportion of iron.
  • the iron-containing slag preferably comprises at least 8% by weight, more preferably at least 10% by weight, even more preferably at least 12% by weight, iron, calculated as FeO, based on the weight of the iron-containing slag.
  • the iron-containing slag comprises 8 to 70% by weight, preferably 10 to 65% by weight, in particular 12 to 60% by weight, especially 15 to 35% by weight, iron, calculated as FeO,
  • iron calculated as FeO
  • the iron-containing slag is preferably selected from the group comprising steel slag, metallurgical slag and slag from the
  • the iron-containing slag is preferably steel slag, in particular slag from the electric arc furnace, the pouring ladle, the Linz-Donawitz process or the oxygen blowing process.
  • the iron-containing slag is copper slag. Binder compositions which contain copper slag have significantly improved conductivity.
  • the iron-containing slag preferably has a bulk density of more than 3.0 g / l, in particular more than 3.2 g / l.
  • the iron-containing slag preferably has a content of free CaO of less than 1% by weight, preferably less than 0.5% by weight, based on the
  • Free CaO is understood to mean reactive calcium oxide that can react with water to form Ca (OH) 2.
  • the iron-containing slag shows an increase in volume of less than 2%, preferably less than 1.5%, after a test duration of 168 hours in the volume stability test in the steam test according to DIN EN 1744-1.
  • the iron-containing slag can consist of different iron-containing slags.
  • the binding agent composition comprises several iron-containing slags which differ in their chemical composition, in particular in their iron content.
  • a suitable iron-containing slag contains the following main ingredients:
  • Another suitable ferrous slag includes the following
  • the moisture content of the iron-containing slag is preferably below 5
  • % By weight, more preferably below 3% by weight, especially preferably below 1% by weight, in particular below 0.5% by weight.
  • the porosity of the iron-containing slag is in the range of 5% by volume. In this way, the weight of the product can be reduced without major impairment of the end properties.
  • the porosity of the iron-containing slag is over 5% by volume, so that the weight of the product can be reduced.
  • the porosity of the slag is below 5% by volume, preferably below 3% by volume.
  • the slag particles preferably have an irregular shape and / or surface and, in particular, are not spherical. This is advantageous, in particular for interlocking the particles with one another and for a good bond with the binder.
  • the slag particles can be any non-spherical
  • the particles can have geometric shape, either uniform or non-uniform.
  • the particles can have a conical, polygonal, cubic, pentagonal, hexagonal, octagonal, prismatic and / or polyhedral shape.
  • Non-uniform particles can have, for example, circular, elliptical, oval, square, rectangular, triangular or polygonal cross-sections that are at least partially located therein.
  • the terms “irregularly” or “irregularly” shaped particles relate to three-dimensional particle shapes, with at least two different cross-sections through the particles having a different shape.
  • FIG. 1 Exemplary cross-sections through slag particles with an irregular shape are shown schematically in FIG.
  • the cooling can be accelerated, for example by spraying on water.
  • the cooling process can be physical
  • a slag is advantageous, in particular a steel slag which,
  • a slag in particular a copper slag, which has been granulated as a slag stream with a pressurized water jet, is also advantageous.
  • any free CaO that may be present is converted into Ca (OH) 2 through contact with water, which is desirable.
  • the iron-containing slag additionally has magnetic properties.
  • the iron-containing slag preferably has a particle size of at most 16 mm, more preferably at most 8 mm, even more preferably at most 4 mm, in particular at most 3.5 mm.
  • a maximum of 10% by weight of the iron-containing slag has a particle size of less than 0.06 mm.
  • the iron-containing slag particularly preferably has a particle size of 0.06 to 8 mm, preferably 0.06 to 4 mm, more preferably 0.06 to 3.5 mm.
  • Slag particles with a suitable grain size can be obtained, for example, by fractionation, typically by sieving.
  • the slag can be comminuted by breaking and / or grinding. Such methods are known to the person skilled in the art.
  • the particle size can be determined by a sieving method according to DIN EN 933-1.
  • the slag advantageously has the same or comparable particle size distribution (grading curve) as the fillers which are customary for the respective application and which are replaced by the slag. This can be achieved by mixing suitable grain size fractions.
  • the binder composition, in addition to the iron-containing slag is mixed with a further material which has a high content of iron and which is obtained in particular during steel forming.
  • One such material is mill scale, for example. Mill scale is a by-product that is produced when the steel is rolled and typically contains 70-80% iron by weight, calculated as FeO.
  • the mill scale is preferably free of oil.
  • the binder composition additionally comprises mill scale.
  • the proportion of mill scale in the binder composition is preferably 0.1 to 10% by weight, in particular 1 to 8% by weight, based on the
  • Fillers are chemically inert, solid, particulate substances and are offered in different shapes, sizes and as different materials.
  • Mineral fillers can vary from fine sand particles to large, coarse stones.
  • Particularly suitable fillers are sand, gravel, crushed stones, calcined pebbles or light fillers, such as in particular clay, pumice stone, perlite or vermiculite. More suitable
  • Fillers are ground limestone, chalk, quartz powder, titanium dioxide,
  • the filler preferably comprises powdered limestone, chalk, powdered quartz, fine titanium dioxide, heavy spar powder, fine aluminum oxide, limestone sand or quartz sand, or mixtures thereof.
  • the particle size of the fillers depends on the respective application and can be up to 32 mm or more.
  • the particle size is preferably a maximum of 16 mm, particularly preferably a maximum of 8 mm.
  • the particle size of the fillers is particularly preferably below 4 mm.
  • the fillers have a particle size in the range from 0.1 ⁇ m to 3.5 mm.
  • Particle size can be determined by a sieving method according to DIN EN 933-1. Fillers of different particle sizes are advantageously mixed in accordance with the desired grading curve. Suitable grading curves for various applications are known to the person skilled in the art.
  • the binder composition preferably comprises at least one fine mineral filler, preferably with a particle size of at most 0.1 mm, selected from the group consisting of limestone powder, chalk, Quartz flour, fine titanium dioxide, barite flour, silica fume and fine aluminum oxide, and mixtures thereof.
  • the binder composition preferably contains slag with a particle size of more than 0.06 mm and fine mineral filler, which is not a slag, with a particle size of at most 0.1 mm.
  • fine mineral fillers can in particular increase the tightness of the structure and thus contribute to improving the durability of a cured binder composition.
  • Calcium carbonate with a particle diameter of no more than 10 pm accelerate the strength development of the binder composition after adding water.
  • the binder composition preferably contains no further fillers.
  • Such binder compositions can be processed well and result in materials with good strength after curing.
  • the binder composition contains slag as the only filler.
  • the slag comprises all mineral particles in the binder composition with a size of about 0.1 ⁇ m up to 1 mm, 2 mm, 4 mm, 8 mm, or more. This is advantageous for improved electrical and also improved thermal conductivity of the cured binder composition and for maximum utilization of the slag.
  • the binder comprises at least one mineral binder.
  • the mineral binder preferably comprises a binder which, in the presence of water, reacts in a hydration reaction to form solid hydrates or hydrate phases. This is particularly a hydraulic one
  • Binder which can also be hardened under water after adding water, such as in particular cement or hydraulic lime, or a latent hydraulic binder, which sets under the action of additives with water, such as in particular blast furnace slag, or pozzolanic binders such as
  • fly ash in particular fly ash, or a non-hydraulic binder, such as in particular calcium sulfate in the form of anhydrite, or hemihydrate gypsum.
  • non-hydraulic binder such as in particular calcium sulfate in the form of anhydrite, or hemihydrate gypsum.
  • the mineral binder is preferably selected from the group consisting of cement, gypsum, quicklime, fly ash and slag sand.
  • the mineral binding agent preferably comprises at least one hydraulic binding agent, preferably a cementitious binding agent.
  • the mineral binder is particularly preferably a cement according to DIN EN 197-1, a calcium sulfoaluminate cement or a calcium aluminate cement, or mixtures thereof. Any available cement type or a mixture of two or more cement types can be used as cement, for example the cements classified under DIN EN 197-1:
  • CEM III Blast furnace slag cement
  • CEM IV pozzolanic cement
  • CEM V composite cement
  • Portland cement or a cement containing Portland cement according to DIN EN 197-1. Portland cement is particularly readily available and enables the production of materials with good quality
  • the mineral binder contains other binders in addition to or instead of the cement.
  • Suitable latent hydraulic and / or pozzolanic binders are in particular blast furnace slag, fly ash and / or silica fume (amorphous S1O2, silica fume).
  • the mineral binder in addition to Portland cement, also contains finely ground blast furnace slag, fly ash and / or silica dust, preferably in 2 to 95% by weight, in particular 5 to 65% % By weight, particularly preferably 10 to 40% by weight, based on the total weight of the mineral binder.
  • the content of cement in the binder composition is advantageously 5 to 50% by weight, preferably 10 to 45% by weight, based on 100% by weight
  • the binding agent is Portland cement, optionally in combination with fly ash and / or finely ground slag sand.
  • An advantageous binder composition comprising cement contains:
  • Binder composition
  • the binder advantageously also comprises at least one epoxy resin and at least one hardener for the epoxy resin.
  • the chemical as well as physical resistance of the cured binder composition can be improved.
  • Epoxy resins are low molecular weight or polymeric compounds that contain epoxy groups. Suitable epoxy resins for the production of plastics are known in the prior art and are commercially available. If the epoxy resins are equipped with a defined number of epoxy groups per molecule, they preferably have at least two epoxy groups per molecule Molecule, for example two, three, four or more epoxy groups per molecule. If the epoxy resin is a polymer with a varying number of epoxy groups in the molecule, it has on average more than one epoxy group per molecule. The epoxy resin then preferably contains an average of at least two epoxy groups per molecule. According to the invention, mixtures of different epoxy resins can be used, for example of two, three or more different epoxy resins.
  • the epoxy resin is preferably a liquid resin or a mixture containing two or more epoxy liquid resins.
  • a technical polyepoxide with a glass transition temperature below 25 ° C is called “liquid epoxy resin”. If necessary, the epoxy resin composition additionally contains proportions of solid epoxy resin.
  • the epoxy resin is in particular a liquid resin based on a
  • Bisphenol in particular a bisphenol-A diglycidyl ether and / or bisphenol-F diglycidyl ether, such as are commercially available, for example from Olin, Fluntsman or Momentive.
  • These liquid resins have a low viscosity for epoxy resins and enable rapid curing and the maintenance of high-modulus and high-pressure-resistant materials.
  • They can contain proportions of bisphenol A solid resin or novolak glycidyl ethers.
  • At least one reactive diluent can also advantageously be added to the epoxy resin.
  • Suitable reactive diluents are low-viscosity, aliphatic or cycloaliphatic compounds containing epoxy groups.
  • Emulsifiers, in particular nonionic emulsifiers, can also be added to the epoxy resin. This improves the emulsifiability during processing of the composition.
  • the epoxy resin is advantageously emulsified or dispersed in water.
  • epoxy resin emulsions are especially suitable, in particular Sika ® Repair / Sikafloor ® EpoCem ® module A (Sika), or epoxy resin emulsions of Fierstellern as Fluntsman, Dow or Momentive.
  • the epoxy resin reacts with a suitable hardener to form a solid.
  • Customary and known compounds which react with the epoxy groups can be used as hardeners. This cross-links the epoxy resin.
  • the hardeners are preferably basic hardeners, in particular amine compounds or amides.
  • the hardener is a polyamine with at least three opposite
  • Amine hydrogens reactive with epoxy groups are hydrogen atoms that are bound directly to an amine nitrogen atom and can react with epoxy groups.
  • the hardener preferably contains at least two primary or secondary
  • Polyamines are preferably present in the binder composition in such an amount that the molar ratio of amine hydrogen to epoxide groups is in the range from 0.6 to 1.5, in particular 0.8 to 1.2.
  • mixtures of different hardeners can be used, for example of two, three or more different hardeners.
  • the amine with at least three amine hydrogens reactive toward epoxide groups is preferably a water-dilutable amine or a component of a water-dilutable amine mixture.
  • a suitable water-dilutable amine mixture comprises in particular a mixture of (i) di- or polyamines, (ii) polyalkylene amines and (iii) amine-functionalized adducts of amines with epoxides.
  • water dilutable means that when a liquid is mixed with water it forms a homogeneous mixture without phase separation.
  • Suitable amine hardeners for the epoxy resin are commercially available, in particular as Sika ® Repair / Sikafloor ® EpoCem ® Modul B (from Sika), Beckopox ® EH 623w or Beckocure ® EH 2100w / 44WA (both from Allnex), Epilink ® 701 (from Evonik) , Incorez ® 148/700 (of Incorez) or DEH ® 804 (from Dow). They can be used as such or diluted with water.
  • An advantageous binder composition comprising at least one epoxy resin, at least one hardener for the epoxy resin and cement contains:
  • An advantageous binder composition that comprises an epoxy resin, a hardener for the epoxy resin and a hydraulic binder is a three-component system.
  • a liquid component, the resin component, the epoxy resin, a second liquid component, the hardener component, the hardener, and a solid component comprises the fillers and the hydraulic binder.
  • the resin component and / or the hardener component are preferably present in an aqueous solution, suspension or emulsion and contain that for the hydraulic reaction
  • Binding agent necessary water.
  • the three components are advantageously separated from one another in separate containers until they are processed.
  • the mineral binder likewise preferably comprises at least one aluminum silicate and at least one alkali metal silicate. These react in
  • Geopolymers are considered to be environmentally friendly building materials because the production of their raw materials creates significantly less CO2 than the production of Portland cement.
  • All aluminum silicates with which a geopolymer can be produced are suitable as aluminum silicate.
  • Particularly suitable aluminum silicates are clay, calcined clay, fly ash, finely ground blast furnace slag, zeolite and feldspar or mixtures thereof.
  • Preferred aluminum silicates are selected from the group consisting of clay, calcined clay, fly ash and blast furnace slag.
  • “Clay” is the name given to water-containing aluminum silicate that is formed during weathering processes.
  • the clays include kaolinite, bentonite, common clays, and kaolinite clays.
  • the reaction product from calcining a clay mineral, for example metakaolin, is called "calcined clay”.
  • “Fly ash” is a by-product from coal-fired power plants that is filtered out of the exhaust air in the form of a fine powder.
  • slag sand it is mainly amorphous, non-metallic
  • Alkali silicate is also known as water glass and is a substance of the formula M2O * n S1O2, where M stands for Na, K or Li and n for the ratio of S1O2 to M2O.
  • Commercially available alkali silicates typically have values of n in the range from about 0.5 to 4.
  • Alkali silicate dissolved in water is an alkaline, clear, colloidal solution or gel.
  • the alkali silicates also include orthosilicates, M4O4S1 where n is 0.5, and metasilicates, M2O3S1 where n is 1.
  • the alkali silicate is a sodium and / or potassium silicate.
  • the alkali silicate preferably has a molar ratio of S1O2 to M2O in the range from 0.8 to 2.4, preferably from 1.0 to 2.0, in particular from 1.4 to 2.0. This preferred ratio can have been set by adding, for example, NaOH or KOH.
  • the alkali silicate for the geopolymer is preferably an aqueous alkali silicate.
  • the weight ratio of aluminum silicate to alkali metal silicate in this binder composition is preferably in the range from 6: 1 to 2: 1.
  • At least one aluminum silicate and at least one alkali silicate 30 to 90% by weight of at least one filler, in particular a mineral filler, at least 20% by weight of the filler being iron-containing slag, and
  • the binder composition here is at least two-component and includes:
  • a powder component comprising the at least one
  • An aqueous component comprising the at least one
  • the alkali silicate is preferably in the form of an aqueous solution with 30 to 50% by weight of alkali silicate.
  • the binder comprises an organic binder, in particular at least one
  • epoxy resins reactive thinners and hardeners for the epoxy resin are
  • binder compositions which contain an epoxy resin as a binder and are free of mineral binders are preferred
  • An advantageous binder composition which comprises at least one epoxy resin and at least one hardener for the epoxy resin and which is free of mineral binders contains: - 5 to 20% by weight, preferably 7 to 15% by weight, of at least one epoxy resin,
  • At least one filler in particular a mineral filler, at least 20% by weight of the filler being iron-containing slag, and
  • An advantageous binder composition in this case is a three-component system.
  • a liquid component the resin component, the epoxy resin, a second liquid component, the hardener component, the hardener for the epoxy resin, and a solid component, the fillers.
  • Suitable commercially available resin and hardener components for the epoxy resin are, for example, Sikadur ® -42 component A, containing the epoxy resin, and Sikadur ® -42 component B, containing the hardener, both available from Sika.
  • the three components are advantageously separated from one another in separate containers until they are processed.
  • the filler into the resin component and / or the hardener component.
  • the system is two-part.
  • the binder likewise advantageously comprises a polyisocyanate and at least one polyol and is free from mineral binders.
  • Polyisocyanate is understood to mean a compound which contains two or more isocyanate groups.
  • polyisocyanate also includes polymers containing isocyanate groups.
  • Polyisocyanates produce polyurethanes through a reaction with atmospheric moisture or with polyols.
  • polyurethane refers to polymers that are formed by the so-called diisocyanate polyaddition. In addition to the urethane groups, these polymers can also contain other groups, in particular
  • Preferred polyisocyanates are aliphatic, cycloaliphatic or aromatic diisocyanates, in particular 1,6-hexamethylene diisocyanate (HDI), 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane (isophorone diisocyanate or IPDI), perhydro-2,4 '- and / or -4,4'-diphenylmethane diisocyanate (H12MDI), 4,4'-diphenylmethane diisocyanate, optionally with proportions of 2,4'- and / or 2,2'-diphenylmethane diisocyanate (MDI), 2,4 - Tolylene diisocyanate or mixtures thereof with 2,6-tolylene diisocyanate (TDI), mixtures of MDI and MDI homologues (polymeric MDI or PMDI) or oligomeric isocyanates.
  • HDI 1,6-hexamethylene diisocyan
  • a suitable polymer containing isocyanate groups is obtained in particular from the reaction of at least one polyol with a
  • Suitable polyols are in particular the following commercially available polyols or mixtures thereof:
  • Polyether polyols in particular polyoxyalkylene diols and / or polyoxyalkylene triols.
  • Preferred polyether polyols are polyoxypropylene diols,
  • Polyoxypropylene triols or ethylene oxide-terminated (EO-endcapped) polyoxypropylene diols or triols are examples of polyoxypropylene triols or ethylene oxide-terminated (EO-endcapped) polyoxypropylene diols or triols.
  • Polyester polyols also called oligoesterols, prepared by known processes, in particular the polycondensation of hydroxycarboxylic acids or lactones or the polycondensation of aliphatic and / or aromatic polycarboxylic acids with dihydric or polyhydric alcohols.
  • Polyester diols are particularly suitable polyester polyols.
  • Polycarbonate polyols as they are accessible by reacting, for example, the abovementioned - alcohols used to synthesize the polyester polyols - with dialkyl carbonates, diaryl carbonates or phosgene.
  • - At least two hydroxyl-bearing block copolymers which have at least two different blocks with a polyether, polyester and / or polycarbonate structure of the type described above, in particular polyether polyester polyols.
  • the binder composition comprises when it contains a
  • Polyisocyanate comprises at least one aromatic polyisocyanate and at least one polyol selected from the group comprising epoxidized vegetable oils and their reaction products with monofunctional alcohols, polybutadiene polyols, reaction products of vegetable oils,
  • polyester polyols based on hydrogenated tall oil especially castor oil, with ketone resins, polyester polyols based on hydrogenated tall oil, and polyester polyols based on dimer fatty acids or
  • Dimer fatty alcohols are based.
  • Such binder compositions are particularly hydrophobic, do not absorb moisture after curing and are stable to hydrolysis, which is advantageous.
  • An advantageous binder composition comprising at least one polyisocyanate and at least one polyol contains: - 3 to 40% by weight of at least one polyisocyanate,
  • At least one filler in particular a mineral filler, at least 20% by weight of the filler being iron-containing slag, and
  • binder composition based on 100% by weight of binder composition.
  • An advantageous binder composition comprising polyisocyanates and polyols is a three-component system.
  • a liquid component here comprises the polyisocyanate, a second liquid component the polyol and a solid component the filler.
  • the filler into the component comprising the polyisocyanate or into the component comprising the polyol.
  • the binder composition is two-component.
  • the binder composition comprises at least one polyisocyanate, at least one polyol and at least one cement.
  • Such a binder composition consists in particular of three components.
  • a first component contains the at least one
  • Polyisocyanate a second component contains the at least one polyol and a third component (powder component) contains the fillers and the cement.
  • the binder composition according to the invention also contains 0.1 to 5% by weight, based on the total weight of the binder composition, of electrically conductive powder or fibers, in particular carbon black, graphite, steel fibers or carbon fibers. This can increase the electrical conductivity of the material.
  • the binder composition is preferably free of carbon-based additives, such as, in particular, carbon black, graphite, carbon fibers or Carbon nanotubes, and free from metallic additives such as
  • metal powder or metal fibers for example metal powder or metal fibers.
  • the binder composition can optionally also contain one or more additives, in particular
  • anionic comb polymers with polyalkylene glycol side chains especially comb polymers with carboxylic acid groups and polyalkylene glycol groups (polycarboxylate ethers),
  • Crystallization nuclei such as fine or ultra-fine CSH, gypsum, CaCCb or Ca (OH) 2 particles, nitrites, nitrates, chlorides, sulfates,
  • organometallic compounds or amines in particular sec. Or tert. Amines,
  • Film-forming polymers as aqueous polymer dispersions or as redispersible polymer powders, in particular polymers with a maximum film formation temperature of below 25 ° C, such as homo- or copolymers of acrylic esters, copolymers of styrene and butadiene, copolymers of styrene with acrylic esters and homo- or Copolymers of vinyl acetate,
  • Air entraining agents defoamers, wetting agents, emulsifiers, dispersants, Dyes, non-reactive thinners, pigments, plasticizers, or preservatives.
  • the additive can be present in any suitable component.
  • the binder composition can be in the form of a one-component, two-component or multi-component composition.
  • one-component refers to a composition in which all components of the composition are present in the same container, which as such is storage-stable and which can be hardened with water.
  • a composition is referred to as “two-component” or “multi-component” in which the constituents of the composition are present in two or more different components.
  • at least those constituents of the composition which can react with one another are stored in separate containers or in separate compartments of a container and are only mixed with one another shortly before the composition is applied.
  • the binder composition is processed by mixing the binder composition with a suitable amount of water.
  • the binder composition is processed by mixing the binder composition with a suitable amount of water.
  • the mass ratio of water to hydraulic binder after mixing all components is in the range from 0.25 to 1.0, preferably 0.28 to 0.8, in particular 0.30 to 0.6.
  • the water is advantageously added to such binder compositions only shortly before processing.
  • the water is preferably already present in one or more of the components.
  • the water-containing components do not include any components that can react with the water under normal storage conditions.
  • Another object of the present invention is a method for producing materials with improved electrical conductivity at 20 ° C, characterized in that all components of a binder composition, comprising at least one binder and at least one mineral filler, are mixed and the mixture is allowed to harden wherein at least 20% by weight of the filler is ferrous slag, and wherein water is present in the mixing of binder compositions containing a mineral binder.
  • binder composition according to the invention as leveling mortar, screed or floor coating, if one according to the invention
  • Binder composition which comprises organic binders and to which no water is added, is mixed and applied in the following steps:
  • the material with improved electrical conductivity preferably has a specific electrical which is reduced by at least a factor of 1.5, more preferably at least 1.8, in particular at least 2.0
  • the electrical resistance is determined between the two opposing 40 x 40 mm surfaces of a 40 x 40 x 160 mm prism by applying a voltage of 100 mV and a frequency of 1 kHz at 20 ° C. The measurement of the specific electrical
  • Volume resistance is used for test specimens that have at least one
  • the curing of the binder composition takes place with the application of an electrical voltage to electrodes which are attached or embedded in the binder composition to be hardened. Since the slag increases the electrical conductivity of the material, applying voltage to the
  • Electrodes generate heat, which accelerates the curing reaction.
  • Another object of the present invention is a material with improved electrical conductivity at 20 ° C, obtainable by mixing all components of a binder composition comprising at least one binder and at least one mineral filler, and curing the mixture obtained, with at least 20% by weight of the mineral filler are ferrous slag.
  • Another object of the invention is the use of the material with improved electrical conductivity at 20.degree. C., as described above, for the production of sacrificial anodes, in particular in buildings.
  • the binder is preferred for use in the manufacture of sacrificial anodes a mineral binder, in particular a binder that is a geopolymer after curing.
  • Another object of the invention is the use of the material with improved electrical conductivity at 20 ° C, as described above, as mortar, repair mortar, leveling mortar, screed, grouting mortar, plaster, casting compound, coating, in particular floor coating, or
  • FIG. 1 shows: a schematic representation of exemplary cross-sections of slag particles with an irregular shape.
  • EOS-Sand is an electric furnace slag from Stahl Gerlafingen, Switzerland.
  • the material used had a bulk density of around 3.3 kg / l and an iron content, calculated as FeO, of around 19% by weight.
  • CS is NAstra ® iron silicate granules, a glassy copper slag, available from Sibelco, Germany, with a bulk density of about 3.7 kg / l and an iron content, calculated as FeO, of about 51% by weight.
  • HOS is a blast furnace slag from Hüttenwerke Krupp Mannesmann, Germany, available from Hermann Rauen GmbH & Co.,
  • the material used had a bulk density of 2.9 kg / l and an iron content, calculated as FeO, of around 3% by weight.
  • Raulit ® is a blast furnace slag from DK-Recycling und Roheisen GmbH, Germany, available under the brand name Raulit ® -Mineralbaustoff- mix from Hermann Rauen GmbH & Co., Germany.
  • the material used had a bulk density of about 2.9 kg / l and an iron content, calculated as FeO, of about 1% by weight.
  • HS is a slag sand from voestalpine AG, Austria.
  • the material used had a bulk density of about 2.9 kg / l and an iron content, calculated as FeO, of less than 1% by weight.
  • Sikadur ® -42 HE is a three-component grouting mortar based on epoxy resin, available from Sika Sau AG.
  • the electrical surface resistance of the test specimens was measured at regular time intervals. For this purpose, the resistance on one of the longitudinal surfaces of a 40 x 40 x 160 mm test piece was determined using the Resipod resistance meter, available from Proceq, Switzerland. It is a 4-point measuring device. The electrodes are arranged linearly at a distance of 50 mm. An electric current is applied to the outer electrodes and the potential difference between the two inner electrodes is measured. The current amplitude is automatically selected by the device in accordance with the electrical resistance of the sample, and lies
  • the volume resistivity of the 40 x 40 x 160 mm test pieces was determined using the EIS method.
  • stainless steel electrodes were placed at the ends (40 x 40 mm surfaces) of the test specimens, which completely covered the surfaces.
  • a sponge soaked with a saturated calcium hydroxide solution was clamped between the test surface and the electrode.
  • the volume resistance of the test specimens was then determined within about 15 seconds by applying an amplitude signal of 100 mV at a frequency of 1 kHz or 10 kHz to the two stainless steel electrodes.
  • test specimens measuring 40 x 40 x 160 mm were determined in accordance with DIN EN 196-1.
  • composition of the mortars is given in Table 1.
  • compositions of the mortars differ only in the
  • the workability of the mortars M1 to M4 was comparable.
  • the mortar was filled into steel molds measuring 40 x 40 x 160 mm and stored covered in the formwork for 24 hours at 20 ° C.
  • the test specimens were then removed from the formwork and placed at 57% rel. Humidity and 20 ° C or at 68% rel. Humidity and 20 ° C.
  • Table 2 shows the specific electrical surface resistance ROF of mortars M1 and M2 in kQ cm as a function of storage time and relative humidity (r.h.).
  • the sample age is the age of the test specimen in days.
  • the measured values are mean values from measurements on three test specimens.
  • Table 3 shows the specific electrical volume resistance RDU of the mortars M1 to M4 when the test specimens are stored at 57% rel. humidity
  • Mortar M2, M3 and M4 is reduced compared to reference mortar M1 (resistance M1 / resistance M2, M3 or M4)
  • Table 4 shows the compressive strength of the test specimens in MPa after storage at 21 ° C. and 68% relative humidity.
  • Sikadur ® -42 HE component A (containing the epoxy resin) was mixed well with the associated component B (containing the hardener) in a weight ratio of 3: 1 and then a solid component with the composition given in Table 5 was added and mixed well.
  • the weight ratio of component A to component B to solid component was 3: 1: 34.
  • Table 5 shows the composition of the solid component.
  • Table 6 shows the strength, the type of sand used and the specific volume resistance (RDU) of the mortars M5 to M10 after the test specimens have been stored for 7 days at 20 ° C. and 57% relative humidity.
  • Test specimens with a diameter of 30 mm and a height of 2 mm were produced by casting in appropriate molds and allowed to cure for 7 days at 20 ° C.
  • the thermal conductivity of the M11 grouting mortar was 2.06 W / (m-K).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Architecture (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

La présente invention concerne l'utilisation d'une composition de liant pour la fabrication de matériaux à conductivité électrique améliorée, cette composition de liant contenant des scories ferreuses.
EP20728050.4A 2019-05-28 2020-05-28 Mortier conducteur Pending EP3976548A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22182425.3A EP4101824A1 (fr) 2019-05-28 2020-05-28 Mortier conducteur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19176999.1A EP3744701A1 (fr) 2019-05-28 2019-05-28 Mortier conducteur
PCT/EP2020/064809 WO2020239893A1 (fr) 2019-05-28 2020-05-28 Mortier conducteur

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP22182425.3A Division EP4101824A1 (fr) 2019-05-28 2020-05-28 Mortier conducteur

Publications (1)

Publication Number Publication Date
EP3976548A1 true EP3976548A1 (fr) 2022-04-06

Family

ID=66668829

Family Applications (3)

Application Number Title Priority Date Filing Date
EP19176999.1A Withdrawn EP3744701A1 (fr) 2019-05-28 2019-05-28 Mortier conducteur
EP22182425.3A Pending EP4101824A1 (fr) 2019-05-28 2020-05-28 Mortier conducteur
EP20728050.4A Pending EP3976548A1 (fr) 2019-05-28 2020-05-28 Mortier conducteur

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP19176999.1A Withdrawn EP3744701A1 (fr) 2019-05-28 2019-05-28 Mortier conducteur
EP22182425.3A Pending EP4101824A1 (fr) 2019-05-28 2020-05-28 Mortier conducteur

Country Status (4)

Country Link
US (1) US12304862B2 (fr)
EP (3) EP3744701A1 (fr)
CN (1) CN113631526A (fr)
WO (1) WO2020239893A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114671633B (zh) * 2022-05-05 2022-12-23 华北理工大学 一种全固废无熟料胶凝材料、导电砂浆及其制备方法
IT202200014143A1 (it) * 2022-07-04 2024-01-04 Alisea S R L Soc Benefit Rivestimento a base di legante geopolimerico e metodo per ottenere un rivestimento a base di legante geopolimerico
CN118405881B (zh) * 2024-07-01 2024-09-24 河南人邦科技股份有限公司 一种超高性能地聚合物及其制备方法与应用

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166518A (en) * 1960-12-29 1965-01-19 Schlumberger Well Surv Corp Electrically conductive concrete
GB1445611A (en) 1973-02-07 1976-08-11 Marconi Co Ltd Electrically conducting arrangements
DE3733564C1 (en) * 1987-10-03 1988-12-01 Bt Baustoff & Transp Gmbh & Co Component of high compressive strength made of lime/silica compositions
JP2624274B2 (ja) * 1987-12-04 1997-06-25 電気化学工業株式会社 導電性水硬性組成物
WO1998021160A1 (fr) * 1996-11-12 1998-05-22 Sicowa Verfahrenstechnik Für Baustoffe Gmbh & Co. Kg Element constitutif, procede permettant de le produire et son utilisation
DE19915093C2 (de) * 1999-04-01 2002-08-14 Crc Chemical Res Co Ltd Verfahren zum Herstellen eines säurefesten und elektrisch ableitfähigen Baustoffbelags
KR20030028859A (ko) * 2001-10-04 2003-04-11 주식회사 인트켐 전자파 흡수용 시멘트 조성물
US7141112B2 (en) 2003-01-31 2006-11-28 Douglas C Comrie Cementitious materials including stainless steel slag and geopolymers
CN100513347C (zh) * 2007-06-25 2009-07-15 马鞍山钢铁股份有限公司 一种导电水泥及其制备方法
CN101250034B (zh) * 2008-03-31 2011-09-14 芮志平 一种地质聚合物土壤固结注浆材料
CA2736772C (fr) * 2008-08-11 2019-10-08 Wolfgang Schwarz Liant hydraulique et matrices de liant produites a l'aide dudit liant
WO2010059169A1 (fr) * 2008-11-24 2010-05-27 Board Of Regents Of University Of Nebraska Béton conducteur pour chauffage et sécurité électrique
CN101456708B (zh) * 2009-01-06 2011-02-23 中建商品混凝土有限公司 一种轻集料及其制备方法
CN101525224B (zh) * 2009-03-27 2012-07-04 重庆大学 高铁粉煤灰水泥基复合建筑吸波材料及其制备方法
CN101698576B (zh) * 2009-10-22 2012-11-21 厦门市建筑科学研究院集团股份有限公司 钢渣-偏高岭土地聚合胶凝材料的制备方法
CN101712546B (zh) 2009-10-31 2012-03-07 浙江大学宁波理工学院 地聚合物灌浆材料
FR2955104B1 (fr) * 2010-01-13 2014-08-08 Kerneos Materiau pour isolation thermique et son procede de fabrication
IT1403633B1 (it) 2011-01-17 2013-10-31 Cugini Spa Miscela legante per la realizzazione di massetti ad elevata conducibilita' termica
CN103224369A (zh) 2013-04-09 2013-07-31 四川省交通运输厅公路规划勘察设计研究院 矿渣集料制备的防辐射混凝土及其生产方法
ES2777216T3 (es) * 2013-04-10 2020-08-04 Sika Tech Ag Composición para su uso como lechada de rellenado de dos componentes que comprende silicato extraído
CN103469212B (zh) * 2013-08-05 2015-11-25 青岛双瑞海洋环境工程股份有限公司 用于钢筋混凝土阴极保护系统的阳极导电填充物
DE102014017049A1 (de) * 2014-11-13 2016-05-19 Ce-Sys Engineering Gmbh Baustoff zur Abschirmung von elektromagnetischen Wellen durch Absorption, Verfahren zu seiner Herstellung sowie dessen Verwendung
US10930405B2 (en) * 2015-03-03 2021-02-23 The King Abdulaziz City For Science And Technology Mixture for anti-radiation pozzolon-polymeric cementitious material
ES2570478B1 (es) * 2015-05-22 2017-02-23 Arraela, S.L. Preparado en masa para la fabricación de hormigones técnicos para blindajes contra radiación y método para la obtención de dicho preparado
CN105621991A (zh) * 2016-01-08 2016-06-01 中电建路桥集团有限公司 基于复合功能型外加剂的海工混凝土
US9802865B1 (en) 2016-09-13 2017-10-31 Nano And Advanced Materials Institute Limited Nano-modified alkali-activated cementitious materials for rapid repair
EP3339343A1 (fr) 2016-12-23 2018-06-27 Sika Technology Ag Composition de polyuréthane bi-composants
EP3415544A1 (fr) 2017-06-12 2018-12-19 Sika Technology Ag Composition de polyuréthane bi-composants
CN109678414A (zh) * 2018-08-31 2019-04-26 南京优邦加能新材料科技有限公司 一种埋入式复合牺牲阳极多孔砂浆及其制备方法

Also Published As

Publication number Publication date
WO2020239893A1 (fr) 2020-12-03
US12304862B2 (en) 2025-05-20
CN113631526A (zh) 2021-11-09
EP3744701A1 (fr) 2020-12-02
US20220212991A1 (en) 2022-07-07
EP4101824A1 (fr) 2022-12-14

Similar Documents

Publication Publication Date Title
KR101512962B1 (ko) 단면 복구용 모르타르 조성물 및 이를 이용한 단면 복구공법
EP4317116B1 (fr) Bétons polymères et mortiers à base de polyuréthane
KR0182591B1 (ko) 규산질 회분을 포함하는 고내구성의 시멘트 제품
KR101312562B1 (ko) 바텀애시를 포함하는 콘크리트용 결합재 조성물
EP2190798A1 (fr) Composition à base de matières premières phosphatées et procédé de production de celle-ci
EP3976548A1 (fr) Mortier conducteur
WO2009144141A1 (fr) Mélange, en particulier mélange pour matériaux de construction contenant du sable de fonderie
Kumar et al. Impact resistance and strength development of fly ash based self-compacting concrete
EP3696153A1 (fr) Mélange cimentaire permettant de produire un béton léger à ultra haute résistance
CN114804807A (zh) 一种全固废软基淤泥固化粉料及其制备方法
EP4251584A1 (fr) Bétons polymères à base de polyuréthane et mortiers de jointoiement à densité contrôlée
EP4003928A1 (fr) Polymères inorganiques et leur utilisation dans des composites
EP3538499B1 (fr) Accélérateur de durcissement
DE102013007937A1 (de) Mineralisches, hydraulisches Bindemittel sowie mineralischer, hydraulischer Trockenmörtel, Frischbeton und Festbeton enthaltend das Bindemittel
JP2011057514A (ja) コンクリートパネル成形体及びその製造方法
EP4149902A1 (fr) Clinker de ciment portland finement broyé dans un système de mortier multicomposants à base de ciment, destiné à être utilisé comme système de scellement chimique inorganique
EP0540552A1 (fr) Procede de production de liant riche en hydrate de chaux pour betons ou pour mortiers et utilisation du liant.
KR102500855B1 (ko) 매립석탄재 기반 긴급복구용 유동성 채움재
EP4342867A1 (fr) Procédés de régulation du retrait de compositions cimentaires et coulis cimentaires présentant un retrait contrôlé
EP4417591A1 (fr) Composition pour la préparation de béton, son procédé de préparation et son utilisation, et béton comprenant cette composition
EP4279467A1 (fr) Production d'un géopolymère à l'aide de laitier d'aciérie
WO2025237531A1 (fr) Mélange de composants principaux et son procédé de production
EP4650332A1 (fr) Procédé de fabrication d'agglomérats de matériaux de construction de substitution
DE102022204807A1 (de) Herstellung eines Geopolymers unter Verwendung von Stahlwerksschlacke
Patil et al. Effects of Copper Slag and Stone Dust in Concrete

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220103

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20230222