CN116199490A - Silicon-based grouting material suitable for dense and weak stratum reinforcement and impermeability treatment and preparation method thereof - Google Patents
Silicon-based grouting material suitable for dense and weak stratum reinforcement and impermeability treatment and preparation method thereof Download PDFInfo
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- CN116199490A CN116199490A CN202310097166.9A CN202310097166A CN116199490A CN 116199490 A CN116199490 A CN 116199490A CN 202310097166 A CN202310097166 A CN 202310097166A CN 116199490 A CN116199490 A CN 116199490A
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- 239000000463 material Substances 0.000 title claims abstract description 69
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 31
- 239000010703 silicon Substances 0.000 title claims abstract description 31
- 230000002787 reinforcement Effects 0.000 title claims abstract description 30
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 17
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 16
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 12
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 238000005755 formation reaction Methods 0.000 claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 11
- 229920001971 elastomer Polymers 0.000 claims abstract description 11
- 239000005060 rubber Substances 0.000 claims abstract description 11
- 239000004094 surface-active agent Substances 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 23
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 18
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 claims description 18
- 235000019353 potassium silicate Nutrition 0.000 claims description 12
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 11
- 239000000839 emulsion Substances 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- KMZHZAAOEWVPSE-UHFFFAOYSA-N 2,3-dihydroxypropyl acetate Chemical compound CC(=O)OCC(O)CO KMZHZAAOEWVPSE-UHFFFAOYSA-N 0.000 claims description 9
- 239000004348 Glyceryl diacetate Substances 0.000 claims description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 235000019443 glyceryl diacetate Nutrition 0.000 claims description 9
- 235000013773 glyceryl triacetate Nutrition 0.000 claims description 9
- 239000001087 glyceryl triacetate Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 229940072033 potash Drugs 0.000 claims description 9
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 9
- 235000015320 potassium carbonate Nutrition 0.000 claims description 9
- 239000011780 sodium chloride Substances 0.000 claims description 9
- 229960002622 triacetin Drugs 0.000 claims description 9
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 6
- 238000005728 strengthening Methods 0.000 claims description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 4
- UXDDRFCJKNROTO-UHFFFAOYSA-N Glycerol 1,2-diacetate Chemical compound CC(=O)OCC(CO)OC(C)=O UXDDRFCJKNROTO-UHFFFAOYSA-N 0.000 claims description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 2
- 239000002174 Styrene-butadiene Substances 0.000 claims description 2
- MWGMEGAYPPQWFG-UHFFFAOYSA-N [SiH4].OC(=O)C=C Chemical compound [SiH4].OC(=O)C=C MWGMEGAYPPQWFG-UHFFFAOYSA-N 0.000 claims description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 2
- 239000001103 potassium chloride Substances 0.000 claims description 2
- 235000011164 potassium chloride Nutrition 0.000 claims description 2
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 2
- 239000011115 styrene butadiene Substances 0.000 claims description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 2
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 2
- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical compound S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 claims description 2
- -1 epoxysilane Chemical compound 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000007596 consolidation process Methods 0.000 abstract description 8
- 239000002689 soil Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 229910004298 SiO 2 Inorganic materials 0.000 abstract description 2
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001879 gelation Methods 0.000 abstract description 2
- 239000011044 quartzite Substances 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 27
- 239000011435 rock Substances 0.000 description 26
- OCKPCBLVNKHBMX-UHFFFAOYSA-N butylbenzene Chemical compound CCCCC1=CC=CC=C1 OCKPCBLVNKHBMX-UHFFFAOYSA-N 0.000 description 14
- 238000012669 compression test Methods 0.000 description 7
- 239000005543 nano-size silicon particle Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
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- 239000004568 cement Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
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- 230000001105 regulatory effect Effects 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
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- 239000004576 sand Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 244000179970 Monarda didyma Species 0.000 description 1
- 235000010672 Monarda didyma Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
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- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 125000005456 glyceride group Chemical group 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Images
Classifications
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- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/12—Acids or salts thereof containing halogen in the anion
- C04B22/124—Chlorides of ammonium or of the alkali or alkaline earth metals, e.g. calcium chloride
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
- C04B24/045—Esters, e.g. lactones
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention belongs to the field of grouting reinforcement and seepage-proofing grouting materials for tunnels and underground engineering, and provides a silicon-based grouting material suitable for dense and weak stratum reinforcement and seepage-proofing treatment and a preparation method thereof, wherein the silicon-based grouting material comprises the following steps: group AThe component A comprises the following components: 50-95 parts of nano silica sol solution, 1-20 parts of accelerator, 1-20 parts of rubber auxiliary agent and 0-20 parts of silane coupling agent; the component B comprises the following components: 80-95 parts of silicate solution, 5-20 parts of water, 0.1-10 parts of catalyst and 0-0.5 part of surfactant. The silicon-based grouting material can effectively solidify compact and weak soil bodies, especially for SiO 2 The grouting reinforcement and impermeability effects are better for the formations such as the saddle mountain basalt, the quartzite, the silicalite sandstone and the like with higher content; the material can be dehydrated and condensed with silicon hydroxyl groups on the surface of a rock-soil body to form a silicon-oxygen covalent bond and the like while realizing self-gelation, so that the consolidation efficiency is further improved, and the formed consolidated body has the characteristics of high strength and long service life.
Description
Technical Field
The invention belongs to the technical field of grouting reinforcement and seepage-proofing grouting materials for tunnels and underground engineering, and particularly relates to a silicon-based grouting material suitable for reinforcement and seepage-proofing treatment of compact and weak stratum and a preparation method thereof.
Background
The disclosure of this background section is only intended to increase the understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.
At present, due to complex topography and geological conditions, poor geological types are various, so that serious geological disasters such as mud bursting, water flushing, large deformation, collapse and the like frequently occur in tunnel and underground engineering construction, and the serious geological disasters become a key problem for restricting engineering safety construction.
Grouting is a main method for disaster management of tunnels and underground engineering, and after grouting into stratum and gelling and solidifying, physical and mechanical properties of surrounding rock can be obviously improved, and disaster occurrence risk is reduced. However, increasingly complex geological conditions place greater demands on the performance of the grouting slurry. Generally, for fractured rock mass, fault fracture zone and the like with larger void ratio, the conventional cement-based slurry can meet the requirements of surrounding rock reinforcement and water shutoff; however, for compact and weak strata such as crushed rock, fine sand, dolomite sand and the like, conventional cement-based slurry is difficult to inject due to small particle size, low void ratio and weak inter-particle cohesion, and cannot form an effective permeation diffusion radius, and meanwhile, the slurry consolidation effect is poor, so that the grouting treatment is difficult to achieve the expected effect. In addition, even if the existing organic or inorganic solution type grouting materials (such as water glass, polyurethane, epoxy resin, acrylamide and lignin type slurry) are adopted for the compact and weak stratum, the problems of poor injectability, low consolidation strength, high economic cost, weak environmental protection performance and the like exist in different degrees.
For example: patent 202210618594.7 discloses an anti-dispersion grouting material for grouting and plugging water in a water-rich stratum, and a preparation method and a construction method thereof. The grouting material comprises: a powder material A component and a liquid material B component; the powder A component comprises: a gelling material, polymer rubber powder and an auxiliary agent; the liquid material B comprises the following components: silicate, silica sol, water glass modifier and water. However, the grouting material is cement-based material, silicate, silica sol, water glass and the like are used as additives, and the additives are added to adjust the initial setting time of cement, so that the grouting material has poor injectability in compact and weak stratum.
Aiming at the urgent need of disaster prevention and control of dense and weak stratum in tunnels and underground engineering, development of solution slurry with good injectability, strong consolidation capability, low cost and good environmental protection performance is needed.
Disclosure of Invention
In order to solve the problem that the existing material is not strong in applicability to compact and weak stratum rock, the invention provides a silicon-based grouting material suitable for compact and weak stratum reinforcement and impermeability treatment and a preparation method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in a first aspect of the present invention, there is provided a silica-based grouting material suitable for use in dense weak formation strengthening and impervious treatment, comprising: the volume ratio of the component A to the component B is 1:0.5 to 1:2;
the component A consists of the following raw materials in parts by weight: 50-95 parts of nano silica sol solution, 1-20 parts of accelerator, 1-20 parts of rubber auxiliary agent and 0-20 parts of silane coupling agent;
the component B consists of the following raw materials in parts by weight: 80-95 parts of silicate solution, 5-20 parts of water, 0.1-10 parts of catalyst and 0-0.5 part of surfactant.
The invention provides a silicon-based grouting material suitable for dense and weak stratum reinforcement and impervious treatment and a preparation method thereof, which can provide material support for grouting treatment of dense and weak strata such as crushed rock and the like.
In a second aspect of the present invention, a method for preparing a silica-based grouting material suitable for dense and weak formation reinforcement and impermeability treatment is provided, comprising:
respectively adding an accelerator, a rubber auxiliary agent and a silane coupling agent into the nano silica sol, and uniformly mixing to obtain a component A slurry;
dissolving a catalyst and a surfactant in water, adding a silicate solution, and uniformly mixing to obtain a B-component slurry;
and (3) the slurry of the component A and the slurry of the component B are prepared according to the construction requirement according to the following ratio of 1:0.5 to 1:2, mixing in a proportion range to form the silicon-based grouting material suitable for strengthening and impermeability treatment of the compact and weak stratum.
In a third aspect, the invention provides application of the grouting material in tunnel and underground engineering construction.
The beneficial effects of the invention are that
(1) The viscosity range of the A, B components of the silicon-based grouting material is 2-9 cP, and the material can be injected into a stratum with the particle size smaller than 0.01mm, and has good injectability in a compact stratum; A. after the component B is mixed, the coagulation time is adjustable within the range of 5 min-1 h; typically, the materials remain low viscosity and strong injectability for a period of time after the two components are mixed until the setting time is reached.
(2) The silicon-based grouting material can be effectively solidifiedDense and weak soil, especially for SiO 2 The grouting reinforcement and impermeability effects are better for the formations such as the saddle mountain basalt, the quartzite, the silicalite sandstone and the like with higher content; the material can be dehydrated and condensed with silicon hydroxyl groups on the surface of a rock-soil body to form a silicon-oxygen covalent bond and the like while realizing self-gelation, so that the consolidation efficiency is further improved, and the formed consolidated body has the characteristics of high strength and long service life.
(3) The silicon-based grouting material is suitable for grouting construction of compact and weak stratum, in order to ensure the cementing and consolidation effects of slurry, grouting holes with water inflow less than 20L/min are preferably selected during grouting, and a double-liquid pumping mode is adopted to fully mix the component A and the component B at the orifice of the grouting holes.
(4) The accelerator is glyceride materials, the mixture can be dissolved in water and decomposed into carboxylic acid and alcohols in the water, and the curing process of silicate solution is promoted; the addition of a proper amount of rubber auxiliary agent is beneficial to improving the strength of the consolidated body; the silane coupling agent is used for improving the compatibility of organic components and inorganic components in the grouting material; the catalyst is used to adjust the cure rate of the silica sol component.
(5) The preparation method is simple, has strong practicability and is easy to popularize.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 shows the microstructure of the cured slurry prepared in example 1 of the present invention.
FIG. 2 shows the microstructure of the slurry prepared in example 1 of the present invention after injection into crushed rock to form a consolidated body.
FIG. 3 shows the consolidation mechanism of the crushed rock formations with the slurry prepared in example 1 of the present invention.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The silicon-based grouting material suitable for dense and weak stratum reinforcement and impermeability treatment is developed based on the principle of interfacial chemical reaction between silicate, nano silica sol and rock-soil body surface groups, and has the main components of silicate solution and nano silica sol, and a novel stable distribution system is formed by mixing the silicate solution and the nano silica sol, so that SiO is increased 2 For K 2 O、Na 2 The molar ratio of metal oxides such as O and the like effectively promotes the formation of silicon-oxygen bonds (Si-O-Si) in the slurry gel process, thereby improving the gel strength; in addition, after the two main components are mixed, the colloid particles and the soluble orthosilicate oligomer interact to jointly promote the formation of chemical bonds among the particles, so that the gel has the characteristics of low shrinkage and high strength while keeping low viscosity. After the grouting material is injected into a compact and weak stratum, the grouting material can form a three-dimensional network structure taking Si-O-Si bonds as a main body, and the characteristic of high specific surface area of a compact and weak medium can be fully utilized, so that a large number of Si-O-Si bonds are formed by the dehydration condensation of the material and the surface hydroxyl of a rock-soil body, and the cementing efficiency and the consolidation physical strength of the compact and weak stratum are effectively improved.
The invention aims to provide a silicon-based grouting material suitable for dense and weak stratum reinforcement and impervious treatment and a preparation method thereof.
The silicon-based grouting material suitable for dense and weak stratum reinforcement and impermeability treatment is formed by mixing a component A and a component B.
In some embodiments, the component A is composed of the following raw materials in parts by weight: 50-95 parts of nano silica sol solution, 1-20 parts of accelerator, 1-20 parts of rubber auxiliary agent and 0-20 parts of silane coupling agent;
in some embodiments, the nano-silica sol solution has a nano-silica content ranging from 20 to 40% and an average particle size ranging from 7 to 80nm.
In some embodiments, the accelerator is one or more of glyceryl acetate, glyceryl diacetate, glyceryl triacetate;
in some embodiments, the rubber auxiliary agent is one or two of styrene-butadiene emulsion and styrene-acrylic emulsion;
in some embodiments, the silane coupling agent is one or more of an aminosilane, an epoxysilane, a mercaptosilane, and a (meth) acrylate silane;
in some embodiments, the component B is composed of the following raw materials in parts by weight: 80-95 parts of silicate solution, 5-20 parts of water, 0.1-10 parts of catalyst and 0-0.5 part of surfactant.
In some embodiments, the silicate solution is potash water glass with a modulus of 1.8-4.0;
in some embodiments, the catalyst is one or both of sodium chloride and potassium chloride;
in some embodiments, the surfactant is one or both of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
The silicon-based grouting material suitable for dense and weak stratum reinforcement and impermeability treatment has the volume ratio range of the component A to the component B of 1:0.5 to 1:2.
the preparation method of the silicon-based grouting material suitable for dense and weak stratum reinforcement and impermeability treatment comprises the following steps:
firstly, preparing a component A slurry, respectively adding an accelerator, a rubber auxiliary agent and a silane coupling agent into nano silica sol, and uniformly stirring;
step two, preparing a slurry of the component B, measuring a certain amount of catalyst and surfactant, adding water for full dissolution, then adding silicate solution, and stirring uniformly;
thirdly, the slurry of the component A and the slurry of the component B are prepared according to the construction requirement of 1:0.5 to 1:2, mixing in a proportion range to form the silicon-based grouting material suitable for strengthening and impermeability treatment of compact and weak stratum for construction.
In some embodiments, the main performance parameter regulation method of the silicon-based grouting material provided by the invention comprises the following steps:
(1) And (5) regulating and controlling the coagulation time. According to the on-site grouting diffusion range requirement, the setting time is regulated by regulating the content of the accelerator and the catalyst, and generally, the higher the content of the accelerator and the catalyst is, the shorter the setting time is;
(2) And (5) viscosity regulation. The slurry viscosity is controlled by adjusting the proportion of the two components A, B during grouting so as to achieve the optimal injectability. Generally, the content of the component B is reduced, the viscosity of the slurry is reduced, and the diffusion range of the slurry is improved; the content of the component B is increased, and the viscosity of the slurry is also increased, so that the strength of the consolidated body is improved.
The invention will now be described in further detail with reference to the following specific examples, which should be construed as illustrative rather than limiting. The crushed rock used in the embodiment is a typical compact weak surrounding rock medium disclosed in the construction of a diversion engineering bergamot tunnel in Yunnan province of Yunnan, the particle size is small, the cohesive force is low, the crushed rock is extremely easy to permeate and damage under the action of underground water, the crushed rock belongs to a stratum where water burst and gushing are strong, and meanwhile, due to the high compactness, conventional slurry is difficult to inject, and great difficulty is brought to disaster management.
Example 1
The preparation of the silicon-based grouting material suitable for the dense and weak stratum reinforcement and impermeability treatment comprises the following steps:
(1) Preparing a component A: according to the weight portions, 80 portions of nano silicon sol solution, 10 portions of accelerator (containing 5 percent of glyceryl acetate, 50 percent of diacetin and 45 percent of glyceryl triacetate), 10 portions of butylbenzene emulsion and 2 portions of silane coupling agent KH550 are taken, and are evenly stirred after being mixed.
(2) And (3) preparing a component B: according to the weight portions, 10 portions of water, 0.4 portion of sodium chloride and 0.05 portion of sodium dodecyl benzene sulfonate are taken and evenly stirred to obtain clear solution, and 90 portions of potash water glass are added and evenly stirred.
(3) The A, B components are fully stirred and uniformly mixed according to the proportion of 1:1, and can be used for grouting.
Through testing, the initial setting time of the material is 19min, crushed rock is screened, mixed with slurry, and the strength of the crushed rock concretion is 1.15MPa through a uniaxial compression test after 1 d.
Example 2
The preparation of the silicon-based grouting material suitable for the dense and weak stratum reinforcement and impermeability treatment comprises the following steps:
(1) Preparing a component A: according to the weight portions, 80 portions of nano silicon sol solution, 8 portions of accelerator (containing 5 percent of glyceryl acetate, 50 percent of diacetin and 45 percent of glyceryl triacetate), 5 portions of butylbenzene emulsion and 2 portions of silane coupling agent KH550 are taken, and are evenly stirred after being mixed.
(2) And (3) preparing a component B: according to the weight portions, 10 portions of water, 0.4 portion of sodium chloride and 0.05 portion of sodium dodecyl benzene sulfonate are taken and evenly stirred to obtain clear solution, 90 portions of potash water glass are added and evenly stirred again.
(3) The A, B components are fully stirred and uniformly mixed according to the proportion of 1:1, and can be used for grouting.
Through testing, the initial setting time of the material is 24min, crushed rock is screened and mixed with slurry, and after 1d, the strength of the crushed rock concretion is 1.01MPa through a uniaxial compression test.
Example 3
The preparation of the silicon-based grouting material suitable for the dense and weak stratum reinforcement and impermeability treatment comprises the following steps:
(1) Preparing a component A: according to the weight portions, 80 portions of nano silicon sol solution, 6 portions of accelerator (containing 5 percent of glyceryl acetate, 50 percent of diacetin and 45 percent of glyceryl triacetate), 10 portions of butylbenzene emulsion and 2 portions of silane coupling agent KH550 are taken, and are evenly stirred after being mixed.
(2) And (3) preparing a component B: according to the weight portions, 10 portions of water, 0.4 portion of sodium chloride and 0.05 portion of sodium dodecyl benzene sulfonate are taken and evenly stirred to obtain clear solution, 90 portions of potash water glass are added and evenly stirred again.
(3) The A, B components are fully stirred and uniformly mixed according to the proportion of 1:1, and can be used for grouting.
Through testing, the initial setting time of the material is 30min, crushed rock is screened and mixed with slurry, and after 1d, the strength of the crushed rock concretion is measured to be 0.6MPa through a single-shaft compression test.
Example 4
The preparation of the silicon-based grouting material suitable for the dense and weak stratum reinforcement and impermeability treatment comprises the following steps:
(1) Preparing a component A: according to the weight portions, 80 portions of nano silicon sol solution, 10 portions of accelerator (containing 5 percent of glyceryl acetate, 50 percent of diacetin and 45 percent of glyceryl triacetate), 10 portions of butylbenzene emulsion and 2 portions of silane coupling agent KH550 are taken, and are evenly stirred after being mixed.
(2) And (3) preparing a component B: according to the weight portions, 10 portions of water, 0.4 portion of sodium chloride and 0.05 portion of sodium dodecyl benzene sulfonate are taken and evenly stirred to obtain clear solution, 80 portions of potash water glass are added and evenly stirred again.
(3) The A, B components are fully stirred and uniformly mixed according to the proportion of 1:1, and can be used for grouting.
Through testing, the initial setting time of the material is 18min, crushed rock is screened and mixed with slurry, and after 1d, the strength of the crushed rock concretion is measured to be 0.95MPa through a single-shaft compression test.
Example 5
The preparation of the silicon-based grouting material suitable for the dense and weak stratum reinforcement and impermeability treatment comprises the following steps:
(1) Preparing a component A: according to the weight portions, 80 portions of nano silicon sol solution, 10 portions of accelerator (containing 5 percent of glyceryl acetate, 50 percent of diacetin and 45 percent of glyceryl triacetate), 10 portions of butylbenzene emulsion and 2 portions of silane coupling agent KH550 are taken, and are evenly stirred after being mixed.
(2) And (3) preparing a component B: according to the weight portions, 10 portions of water, 0.4 portion of sodium chloride and 0.05 portion of sodium dodecyl benzene sulfonate are taken and evenly stirred to obtain clear solution, 70 portions of potash water glass are added and evenly stirred again.
(3) The A, B components are fully stirred and uniformly mixed according to the proportion of 1:1, and can be used for grouting.
Through testing, the initial setting time of the material is 21min, crushed rock is screened and mixed with slurry, and after 1d, the strength of the crushed rock concretion is measured to be 0.85MPa through a single-shaft compression test.
Example 6
The preparation of the silicon-based grouting material suitable for the dense and weak stratum reinforcement and impermeability treatment comprises the following steps:
(1) Preparing a component A: according to the weight portions, 80 portions of nano silicon sol solution, 20 portions of accelerator (containing 5 percent of glyceryl acetate, 50 percent of diacetin and 45 percent of glyceryl triacetate), 10 portions of butylbenzene emulsion and 2 portions of silane coupling agent KH550 are taken, and are evenly stirred after being mixed.
(2) And (3) preparing a component B: according to the weight portions, 10 portions of water and 0.4 portion of sodium chloride are taken and evenly stirred to obtain clear solution, 90 portions of potash water glass are added and evenly stirred again.
(3) The A, B components are fully stirred and uniformly mixed according to the proportion of 1:2, and can be used for grouting.
Through testing, the initial setting time of the material is 14min, crushed rock is screened, mixed with slurry, and the strength of the crushed rock concretion is 1.12MPa through a uniaxial compression test after 1 d.
Example 7
The preparation of the silicon-based grouting material suitable for the dense and weak stratum reinforcement and impermeability treatment comprises the following steps:
(1) Preparing a component A: according to the weight portions, 80 portions of nano silicon sol solution, 12 portions of accelerator (containing 5 percent of glyceryl acetate, 50 percent of diacetin and 45 percent of glyceryl triacetate), 10 portions of butylbenzene emulsion and 2 portions of silane coupling agent KH550 are taken, and are evenly stirred after being mixed.
(2) And (3) preparing a component B: according to the weight portions, 10 portions of water, 0.8 portion of sodium chloride and 0.05 portion of sodium dodecyl benzene sulfonate are taken and evenly stirred to obtain clear solution, 80 portions of potash water glass are added and evenly stirred again.
(3) The A, B components are fully stirred and uniformly mixed according to the proportion of 1:1, and then the grouting material can be used for grouting.
Through testing, the initial setting time of the material is 17min, crushed rock is screened, mixed with slurry, and after 1d, the strength of the crushed rock concretion is 1.04MPa through a uniaxial compression test.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A silicon-based grouting material suitable for dense and weak stratum reinforcement and impervious treatment, comprising: the volume ratio of the component A to the component B is 1:0.5 to 1:2;
the component A consists of the following raw materials in parts by weight: 50-95 parts of nano silica sol solution, 1-20 parts of accelerator, 1-20 parts of rubber auxiliary agent and 0-20 parts of silane coupling agent;
the component B consists of the following raw materials in parts by weight: 80-95 parts of silicate solution, 5-20 parts of water, 0.1-10 parts of catalyst and 0-0.5 part of surfactant.
2. The silica-based grouting material for dense and weak stratum reinforcement and permeation resistance treatment according to claim 1, wherein the nano silica content in the nano silica sol solution ranges from 20 to 40%, and the average particle size is 7 to 80nm.
3. The silica-based grouting material for tight and weak formation strengthening and impermeability treatment according to claim 1, wherein the accelerator is at least one of glyceryl acetate, glyceryl diacetate, glyceryl triacetate.
4. The silica-based grouting material for reinforcing and impervious treatment of a tight and weak stratum according to claim 1, wherein the rubber auxiliary agent is one or two of styrene-butadiene emulsion and styrene-acrylic emulsion.
5. The silica-based grouting material for tight and weak formation reinforcement and permeation resistance treatment according to claim 1, wherein the silane coupling agent is at least one of aminosilane, epoxysilane, mercaptosilane and (meth) acrylate silane.
6. The silica-based grouting material for strengthening and impermeability treatment of tight and weak formations according to claim 1, wherein the silicate solution is potash water glass with a modulus of 1.8-4.0.
7. The silica-based grouting material for tight and weak formation reinforcement and permeation resistance treatment according to claim 1, wherein the catalyst is one or both of sodium chloride and potassium chloride.
8. The silica-based grouting material for tight and weak formation reinforcement and permeation resistance treatment according to claim 1, wherein the surfactant is one or both of sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
9. The preparation method of the silicon-based grouting material suitable for the dense and weak stratum reinforcement and impermeability treatment is characterized by comprising the following steps:
respectively adding an accelerator, a rubber auxiliary agent and a silane coupling agent into the nano silica sol, and uniformly mixing to obtain a component A slurry;
dissolving a catalyst and a surfactant in water, adding a silicate solution, and uniformly mixing to obtain a B-component slurry;
and (3) the slurry of the component A and the slurry of the component B are prepared according to the construction requirement according to the following ratio of 1:0.5 to 1:2, mixing in a proportion range to form the silicon-based grouting material suitable for strengthening and impermeability treatment of the compact and weak stratum.
10. Use of a grouting material according to any one of claims 1-8 in tunnel and underground engineering construction.
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