NL2023452B1 - Inductive Bituminous Waterproofing Membrane - Google Patents
Inductive Bituminous Waterproofing Membrane Download PDFInfo
- Publication number
- NL2023452B1 NL2023452B1 NL2023452A NL2023452A NL2023452B1 NL 2023452 B1 NL2023452 B1 NL 2023452B1 NL 2023452 A NL2023452 A NL 2023452A NL 2023452 A NL2023452 A NL 2023452A NL 2023452 B1 NL2023452 B1 NL 2023452B1
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- Netherlands
- Prior art keywords
- layer
- waterproofing
- road surface
- surface structure
- induction
- Prior art date
Links
- 238000004078 waterproofing Methods 0.000 title claims abstract description 82
- 230000001939 inductive effect Effects 0.000 title claims abstract description 33
- 239000012528 membrane Substances 0.000 title claims description 26
- 238000000034 method Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 47
- 230000005674 electromagnetic induction Effects 0.000 claims description 25
- 230000006698 induction Effects 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 22
- 239000010426 asphalt Substances 0.000 claims description 18
- 230000002787 reinforcement Effects 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- -1 polyethylene Polymers 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229920002943 EPDM rubber Polymers 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 229920002681 hypalon Polymers 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000003208 petroleum Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 229920001059 synthetic polymer Polymers 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 210000002268 wool Anatomy 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 22
- 239000002344 surface layer Substances 0.000 claims 3
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000002923 metal particle Substances 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 239000000565 sealant Substances 0.000 claims 1
- 229920001971 elastomer Polymers 0.000 description 18
- 239000005060 rubber Substances 0.000 description 12
- 230000005672 electromagnetic field Effects 0.000 description 8
- 239000000806 elastomer Substances 0.000 description 6
- 239000005062 Polybutadiene Substances 0.000 description 5
- 229920002857 polybutadiene Polymers 0.000 description 5
- 229920000914 Metallic fiber Polymers 0.000 description 4
- 239000013528 metallic particle Substances 0.000 description 4
- 229920002379 silicone rubber Polymers 0.000 description 4
- 229920006311 Urethane elastomer Polymers 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 125000001841 imino group Chemical group [H]N=* 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- 239000004944 Liquid Silicone Rubber Substances 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229920005557 bromobutyl Polymers 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical class C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229920005556 chlorobutyl Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229920003244 diene elastomer Polymers 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229920006168 hydrated nitrile rubber Polymers 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- GKTNLYAAZKKMTQ-UHFFFAOYSA-N n-[bis(dimethylamino)phosphinimyl]-n-methylmethanamine Chemical compound CN(C)P(=N)(N(C)C)N(C)C GKTNLYAAZKKMTQ-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 229920006132 styrene block copolymer Polymers 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
- E01C11/26—Permanently installed heating or blowing devices ; Mounting thereof
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/187—Repairing bituminous covers, e.g. regeneration of the covering material in situ, application of a new bituminous topping
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention is in the field of an inductive bituminous waterproofing, a road structure comprising said waterproofing, a method of applying a sheet of waterproofing to a surface, removing the sheet of waterproofing from said surface, repairing said waterproofing, wherein the surface is selected from a multilayer civil engineering system, such as an asphalt concrete surfacing layer on orthotropic steel deck bridge, a roofr a pavement, such as an asphaltic pavement, and combinations thereof.
Description
Inductive Bituminous Waterproofing Membrane
FIELD OF THE INVENTION The present invention is in the field of an inductive bituminous waterproofing, a road structure comprising said waterproofing, a method of applying a sheet of waterproofing to a surface, removing the sheet of waterprcofing from said surface, repairing said waterproofing, wherein the surface is selected from a multilayer civil engineering system, such as an asphalt concrete surfacing layer on orthotropic steel deck bridge, a roof, a pavement, such as an asphaltic pavement, and combinations thereof.
BACKGROUND OF THE INVENTION Waterproofing relates to making an object or structure waterproof or water-resistant so that it remains relatively unaffected by water and that it resists ingress of water typically under specified conditions for a specific case. Waterproof typically refers tc a lack of penetration of water through said waterproofing, possibly under pressure. Permeation of water vapor through a waterproofing is preferably limited or prevented. Items may also be waterproofed by applying water- repellent coatings. In construction, a building or structure is waterproofed with the use of so-called membranes or coatings to protect it and to preserve it’s structural integrity.
A bituminous waterproofing is often used in road structures. A waterproofing is typically applied on a road structure by heating with a gas burner or the like. Waterproofing, which are often referred to as waterproofing membranes, typically consist of thermoplastic, rubber, or coated-fabric materials. The materials are used in a system to which the waterproofing is applied to prevent the ingress of water, such as into foundations, roofs, walls, basements, buildings, and steel deck bridge structures when properly installed. The most common type of sheet based waterproofing is a bituminous waterproofing membrane. This type of waterproofing is typically adhered to a substrate surface using blowtorches. The waterproofing comprises a hot polymer modified bituminous binder functioning as adhesive. An important requirement for the application of a waterproofing is in addition to a waterproofing capacity it also 40 provides sufficient bonding or adhering to the surrounding materials. Earlier investigations have shown that the bonding strength of waterproofing layers to the surrounding materials has a strong influence on the structural response thereof.
A disadvantage of existing waterproofings in road structures is that it is difficult to apply such waterproofings, and even more difficult to maintain and remove such waterproofings.
The present invention therefore relates to an improved waterproofing and methods of handling this waterproofing, which solves one or more of the above problems and drawbacks of the prior art, providing reliable results, without jeopardizing functionality and advantages.
SUMMARY OF THE INVENTION It is an object of the invention to overcome one or more limitations of waterproofings of the prior art and methods of handling these waterproofings and at the very least to provide an alternative thereto. Thereto inductive agents, such as metallic fibres or other metallic particles, are incorporated into the modified and non-inductive bituminous binder, which may be coated on the outer-surfaces of a waterproofing sheet, which is also referred to as membrane, or waterproofing membrane. Such a waterproofing may typically have a thickness of <10 cm, such as 1-5 cm. When for instance an induction heating apparatus or a microwave apparatus generates a typically alternating electromagnetic field heat is generated thereby in the inductive agents of the waterproofing. The electromagnetic field may be applied by a source using 0.1-10 kV of power, preferably 0.2- okV, such as 0.55 kV supplied power, and using an alternating electromagnetic field with a freguency of 10-300 kHz, preferably 20-200 kHz, such as of 64.5 kHz. Thereby adhesive characteristics of the waterproofing with its surrounding surface are activated. In addition the waterproofing is found to heal itself and to repair debonding damage between the waterproofing and surrounding substrate surface and hence improve the structural integrity of e.g. a road structure and improve the structures service life. Also, when the inductive waterproofing is applied at the surface of a typically non- inductive top layer, the waterproofing can be attached and detached using the induction heating apparatus. The method provides the opportunity of contactless heating of a 40 waterproofing at various depths mostly independently of the inductive characteristics of surrounding materials/layers.
The present waterproofing may have a multilayer structure, comprising a waterproof material, typically a thermoplastic or coated-fabric binder, that is mixed with an amount of inductive agents, such as metallic fibres, metallic particles, or materials which are able to generate heat when they are subjected to an alternating electromagnetic field or microwave radiation. For instance, bitumen may be for making the inductive waterproofing membrane. The present invention provides use of electromagnetic induction or microwave radiation techniques to melt the surface of the inductive membrane in order to quickly and non-destructively install, remove, or repair the waterproofing membranes on/in civil engineering structures, by using an external electromagnetic source to cause induction into the present material. The heating Lemperature used is typically higher than the melting temperature of the thermoplastic binder used to make the surfaces of the membrane.
In a second aspect the present invention relates to a method of applying a sheet of waterproofing to a surface of road structure comprising providing the road structure and material adapted to provide electromagnetic induction according to the invention, applying the material to a surface by induction or microwave heating to a temperature of at least 70 °C during a period of time sufficient to adhere the material as a waterproofing, such as during 10-60 sec.
In a third aspect the present invention relates to a method of removing a sheet of waterproofing, comprising providing the road structure and sheet according to the invention on a surface, removing the material adapted to provide electromagnetic induction from the surface by induction or microwave heating.
In a fourth aspect the present invention relates to a method of repairing a sheet of waterproofing, comprising providing the road structure and sheet according to the invention on a surface, repairing the material adapted to provide electromagnetic induction from the surface by induction or microwave heating.
Advantages of the present description are detailed throughout the descripticn.
40 DETAILED DESCRIPTION OF THE INVENTION
In an exemplary embodiment of the present road structure the electromagnetically inductive agents may be selected from metallic fibres, and metallic particles, such as ferromagnetic material, such as steel wool, iron powder, steel slag.
In an exemplary embodiment of the present road structure the bituminous material in the binder may be selected from natural and petroleum derived bitumen, ethylene propylene diene monomer EPDM rubber, hypalon, polyvinyl chloride, liquid roofing, and combinations thereof. The binder according to the invention may be any natural or petroleum derived bitumen, including straight run fractionation-derived bitumen, cracked bitumens, bitumens derived from processing such as air blowing, propane de- asphalting, steam de-asphalting, chemically modifying and the like. The bitumen selected depends on the end-product properties desired. Preferably, the bitumen is paraffinic or naphthenic bitumen. Typically, the bitumen may be modified with multi- block co-polymers having an amino group and/or imino group on both ends of the molecule used. The co-polymers can be available commercially from several suppliers and can be incorporated in the multi-block co-polymer by co-polymerizing a mix of conjugated diene and vinyl aromatic hydrocarbon monomers utilizing the difference in their co-polymerization reactivity rates. Exemplary polymers include those having the amino group and/or imino group introduced into both ends of the molecule having the skeleton of a conventional known diene rubber or its hydrogenation product (i.e., natural rubber, epoxidated natural rubber, isoprene rubber, styrene-butadiene rubber, hydrogenated styrene-butadiene rubber, butadiene rubber {high cis butadiene rubber or low cis butadiene rubber}, acrylonitrile-butadiene rubber, or hydrogenated acrylonitrile-butadiene rubber, olefin rubber (i.e., ethylene-propylene rubber, ethylene-propylene diene rubber, maleic modified ethylene-propylene rubber, butyl rubber, copolymer of isobutylene or an aromatic vinyl or diene monomer, acrylic rubber, or ionomer), halogen containing rubber (i.e., brominated butyl rubber, chlorinated butyl rubber, brominated isobutylene-paramethyl styrene copolymer, chloroprene rubber, hydrine rubber, chlorosulfonated polyethylene, chlorinated polyethylenes, or maleic modified chlorinated polyethylene), silicone rubber (i.e., methylvinyl silicone 40 rubber, or methylphenylvinyl silicone rubber), sulfur-containing rubber (i.e., polysulfide rubber), fluorocarbon rubber (i.e., vinylidene fluoride rubber, fluorine-containing vinyl ether rubber, or fluorine-containing phosphazene rubber), urethane rubber, liquid polyisoprene, liquid polybutadiene, liquid 1,2- 5 polybutadiene, liquid styrene-butadiene rubber, liquid polychloroprene, liquid silicone rubber, liquid fluorocarbon rubber, thermoplastic elastomer (i.e., styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer, styrene-ethylene butylene styrene block copolymer, or other styrene elastomers, olefin elastomer, ester elastomer, urethane elastomer, polyamide elastomer, polyvinyl chloride elastomer), or thermoset elastomer (i.e., urethane elastomer or silicone elastomer), and combination thereof.
In an exemplary embodiment of the present road structure the reinforcement layer, which may alsc be referred to as carrier sheet may be selected from woven and non-woven materials, synthetic polymers, such as polyethylene, polypropylene, polyethylene terephthalate, and nylon, blends and copolymers thereof, and mineral, wood, glass, aluminum, and combinations thereof.
In an exemplary embodiment of the present road structure the material adapted to provide electromagnetic induction may comprise 50-95 vol.% waterproofing, 0.5-25 vol.% binder, 0.2-20 vol.% electromagnetically inductive agent, the remainder being carrier sheet and optionally 1-10% filler.
In an exemplary embodiment the present road structure may comprise a reinforcement layer located in the middle of the material adapted to provide electromagnetic induction, parallel to the top and bottom surface, preferably wherein the layer is a membrane, In an exemplary embodiment the present road structure may comprise a carrier sheet located at the top and at the bottom of the material adapted to provide electromagnetic induction, parallel to the top and bottom surface.
In an exemplary embodiment the present road structure may comprise 2-4 waterproofings, and/or independently may comprise 2-4 carrier sheets per waterproofing, and/or independently comprising 2-4 binding layers per waterproofing, and/or independently may comprise 1-4 inlay layers per waterproofing, 40 wherein carrier sheets, binding layers, and inlay layers are preferably provided as a stack of layers.
In an exemplary embodiment of the present road structure the top layer may have a thickness of <20 cm, such as <10 cm.
In an exemplary embodiment the present road structure may comprise at least one top layer, at least one Guss Asphalt layer, and at least two waterproofings.
In an exemplary embodiment of the present method induction heating may be provided by an alternating electromagnetic field.
In an exemplary embodiment of the present method the surface may be selected from a multilayer civil engineering system, such as an asphalt concrete surfacing layer on orthotropic steel deck bridge, a roof, a pavement, such as an asphaltic pavement, a foundation, a wall, a basement, a building, and combinations thereof.
In an exemplary embodiment of the present method on the material adapted to provide electromagnetic induction a further asphalt concrete surfacing layer may be applied.
In an exemplary embodiment of the present method the further asphalt concrete surfacing layer may have a thickness of less than 10 cm.
The invention will hereafter be further elucidated through the following examples which are exemplary and explanatory of nature and are not intended to be considered limiting of the invention. To the person skilled in the art it may be clear that many variants, being obvious or not, may be conceivable falling within the scope of protection, defined by the present claims.
SUMMARY OF THE FIGURES Figs. la-e, 2-7 show some details.
DETAILED DESCRIPTION CF FIGURES In the figures: 100 road structure 1 top layer 2 inductive material (membrane) 2a waterproofing 2b bituminous material 2c inductive agent 3 carrier sheet 4 reinforcement layer 7 Guss asphalt 40 8 deck plate
9 inlay 10 electromagnetic source Figure la-e show common failure types with prior art (i.e., slippage in Fig. la, corrugation and shoving in Fig. 1b, adhesive failure in Fig. lc, cracking in Fig. 1d and rutting in Fig. le).
Figure 2 shows a graphical representation of a multilayer road structure 100 on a steel deck 8 comprising a top layer 1, the inductive membrane 2 and Guss asphalt 7.
Figure 3a shows a graphical representation of the inductive membrane 2, which is provided with a waterproofing Za on the top and on the bottom of a reinforcement layer 4. The inductive membrane is able to absorb electromagnetic fields from an induction source 7.
Figure 3b shows a graphical representation of the cross section of the inductive membrane 2, in which the waterproofing 2a comprises inductive agents 2b and a bituminous material Zc. Between the two waterproofings, a reinforcement layer 4 is shown as well, which is in contact with waterproofings 2a via inlays
9.
Figure £4 shows a graphical representation of the cross section of a multilayer road structure 100 on a deck plate 5 comprising a top layer 1, two inductive membranes 2, one on the top of Guss asphalt 7 and one on the top of deck plate 8. Both membranes are induction heated via a mobile electromagnetic induction source 7.
Figure 5 shows the results of induction heating of the inductive bituminous waterproofing membrane in the laboratory. The details of the laboratory experiments are provided in the Examples section.
Examples An inductive bituminous waterproofing membrane which comprises an waterproofing on the top and on the bottom of a polyester-based reinforcement layer was used herein to evaluate the rate of induction heating on the surface of membrane. Steel fibers were used as inductive agents, mixed together with bitumen modified with a styrene-butadiene-styrene block copolymer to form the waterproofing.
Induction heating tests were conducted at 20 °C for 30 sec 40 by using an induction generator of 0.55 kV supplied power and under an alternating electromagnetic field of 64.5 kHz frequency. During the induction heating, the temperature increase on the surface of inductive membrane, which was the surface of waterproofing part of membrane, was monitored with an infrared camera. Fig. 5 shows the average temperature developed over 30 sec of induction heating which increased from 20 °C to 110 °C in 30 seconds.
For the sake of searching the following section is added which represents a translation of the subsequent section.
1. Road (100) structure comprising a top layer {1) suited for traffic, underneath the top layer at least one material adapted to provide electromagnetic induction (2) comprising at least one waterproofing (2a), the waterproofing comprising at least one bituminous material (2b), the bituminous material comprising at least one bituminous binder, and an electromagnetically inductive agent (2c}, and optionally at least one carrier sheet (3).
2. Road structure according to claim 1, wherein the electromagnetically inductive agents are selected from metallic fibres, and metallic particles, such as ferromagnetic material, such as steel wool, iron powder, steel slag.
3. Road structure according to any of claims i-2, wherein the binder is selected from naturel and petroleum derived bitumen, ethylene propylene diene monomer EPDM rubber, hypalon, polyvinyl chloride, liquid roofing, and combinations thereof.
4. Road structure according to any of claims 1-3, wherein the carrier sheet is selected from woven and non-woven materials, synthetic polymers, such as polyethylene, polypropylene, polyethylene terephthalate, and nylon, blends and copolymers thereof, and mineral, wood, glass, aluminum, and combinations thereof.
5. Road structure according to any of claims 1-4, wherein the material adapted tc provide electromagnetic induction comprises 50-95 vol.% waterproofing,
0.5-25 vol.% binder,
0.2-20 vol.% electromagnetically inductive agent, the remainder being reinforcement layer and opticnally filler.
49 6. Road structure according tc any of claims 1-5, comprising a
S reinforcement layer (4) located in the middle of the material adapted to provide electromagnetic induction, parallel to the top and bottom surface, preferably wherein the layer is a membrane.
7. Road structure according to any of claims 1-6, comprising a reinforcement layer located at the top and at the bottom of the material adapted to provide electromagnetic induction, parallel to the top and bottom surface.
8. Road structure according to any of claims 1-7, comprising 2-4 waterproofings, and/or independently comprising 2-4 reinforcement layers per waterproofing, and/or independently comprising 2-4 binding layers per waterproofing, and/or independently comprising 1-4 inlay layers per waterproofing, wherein reinforcement layers, binding layers, and inlay layers are preferably provided as a stack of layers.
9, Road structure according to any of claims 1-8, wherein the top layer has a thickness of < 20 cm, such as < 10 cm.
10. Road structure according to any of claims 1-9, comprising at least one top layer (1), at least one Guss Asphalt layer (7), and at least two waterproofings (2a).
11. Method of applying a sheet of waterproofing to a surface of road structure, comprising providing the road structure and material adapted to provide electromagnetic induction according to any of claims 1-10, applying the material to a surface by induction or microwave heating to a temperature of at least 70 °C during a period of time sufficient to adhere the material as a waterproofing, such as during 10-60 sec.
12. Method of removing a sheet of waterproofing, comprising providing the road structure and sheet according to any of claims 1-10 on a surface, removing the material by providing electromagnetic induction from the surface by induction or microwave heating.
13. Method of repairing a sheet of waterproofing, comprising providing the road structure and sheet according to any of claims 1-10 on a surface, repairing the material by providing electromagnetic induction from the surface by induction or microwave heating.
14. Method according to any of claims 11-13, wherein induction 40 heating is provided by an alternating electromagnetic field.
15. Method according to any of claims 11-14, wherein the surface is selected from a multilayer civil engineering system, such as an asphalt concrete surfacing layer on an orthotropic steel deck bridge, a roof, a pavement, such as an asphaltic pavement, a foundation, a wall, a basement, a building, and combinations thereof.
16. Method according to any of claims 11-15, wherein on the material adapted to provide electromagnetic induction a further asphalt concrete surfacing layer is applied.
17. Method according to claim 16, wherein the further asphalt concrete surfacing layer has a thickness of less than 10 cm.
Claims (17)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2023452A NL2023452B1 (en) | 2019-07-08 | 2019-07-08 | Inductive Bituminous Waterproofing Membrane |
| PCT/NL2020/050380 WO2021006724A1 (en) | 2019-07-08 | 2020-06-12 | Inductive bituminous waterproofing membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2023452A NL2023452B1 (en) | 2019-07-08 | 2019-07-08 | Inductive Bituminous Waterproofing Membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2023452B1 true NL2023452B1 (en) | 2021-02-02 |
Family
ID=68000024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2023452A NL2023452B1 (en) | 2019-07-08 | 2019-07-08 | Inductive Bituminous Waterproofing Membrane |
Country Status (2)
| Country | Link |
|---|---|
| NL (1) | NL2023452B1 (en) |
| WO (1) | WO2021006724A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4849020A (en) * | 1987-04-20 | 1989-07-18 | The Titan Corporation | Asphalt compounds and method for asphalt reconditioning using microwave radiation |
| WO2002050375A1 (en) * | 2000-12-18 | 2002-06-27 | Vermeer Infrastructuur B.V. | Road construction, apparatus and method for realising it |
| WO2010031530A1 (en) * | 2008-09-19 | 2010-03-25 | Landesbetrieb Strassenbau Nrw | Road surface that can be installed in sheets and method for the production and installation thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1021183B1 (en) * | 2013-12-05 | 2015-06-09 | Nv De Boer Waterproofing Solutions | METHOD FOR WATERPROOF SEALING OF ROOF COVER |
-
2019
- 2019-07-08 NL NL2023452A patent/NL2023452B1/en not_active IP Right Cessation
-
2020
- 2020-06-12 WO PCT/NL2020/050380 patent/WO2021006724A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4849020A (en) * | 1987-04-20 | 1989-07-18 | The Titan Corporation | Asphalt compounds and method for asphalt reconditioning using microwave radiation |
| WO2002050375A1 (en) * | 2000-12-18 | 2002-06-27 | Vermeer Infrastructuur B.V. | Road construction, apparatus and method for realising it |
| WO2010031530A1 (en) * | 2008-09-19 | 2010-03-25 | Landesbetrieb Strassenbau Nrw | Road surface that can be installed in sheets and method for the production and installation thereof |
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| Publication number | Publication date |
|---|---|
| WO2021006724A1 (en) | 2021-01-14 |
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