[go: up one dir, main page]

WO1999001398A1 - Procede d'etancheification d'elements de construction par injection de solutions de silicate de sodium - Google Patents

Procede d'etancheification d'elements de construction par injection de solutions de silicate de sodium Download PDF

Info

Publication number
WO1999001398A1
WO1999001398A1 PCT/EP1998/003830 EP9803830W WO9901398A1 WO 1999001398 A1 WO1999001398 A1 WO 1999001398A1 EP 9803830 W EP9803830 W EP 9803830W WO 9901398 A1 WO9901398 A1 WO 9901398A1
Authority
WO
WIPO (PCT)
Prior art keywords
packer
water glass
solution
range
gel
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.)
Ceased
Application number
PCT/EP1998/003830
Other languages
German (de)
English (en)
Inventor
Joachim Sass
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of WO1999001398A1 publication Critical patent/WO1999001398A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
    • C04B12/04—Alkali metal or ammonium silicate cements ; Alkyl silicate cements; Silica sol cements; Soluble silicate 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
    • C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
    • C04B41/5089—Silica sols, alkyl, ammonium or alkali metal silicate 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/72—Repairing or restoring existing buildings or building materials

Definitions

  • the invention relates to a method for sealing components such as cracked masonry or concrete, wherein the cracks are filled with a gel-forming water glass / hardener solution.
  • the invention has for its object to provide an improved method for the repair of cracked components, wherein a gel-forming liquid is pressed into the cracks.
  • Injection solutions are to be used which form hydrogels after an adjustable hardening time in the range of a few minutes. This condition makes it necessary to find suitable combinations of gelling agents and hardening substances.
  • the gels can be present as elastic soft gels or as hard gels with higher solids content.
  • the funds should be able to be used without any health risk and be in the ground behave as environmentally neutral as possible. For example, they should have the lowest possible C SB value and should not contain any aggressive substances, such as, for example, silicic acid.
  • This object is achieved by a method for sealing components, for example cracked masonry or concrete, whereby at least one hole is made in the component that cuts the crack or cracks, and a packer is introduced into the individual holes so that a packer is inserted in front of the packer Cavity remains, which has a connection to the crack or the cracks, and from the packer injected a gel-forming liquid into the cavity in front of the packer and into the crack or the cracks, characterized in that a water glass solution is used as the gel-forming liquid, which in the Packer itself, before feeding into the packer or when leaving the packer, is mixed with esters or with an aqueous hardener solution which contains one or more of the following components: alkali metal aluminate, salts of alkaline earth metal cations, acidic water-soluble salts, glyoxal, organic acids or their compounds that are able to bind hydroxide ions.
  • This gel-forming liquid is also referred to below as an “injection solution”.
  • the packer preferably consists of two tubular sleeves inserted into one another (FIG. 1).
  • the inner tube sleeve (19) has an external thread for a flat nut (17) and an internal thread for receiving a compression nipple (16) a valve, for example a ball valve.
  • this packer has an outer collar (21) on its inner tube as a stop for a piece of hose (20).
  • the outer tube sleeve (18) stands on this piece of hose and is connected to the inner tube (19) at the upper end by a flat nut (17).
  • FIG. 1 shows a conceivable application example of the renovation method according to the invention: concrete or masonry (15) is to be renovated here, which lies or rests on one side against the existing floor (12). The other side borders on air.
  • the crack (14) is blocked on the air side, for example with a quick-setting adhesive mortar (10). This prevents the gel-forming water glass / hardening solution from escaping into the air space.
  • the solution for injection can penetrate into the soil, which increases the sealing effect (13).
  • the solution for injection is pressed until a certain pressure to be specified builds up.
  • the pressure should be adapted to the strength of the component.
  • the end of the injection is indicated by an increase in pressure.
  • the packer has a single compression nipple. Accordingly, the water glass and hardener solution must be pressed together before being pressed into the nipple be mixed.
  • the injection medium is pressed into the partially closed blind hole / crack cavity system via the nipple. Blind hole, crack and in some areas the adjacent soil material are filled.
  • the packer preferably remains in the blind hole after the injection or is cut off with the cut-off wheel. The remaining hole and the rest of the packer are cleaned with mortar.
  • a packer that has two separate supply lines for the water glass and the hardener solution.
  • a packer is shown in Figure 2.
  • the water glass and hardener solutions only mix when they exit the packer into the borehole.
  • Mixing can be improved by a suitably designed mixing nozzle at the outlet of the packer.
  • a disc (22) with two bores is sufficient, from which the two solutions emerge into the boring channel (11) and mix in the process.
  • Sodium and / or potassium water glass solutions can be used as water glass solutions.
  • Sodium water glass solutions are preferred for cost reasons. These also have a more favorable viscosity behavior than potassium water glass solutions.
  • the water glass solutions which can be used for the process according to the invention preferably have a solids content in the range from 2 to 40% by weight, in particular from 5 to 25% by weight. Solids contents in the upper range are particularly preferred if a cavern has already formed behind the crack in the ground by washing out, which is to be filled with the gel resulting from the solution for injection. However, the solids content is limited by the viscosity of the solution and the gel formation that may take place too quickly. Solutions with a lower solids content are preferably used when the solution is to penetrate looser soil behind the crack.
  • Modules at the lower limit of this range and below have the disadvantage that they describe very strongly alkaline water glasses. In the use according to the invention, this can result in a strong alkali entry into the soil and requires the use of larger amounts of hardening substances.
  • Modules in the upper area describe silicon-rich water glasses that are less strongly alkaline and that can be made to gel with less hardener additives. With increasing module, however, the viscosity increases with the same solids content of the solution, so that pumping around these water glass solutions becomes increasingly difficult. Water glass solutions with modules in the range from about 2.7 to 4.2 represent a good compromise between the different requirements and are therefore preferred.
  • a large number of hardener substances which convert an alkali metal silicate solution into a hydrogel are known. Their effect can consist in the fact that hardener components together with silicate ions form sparingly soluble precipitates which convert the water glass solution into a gel. Examples of these are alkali metal aluminate solutions, for example sodium aluminate solutions, which form an aluminosilicate gel when mixed with water glass solution. Alkaline earth metal cations react in a similar way, in which the precipitation of poorly soluble alkaline earth metal silicates causes gel formation cause. On the other hand, the gel formation mechanism can also be based on the fact that the hardening substances bind hydroxide ions of the alkaline water glass solution.
  • Water-soluble salts that still contain acidic hydrogen ions act in this way.
  • acidic water-soluble salts which can be used as hardeners in the sense of the invention are hydrogen phosphates, dihydrogen phosphates, hydrogen sulfates and / or hydrogen carbonates. Hydrogen carbonates from the last group are particularly suitable.
  • organic acids or their compounds which are capable of binding hydroxide ions can also be used as hardening substances which lead to the formation of silica gels from water glass solutions by binding hydroxide ions.
  • Substances of this type come into question if the resulting C SB content of the injection solution is not considered to be problematic for the soil that may be present.
  • examples of such compounds are carboxylic acid esters or carbonic acid esters, from which the free acid, which in turn binds hydroxide ions, is formed by hydrolysis in the alkaline water glass solution.
  • esters of lower alcohols in particular ethyl esters, are preferably used.
  • esters of polyhydric alcohols with short-chain carboxylic acids can be used, for example acetic acid esters of glycol or glycerin.
  • Glycerol triacetate is a preferred example.
  • Glyoxal which due to its low molecular weight leads to a particularly low COD load, can also be considered as the preferred hardening substance. Its effect is based on the fact that after a certain time it is rearranged in the alkaline water glass solution to hydroxyacetic acid, which in turn binds hydroxide ions.
  • Hydroxyacetic acid is a naturally occurring substance whose biodegradation poses no problems. Mi Mixtures of different organic hardening substances, for example a mixture of glycerol triacetate and propylene carbonate, can lead to particularly favorable gel formation times.
  • an alkali metal aluminate solution is used as the hardening solution, its concentration and amount are preferably chosen such that the SiO 2: Al 2 O 3 molar ratio in the mixed water glass / hardening solution is in the range from about 5 to about 100.
  • the concentrations of the water glass and hardener solution and their mixing ratio are preferably adjusted so that the ratio of the solids content of the water glass solution to the active substance content of the hardener solution is in the range from about 100: 2 to 100: 100 and that the total solids content of the mixed water glass and hardener solution is in the range between about 2 and about 50% by weight.
  • Weight ratios of the solids content of the water glass solution to the active substance content of the hardener solution in the range from about 100: 2 to about 100: 50 are preferred for hard gels, and weight ratios of about 100: 10 to about 100: 100 are preferred for soft gels.
  • the active substance content of the hardener solution is understood to mean the solids content.
  • the concentrations of the respective solutions are chosen such that the water glass / hardener solution after mixing has an SiO 2 concentration in the range from about 1 to about 30% by weight. SiO 2 contents of approximately 5 to approximately 10% by weight are preferred for soft gels and approximately 20 to approximately 30% by weight for hard gels. At lower concentrations, gel formation is no longer guaranteed; at higher concentrations, processing becomes increasingly difficult due to the high viscosity and possibly very rapid gel formation. Concentrations at the lower end of the range are advantageously chosen, however, if the cracks are narrow and / or the injection solution is to penetrate less porous soil. Concentrations in the upper range are preferred when the cracks are about 1 to about 5 mm wide. With smaller crack widths, thinner injection solutions are preferred.
  • the viscosity of the mixed water glass / hardener solution at the processing temperature should be in a range such that the solution can penetrate well into the cracks and, if necessary, underneath the soil or cavities. Viscosities in the range from about 1 to about 300 mPa.s (determinable according to Brookfield) are favorable. Viscosities less than 200 mPa-s, for example in the range from 2 to 100 mPa-s, are particularly favorable. The viscosity depends on the concentration and the modulus of the Water glass solution. It is known that high modules and high concentrations cause high viscosities.
  • the control of the supply of the water glass and the hardener solution in the packer is particularly easy to regulate if the concentrations of the two solutions are set such that the same volume parts of the two solutions must be mixed with one another.
  • other volume ratios are also possible.
  • the technically realistic range of volume ratios is between approximately 10: 1 and approximately 1: 1.
  • the water glass and hardener solutions can be mixed first and then fed into the packer via a single hose line. However, it is difficult, on the one hand, to avoid gel formation in the hose line and, on the other hand, to achieve rapid gel formation after injection of the solution into the damaged area.
  • the water glass / hardener solutions to be used according to the invention have the advantage of being largely environmentally neutral even in the unreacted state.
  • the resulting gels are elastic soft or hard gels.
  • Solid gels (hard gels) are particularly resistant to deformation due to drying out and show less shrinkage. They are largely insensitive to changes in building moisture.
  • the systems of water glass and hardener solution according to the invention have the advantage that the time interval until gel formation and thus the processing time can be set in a reproducible manner. After the gel formation time has elapsed, gel formation takes place reliably and quickly. This ensures high processing reliability with a short cycle time. It is not necessary to heat the solutions for injection. The gels cure reliably at the temperatures commonly encountered.
  • the water glass and hardener solutions were quickly mixed together in a beaker and the time until gel formation (solidification of the solution) was determined.
  • Glucopon R 215 CS Cg-C ⁇ o-alkyl-l, 5-glucoside (commercial product from Henkel KGaA) as a 20% solution
  • Triton ⁇ - BG 10 sugar-fatty alcohol acetal (commercial product from Union Carbide) as 17.5% Solution
  • the gel formation experiments were carried out at 23 ° C.
  • the example shows a water glass / hardener system that can be injected in a volume ratio of 8: 1.
  • the water glass and hardener solution of the composition mentioned were mixed rapidly in a volume ratio of 8: 1 (the time until gel formation is 150 seconds). 85 g of the mixed solution were immediately mixed intensively with 300 g of F 32 quartz sand, so that all the air could escape. A solid body was obtained which showed very little shrinkage. The example shows that the formation of a stable solid body can be expected when the solution for injection enters the ground. Reference list

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

L'invention concerne un procédé d'assainissement d'éléments de construction, par exemple d'un ouvrage de maçonnerie ou de béton fissurés. On réalise dans l'ouvrage de maçonnerie ou le béton au moins un trou qui coupe la ou les fentes. On introduit un chargeur en veillant à laisser devant ce chargeur un espace vide présentant une intersection avec la ou les fentes. On injecte dans ces fentes un liquide formant un gel, contenu dans le chargeur. Ce procédé est caractérisé en ce que l'on utilise, comme liquide formant un gel, une solution de silicate de sodium qui est mélangée avant son introduction dans le chargeur, dans le chargeur lui-même ou à sa sortie du chargeur, avec des esters ou une solution durcissante aqueuse contenant au moins un des composants suivants: aluminate de métaux alcalins, sels de cations de métaux alcalino-terreux, sels acides, glyoxal, acides organiques ou leurs composés qui ont la capacité de lier les ions d'hydroxyde.
PCT/EP1998/003830 1997-07-02 1998-06-23 Procede d'etancheification d'elements de construction par injection de solutions de silicate de sodium Ceased WO1999001398A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997128088 DE19728088A1 (de) 1997-07-02 1997-07-02 Verfahren zur Abdichtung von Bauteilen durch Injektion von gelbildenden Wasserglaslösungen
DE19728088.9 1997-07-02

Publications (1)

Publication Number Publication Date
WO1999001398A1 true WO1999001398A1 (fr) 1999-01-14

Family

ID=7834322

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/003830 Ceased WO1999001398A1 (fr) 1997-07-02 1998-06-23 Procede d'etancheification d'elements de construction par injection de solutions de silicate de sodium

Country Status (2)

Country Link
DE (1) DE19728088A1 (fr)
WO (1) WO1999001398A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7563316B2 (en) 2003-08-01 2009-07-21 Bene-Fit Gmbh Method for producing a colored sand composition, and composition thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10031992A1 (de) 2000-06-30 2002-01-24 Henkel Kgaa Schmelzklebstoffe zur Abdichtung von Gestein oder Baumaterial
DE102014004087B3 (de) * 2014-03-21 2015-06-18 Minova International Ltd. Selbstbohrende Injektionslanze und Verfahren zur Erdreichstabilisierung unter Verwendung derselben

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3600760A1 (de) * 1985-06-29 1987-01-08 Ruhrkohle Ag Feuerfeste masse
DE3538791A1 (de) * 1985-10-31 1987-05-07 Webac Chemie Gmbh Verfahren zum haerten von wasserglasloesungen und hierzu geeignetes haertungssystem
US5017233A (en) * 1985-08-01 1991-05-21 Soltanche Method of rendering soils impervious and products for carrying out the method
US5431728A (en) * 1992-11-12 1995-07-11 Rhone-Poulenc Chimie Inorganic injectable slurries and consolidation of ground formations/construction materials therewith
EP0760353A1 (fr) * 1995-08-30 1997-03-05 Rudolf Schanze Composition à base de verre soluble pour l'étanchéité et procédé pour durcir de la masse à base de verre soluble
JPH1017865A (ja) * 1996-07-02 1998-01-20 Mitsui Petrochem Ind Ltd 地盤注入固結薬剤と地盤改良方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962960C (de) * 1953-03-11 1957-05-02 Deutsche Erdoel Ag Verfahren zur Verfestigung und Abdichtung von Bodenformationen und Mauerwerken
DE3335487C2 (de) * 1983-09-30 1986-10-16 Johann 6054 Dietzenbach Gerstorfer Vorrichtung zur Hochdruckinjektion in Mauerwerksbohrungen
DE8421167U1 (de) * 1984-07-14 1989-10-26 Polyplan Werkzeuge Hans-Jürgen Borowski GmbH, 2000 Hamburg Vorrichtung zum Abdichten von Rissen und dergl. in Bauteilen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3600760A1 (de) * 1985-06-29 1987-01-08 Ruhrkohle Ag Feuerfeste masse
US5017233A (en) * 1985-08-01 1991-05-21 Soltanche Method of rendering soils impervious and products for carrying out the method
DE3538791A1 (de) * 1985-10-31 1987-05-07 Webac Chemie Gmbh Verfahren zum haerten von wasserglasloesungen und hierzu geeignetes haertungssystem
US5431728A (en) * 1992-11-12 1995-07-11 Rhone-Poulenc Chimie Inorganic injectable slurries and consolidation of ground formations/construction materials therewith
EP0760353A1 (fr) * 1995-08-30 1997-03-05 Rudolf Schanze Composition à base de verre soluble pour l'étanchéité et procédé pour durcir de la masse à base de verre soluble
JPH1017865A (ja) * 1996-07-02 1998-01-20 Mitsui Petrochem Ind Ltd 地盤注入固結薬剤と地盤改良方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 9813, Derwent World Patents Index; Class A26, AN 98-141244, XP002084651 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7563316B2 (en) 2003-08-01 2009-07-21 Bene-Fit Gmbh Method for producing a colored sand composition, and composition thereof

Also Published As

Publication number Publication date
DE19728088A1 (de) 1999-02-11

Similar Documents

Publication Publication Date Title
DE1291305B (de) Vorspuelfluessigkeit und Verfahren zum Entfernen des Bohrschlamms aus einem verrohrten Bohrloch
EP0565987B1 (fr) Corps moulé en béton avec une bonne résistance aux acides
EP2125669B1 (fr) Procédé d'assainissement de zones endommagées dans des conduites ou des canalisations
AT521434B1 (de) Fahrbahnbelag
EP0760353A1 (fr) Composition à base de verre soluble pour l'étanchéité et procédé pour durcir de la masse à base de verre soluble
DE60030482T2 (de) Bodenverbesserungsmittel enthaltend bodenhärter und bodenverbesserer, dessen verwendung sowie eine methode zur bodenverbesserung
WO1999001398A1 (fr) Procede d'etancheification d'elements de construction par injection de solutions de silicate de sodium
DE10044551B4 (de) Mittel zum Abdichten von wasserführenden Anlagen und Systemen sowie Verfahren zur Anwendung des Mittels
WO2008098843A2 (fr) Mélange de substances pouvant être utilisé notamment en tant que granulat dans du béton
DE19604525C2 (de) Hochliegende Abdichtungssohle mit Baugrubenumschließung
AT517528B1 (de) Verfahren zur Errichtung eines Fahrbahnbelags
EP0846910A1 (fr) Procédé de restauration de canalisations enterrées conduisant des liquides par injection de solutions de verre soluble gélifiables
DE901271C (de) Verfahren zum Verbessern von Zementschlaemmen
DD212763A5 (de) Verfahren zum verfestigen und wasserdichtmachen von bauwerken
DE102019130907A1 (de) Fahrbahnbelag
DE3703762C2 (fr)
EP2810925A1 (fr) Compression avec du CO2, accélération du durcissement de ciment avec du CO2 comme accélérateur
DE2919106A1 (de) Verfahren zur durchfuehrung von injektagen
AT244216B (de) Verfahren zur Aufbereitung von Bentonit
DE102016104131B4 (de) Verwendung einer Zusammensetzung zur Verringerung der Durchlässigkeit oder zur Abdichtung von Böden, Fels oder Bauwerken gegenüber einer Durchdringung durch Fluide oder Gase
DE4325090C1 (de) Hydraulisch abbindendes Injektionsmaterial für ringförmige Spalträume großer Längen
EP3351684B1 (fr) Procédé de production d'un revêtement de chaussée
DE10327514B3 (de) Verfahren zur verfestigenden Behandlung von mineralischen anorganischen Baustoffen
AT361426B (de) Verfahren zum verfestigen und abdichten von geologischen und geschuetteten gesteins- und erdformationen
DE1966479A1 (de) Verfahren zum bau von ankern oder verstaerkten pfaehlen im boden

Legal Events

Date Code Title Description
AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase