CN105133665A - Efficient waterproof self-repairing structure and construction method for underground construction leakage treatment - Google Patents
Efficient waterproof self-repairing structure and construction method for underground construction leakage treatment Download PDFInfo
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- CN105133665A CN105133665A CN201510595115.4A CN201510595115A CN105133665A CN 105133665 A CN105133665 A CN 105133665A CN 201510595115 A CN201510595115 A CN 201510595115A CN 105133665 A CN105133665 A CN 105133665A
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Abstract
The invention relates to an efficient waterproof self-repairing structure and construction method for underground construction leakage treatment. The structure is composed of an organosilicone bottom coating, a polymer cement mortar regulating layer, an organosilicone hydrophobic layer, a self-repairing layer and a polymer cement waterproof coating modified layer, wherein the self-repairing layer is a cement-based coating which can achieve self-repairing both in the dry environment and in the moist environment, the self-repairing layer contains liquid core fiber and a capillary crystalline active material, and an inner core of the liquid core fiber is a low-viscosity adhesive. According to the construction method, the organosilicone bottom coating is applied firstly through brush coating, the polymer cement mortar regulating layer is sprayed after the surface of the organosilicone bottom coating is dried, the organosilicone hydrophobic layer is sprayed after initial set of the regulating layer, then the self-repairing layer is applied through blade coating, and finally the polymer cement waterproof coating modified layer is applied. The method has the advantages that construction performance is high, interface adhesion is firm, self-repairing can be achieved both in the dry environment and in the moist environment, and weather resistance is excellent, and is suitable for underground construction leakage treatment.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of high-effective water-proof selfreparing structure for the regulation of underground construction Concrete Leakage and construction method.
Background technology
According to statistics, by the end of the year 2005, more than 7500, China's railway construction tunnel, more than 430 ten thousand linear meters, wherein length exceedes the super long tunnel 7 of myriametre, and tunnel quantity and total length are all at the forefront in the world; 2889, highway operation tunnel, 1,520,000 linear meters, wherein super long tunnel 43,16.59 ten thousand linear meters.In recent years, along with the fast development of infrastructure construction, the quantity rapid development in tunnel.
But show according to incompletely statistics, there is seepage in 70% railway tunnel in the whole nation, serious has 1362, accounts for 30% of operation tunnel, and the underground constructions such as such as subway, underground people's air defense, underground garage also face the problems such as seepage.Obviously, tunnels and underground engineering seepage becomes quality problems comparatively outstanding in current underground construction, also result in great economic loss and casualties.Cause in the reason of leakage of underground engineering water various, material and construction reason account for more than 67%, and design and other reasons account for 21%, and maintenance is not good at accounting for 2%.As can be seen here, the reason of underground construction generation seepage is many-sided, wherein material and construction quality are major influence factors, but at present underground project waterproof structure and construction technology not perfect, therefore the research carrying out underground construction high-effective water-proof system is particularly crucial, plays important effect to raising underground engineering structure waterproof quality.
Chinese patent (CN203742002) discloses a kind ofly has infiltration and the waterproofing and leakage-stopping structure of self-repair function, and this technology must rely on absorbent material imbibition, is medium competence exertion self-repair function with water simultaneously.In prior art, have for leakage of underground engineering process Dare structure and construction method and applied, but from applied environment and renovating effect, still there is some problem following: (1) mostly administration structure only adopts two to three layer construction to process, and cannot realize the dual needs of efficient hydrophobic waterproof and self-reparing capability; (2) even if possess selfreparing or self-healing function, also competence exertion self-repair function is in wet condition necessarily required, and the final effect of this and treating seepage is disagreed, restricted by environmental factor, the needs of underground engineering structure crack autogenous healing under drying regime cannot be met, cause carbonation of concrete, corrosion of steel bar, durability damage, even brings major hidden danger to structural safety.
Summary of the invention
Goal of the invention: the object of the invention is to solve the deficiencies in the prior art, provide and a kind ofly to have good workability, interfacial adhesion jail, efficient hydrophobic waterproof, all can realize selfreparing effect and the superior selfreparing structure of weatherability and construction method under drying and wet condition, another object of the present invention is repaired underground engineering structure seepages such as high-speed railway, highway, track traffics as a kind of high-effective water-proof selfreparing structure and construction method.
Technical scheme: in order to realize above object, the invention provides a kind of high-effective water-proof selfreparing structure for leakage of underground engineering regulation and construction method, described structure is made up of organosilicon scratch coat, polymer cement mortar adjustment layer, organosilicon water-repellent layer, reconditioning layer and polymer cement waterproof paint decorative layer, described reconditioning layer is a kind of cement based coating that all can realize self-repair function at dry and the dual environment of humidity, includes liquid core fibre and penetrant crystalline active material that kernel is low viscosity adhesive;
Described liquid core fibre kernel is the one in low-viscosity polyurethane, epoxy resin, acrylate adhesive, and shell is the one in polyester, polyvinyl chloride, polyacrylonitrile, vinylon;
Described organosilicon scratch coat is by N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 3-isocyanatopropyl triethoxysilane, one or more in ethyl orthosilicate;
Described polymer cement mortar adjustment layer is the cement-based mortar containing modulus adjustment component, polymer latex powder component, water-retaining component; Described modulus adjustment component is specific area is 40 ~ 80m
2one or both in/g polymer hollow microsphere, glass bead; Described polymer latex powder component is redispersable latex powder, is specially one or both in polyvinyl acetate glue powder, styrene and butadiene copolymer rubber powder; Described water-retaining component is polyvinyl alcohol water-absorbing resin, one or both in polyacrylic water-absorbing resin, and volume is 120 ~ 180g/m
2;
Described organosilicon water-repellent layer is the impregnating with silane material containing one or both in isobutyl triethoxy silane, isooctyltriethoxysilane, and solvent is 0 ~ 35%;
Described polymer cement-base waterproof coating decorative layer liquid material be in pure-acrylic emulsion, benzene emulsion one or both, siccative is one or more in white cement, ordinary portland cement, titanium dioxide, channel black, decorative layer color is adjusted by siccative, and liquid ratio is 1: 1 ~ 0.6: 1;
Described construction method brushes 2 ~ 3 times organosilicon scratch coats for first adopting " right-angled intersection method ", individual layer wet-film thickness controls at 75 ~ 125 μm, spraying polymer cement mortar adjustment layer after surface drying, sprays organosilicon water-repellent layer after layer initial set to be adjusted, and quantity for spray is 200 ~ 300g/m
2, then blade coating thickness is the reconditioning layer of 2 ~ 6mm, finally carries out polymer cement waterproof decorative layer and applies.
Working mechanism:
The present invention is made up of organosilicon scratch coat, polymer cement mortar adjustment layer, organosilicon water-repellent layer, reconditioning layer and polymer cement waterproof paint decorative layer.Wherein, organosilicon scratch coat Main Function is: carry out interface processing to base material concrete, effectively improves interface adhesion by chemical bonding and physisorption, polymer cement mortar adjustment layer, as the agent structure that seepage is repaired, play on the one hand and fill and the effect of adjustment hurt area thickness, flux matched to realize with base material concrete mould by adding modulus adjustment composition on the other hand, add polymer glue powder and can increase screed cohesive strength, improve cracking resistance ability, thixotroping and anti-property of hanging down are provided, are beneficial to sprayed construction, adding water-retaining component, for providing moisture in polymer cement mortar adjustment layer hardening process, making it have crack resistance, then organosilicon water-repellent layer is utilized to carry out impregnation process, utilize small molecule structure characteristic, the cement of percdation concrete capillary hole wall and aquation reacts formation inierpeneirating network structure, and form stable covalent bond with concrete material and be connected, formation one firmly water-repellent layer, make capillary hole wall hydrophobisation, significantly reduce the absorptivity of concrete to chlorion and water, to ultraviolet radiation, heat, corrosive chemical and microorganism etc., there is good resistance simultaneously, extend concrete structure durability, reconditioning layer adopts the cement based coating of liquid core fibre and the penetrant crystalline active material composition containing one-component or two component low viscosity adhesive, in dry environments, once concrete produces cracking, part will rupture containing the liquid core fibre of low viscosity adhesive, inner adhesive flows out, form bonding at crack interface solidification, the concrete self-healing properties achieved under dry environment excites, under moist environment, penetrant crystalline active material is under the same-action of chemical potential gradient (concentration difference) with pressure differential, active chemistry can by the water existed in concrete pore (comprising the secondary water of intrusion), penetrate into concrete structure inside, react with the free calcium ions in hole and oxide generation crystalline deposit, generate water-fast crystalline solid, capillary interstice net in blocking concrete, minute aperture and microcrack, realize self-repair function to excite, both synergies, the performance of self-repair function all can be realized under there is drying and moist dual environment.Both played the effect of efficient hydrophobic waterproof, and the crack self-healing ability under any environment can have been realized again, reach the effect of secondary impermeability.
The present invention is by rationally effectively composite by hydrophober and selfreparing active material, preferred coating order and coating layer thickness, in the deficiency that interface binding intensity is low both efficiently solving, the problem of same system cannot be coexisted in, both achieve this technology and both met underground construction efficient hydrophobic waterproof demand, solve again the self-healing properties only having active material under moisture conditions.
Beneficial effect: a kind of high-effective water-proof selfreparing structure for the regulation of underground construction Concrete Leakage provided by the invention and construction method, find through lot of experiments comparative study, hinge structure has the performance of following excellence:
(1) favorable working performance, construct convenient, between operation, interval time is short, improves efficiency of construction;
(2) modulus and base material concrete match, and ensure that the stressed load of structure is even;
(3) interfacial bond property is good, the old and new's interfacial adhesion jail;
(4) there is hydrophobicity, reduce the absorptivity of concrete to chlorion and water;
(5) there is the crack autogenous healing ability under drying and moist environment and secondary impermeability ability.
Detailed description of the invention
Below by embodiment, the invention will be further described.These embodiments only for for explaining explanation the present invention, and do not limit the scope of the invention.
Embodiment 1
Remove seepage region dust and damaged concrete, " right-angled intersection method " is first adopted to brush 2 times N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane organosilicon scratch coats, every layer of wet-film thickness controls at 100 μm, sprays containing polymer hollow microsphere (specific area 40m after surface drying
2/ g), the polymer cement mortar adjustment layer of polyvinyl acetate glue powder and polyacrylic water-absorbing resin, adjustment layer thickness and base material concrete structure match, after waterproofing course initial set, spray solvent is 15% isobutyl triethoxy silane impregnated material, and quantity for spray is 200g/m
2then blade coating thickness is 3mm kernel is the polyvinyl formal liquid core fibre of low-viscosity polyurethane and the cement based coating of penetrant crystalline active material, finally brushing liquid material is pure-acrylic emulsion, siccative is specially white cement: ordinary portland cement: titanium dioxide ratio 1: 1: 0.005, and liquid ratio is the polymer cement waterproof decorative layer of 1: 1.
Embodiment 2
Remove seepage region dust and damaged concrete, first adopt " right-angled intersection method " to brush 3 times ethyl orthosilicate organosilicon scratch coats, every layer of wet-film thickness controls at 75 μm, sprays containing glass bead (specific area 55m after surface drying
2/ g), the polymer cement mortar adjustment layer of styrene and butadiene copolymer rubber powder and polyvinyl alcohol water-absorbing resin, adjustment layer thickness and base material concrete structure match, after waterproofing course initial set, spray the isobutyl triethoxy silane impregnated material that solvent is 35%, quantity for spray is 300g/m
2then blade coating thickness is 2mm kernel is the polyvinyl chloride liquid core fibre of low viscosity epoxy resin and the cement based coating of penetrant crystalline active material, finally brushing liquid material is benzene emulsion, siccative is specially white cement: ordinary portland cement: titanium dioxide: channel black ratio 1: 1: 0.005: 0.0002, and liquid ratio is the polymer cement waterproof decorative layer of 0.8: 1.
Embodiment 3
Remove seepage region dust and damaged concrete, " right-angled intersection method " is first adopted to brush 2 times 3-isocyanatopropyl triethoxysilane organosilicon scratch coats, every layer of wet-film thickness controls at 125 μm, sprays containing polymer hollow microsphere (specific area 40m after surface drying
2/ g): glass bead (specific area 80m
2/ g)=1: 1, the polymer cement mortar adjustment layer of styrene and butadiene copolymer rubber powder and polyvinyl alcohol water-absorbing resin, adjustment layer thickness and base material concrete structure match, after waterproofing course initial set, spray the isooctyltriethoxysilane impregnated material that solvent is 28%, quantity for spray is 250g/m
2then blade coating thickness is 6mm kernel is the polyester liquid core fibre of low viscosity acrylate and the cement based coating of penetrant crystalline active material, finally brushing liquid material is benzene emulsion, siccative is specially white cement: ordinary portland cement: titanium dioxide: channel black ratio 0.5: 1: 0.01: 0.0005, and liquid ratio is the polymer cement waterproof decorative layer of 0.6: 1.
Embodiment 4
Remove seepage region dust and damaged concrete, first adopt " right-angled intersection method " to brush 3 times ethyl orthosilicate organosilicon scratch coats, every layer of wet-film thickness controls at 75 μm, sprays containing glass bead (specific area 80m after surface drying
2/ g), the polymer cement mortar adjustment layer of styrene and butadiene copolymer rubber powder and polyvinyl alcohol water-absorbing resin, adjustment layer thickness and base material concrete structure match, after waterproofing course initial set, spray the isobutyl triethoxy silane impregnated material that solvent is 0, quantity for spray is 200g/m
2then blade coating thickness is 4mm kernel is the polyacrylonitrile liquid core fibre of low-viscosity polyurethane and the cement based coating of penetrant crystalline active material, finally brushing liquid material is pure-acrylic emulsion, siccative is specially white cement: ordinary portland cement: channel black ratio 1: 1: 0.005, and liquid ratio is the polymer cement waterproof decorative layer of 0.7: 1.
Embodiment 5
Remove seepage region dust and damaged concrete, " right-angled intersection method " is first adopted to brush 3 times N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane organosilicon scratch coats, every layer of wet-film thickness controls at 90 μm, sprays containing polymer hollow microsphere (specific area 60m after surface drying
2/ g), the polymer cement mortar adjustment layer of polyvinyl acetate glue powder and polyacrylic water-absorbing resin, adjustment layer thickness and base material concrete structure match, after waterproofing course initial set, spray the isooctyltriethoxysilane impregnated material that solvent is 15%, quantity for spray is 260g/m
2then blade coating thickness is 3mm kernel is the polyvinyl formal liquid core fibre of low viscosity acrylate and the cement based coating of penetrant crystalline active material, finally brushing liquid material is pure-acrylic emulsion, siccative is specially white cement: ordinary portland cement: titanium dioxide ratio 1: 1: 0.005, and liquid ratio is the polymer cement waterproof decorative layer of 1: 1.
According to the method for the invention, and the leakage of underground engineering training works adopting above embodiment to carry out implementing process has and has good workability, and interface adhesion is good, and possess hydrophobicity and self-healing properties, renovating effect is good simultaneously.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art are according to announcement of the present invention, and the improvement made for the present invention and amendment all should within protection scope of the present invention.
Claims (7)
1. the high-effective water-proof selfreparing structure for leakage of underground engineering regulation and construction method, it is characterized in that: this structure is made up of organosilicon scratch coat, polymer cement mortar adjustment layer, organosilicon water-repellent layer, reconditioning layer and polymer cement waterproof paint decorative layer, described reconditioning layer is a kind of cement based coating that all can realize self-repair function at dry and the dual environment of humidity, includes liquid core fibre and penetrant crystalline active material that kernel is low viscosity adhesive.
2. a kind of high-effective water-proof selfreparing structure for leakage of underground engineering regulation according to claim 1 and construction method, it is characterized in that: described liquid core fibre kernel is the one in low-viscosity polyurethane, epoxy resin, acrylate adhesive, and shell is the one in polyester, polyvinyl chloride, polyacrylonitrile, vinylon.
3. a kind of high-effective water-proof selfreparing structure for leakage of underground engineering regulation according to claim 1 and construction method, it is characterized in that: described organosilicon scratch coat is by N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 3-isocyanatopropyl triethoxysilane, one or more in ethyl orthosilicate.
4. a kind of high-effective water-proof selfreparing structure for leakage of underground engineering regulation according to claim 1 and construction method, is characterized in that: described polymer cement mortar adjustment layer is the cement-based mortar containing modulus adjustment component, polymer latex powder component, water-retaining component; Described modulus adjustment component is specific area is 40 ~ 80m
2one or both in/g polymer hollow microsphere, glass bead; Described polymer latex powder component is redispersable latex powder, is specially one or both in polyvinyl acetate glue powder, styrene and butadiene copolymer rubber powder; Described water-retaining component is polyvinyl alcohol water-absorbing resin, one or both in polyacrylic water-absorbing resin, and volume is 120 ~ 180g/m
2.
5. a kind of high-effective water-proof selfreparing structure for leakage of underground engineering regulation according to claim 1 and construction method, it is characterized in that: described organosilicon water-repellent layer is the impregnating with silane material containing one or both in isobutyl triethoxy silane, isooctyltriethoxysilane, and solvent is 0 ~ 35%.
6. a kind of high-effective water-proof selfreparing structure for leakage of underground engineering regulation according to claim 1 and construction method, it is characterized in that: described polymer cement-base waterproof coating decorative layer liquid material is one or both in pure-acrylic emulsion, benzene emulsion, siccative is one or more in white cement, ordinary portland cement, titanium dioxide, channel black, decorative layer color is adjusted by siccative, and liquid ratio is 1: 1 ~ 0.6: 1.
7. a kind of high-effective water-proof selfreparing structure for leakage of underground engineering regulation according to claim 1 and construction method, it is characterized in that: described construction method brushes 2 ~ 3 times organosilicon scratch coats for first adopting " right-angled intersection method ", individual layer wet-film thickness controls at 75 ~ 125 μm, spraying polymer cement mortar adjustment layer after surface drying, spray organosilicon water-repellent layer after layer initial set to be adjusted, quantity for spray is 200 ~ 300g/m
2, then blade coating thickness is the reconditioning layer of 2 ~ 6mm, finally carries out polymer cement waterproof decorative layer and applies.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106917630A (en) * | 2015-12-24 | 2017-07-04 | 长沙科密水建筑材料科技有限公司 | A kind of tunnel combination of rigidity and flexibility waterproof method |
| CN109762413A (en) * | 2018-12-25 | 2019-05-17 | 广东青龙建筑工程有限公司 | Two-component self-healing polymers cement waterproof paint based on liquid-core optical fibre method and preparation method thereof |
| CN111517690A (en) * | 2020-04-21 | 2020-08-11 | 杭州砺品科技有限公司 | Concrete anti-seepage agent and preparation process thereof |
| CN113045266A (en) * | 2021-02-05 | 2021-06-29 | 广东恒业水泥制品有限公司 | Self-repairing fiber reinforced ultra-high performance concrete pole and processing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917630A (en) * | 2015-12-24 | 2017-07-04 | 长沙科密水建筑材料科技有限公司 | A kind of tunnel combination of rigidity and flexibility waterproof method |
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| CN111517690A (en) * | 2020-04-21 | 2020-08-11 | 杭州砺品科技有限公司 | Concrete anti-seepage agent and preparation process thereof |
| CN113045266A (en) * | 2021-02-05 | 2021-06-29 | 广东恒业水泥制品有限公司 | Self-repairing fiber reinforced ultra-high performance concrete pole and processing method thereof |
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Application publication date: 20151209 |