CN101607807A - A kind of polyurethane cement composite grouting material - Google Patents
A kind of polyurethane cement composite grouting material Download PDFInfo
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- CN101607807A CN101607807A CN 200910101210 CN200910101210A CN101607807A CN 101607807 A CN101607807 A CN 101607807A CN 200910101210 CN200910101210 CN 200910101210 CN 200910101210 A CN200910101210 A CN 200910101210A CN 101607807 A CN101607807 A CN 101607807A
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- polyurethane
- grouting material
- cement composite
- composite grouting
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
- C04B40/0641—Mechanical separation of ingredients, e.g. accelerator in breakable microcapsules
- C04B40/065—Two or more component mortars
-
- 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
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
- C04B2111/00706—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like around pipelines or the like
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of polyurethane cement composite grouting material.Goal of the invention provides a kind of polyurethane cement composite grouting material, is intended to urethane slurries and grout are re-dubbed composite grouting material, brings into play both chiefs, and is both cost-saved, helps the environmental protection of constructing again, and can reach the purpose of quick, effective water blockoff.The technical scheme that addresses this problem is: polyurethane cement composite grouting material, it is characterized in that being made up of the two components of A, B, composition of raw materials is as follows respectively: A component: oil soluble polyurethane injection material 100 weight parts, catalyzer 1～10 weight part, silane coupling agent 0.5～2 weight part; B component: cement 100～200 weight parts, water 30～100 weight parts, water reducer 0～10 weight part, tensio-active agent 1～5 weight part.The present invention is applicable to the shutoff of big flow water burst.
Description
Technical field
The present invention relates to a kind of polyurethane cement composite grouting material.Be applicable to the shutoff of big flow water burst, the filling and the reinforcing in rock and concrete crack, building foundations such as dam, bridge, building reinforce and soil stabilization is handled.
Background technology
Grouting technique is divided into by the difference of forming slurry material: cementation process, sand-cement slurry grouting, clay grouting, cement clay grouting, cement-sodium silicate grouting and macromolecular solution chemical grouting.Up to now, cement is still most widely used basic material in the grouting work.During grouting treatment, should at first consider to select for use cement grouting material, demonstration is thought when adopting cement grouting material not solve engineering problem after deliberation, just considers to select for use chemistry to irritate material.This be because: (1) cement grouting material can satisfy the requirement of consolidation grouting, joint grouting and the curtain grouting of common engineering.(2) cement is inorganics, and its main component is the oxide compound of silicon, calcium, aluminium, iron, magnesium, sodium, potassium, manganese etc., does not have the toxic chemical substance that causes environmental pollution in the cement grouting material component.(3) the cement grouting material price made of ordinary Portland cement is more much lower than chemical grouting material., because cement grouting material metal particles section bar material, can not obtain satisfied effect to the processing of some micro-cracks.In addition, to the leakage area of certain flow rate is arranged, priming charge mud is easy to be diluted by water or wash away before solidifying.The application that these all make cementation process has been subjected to certain restriction.Chemical grouting material is a true solution, and viscosity is low, and concrete castability is good, and seepage force is strong, and filling is closely knit, good waterproof performance, and the fixed back of slurry material intensity height, and the gel time degree of amplitude modulation is big, and bonding strength is also high.Therefore, to the unsatisfactory grouting works of cement grouting material, multiselect chemical grouting material.At present the kind of chemical grouting material is a lot, as epoxy, first coagulate, third coagulate, acrylate, acidity and alkaline water glass, water-soluble and oil soluble polyurethane, urea-formaldehyde resin, chrome lignin etc., but also in continuous increase.Wherein the urethane injection material is the important injection material that is widely used in rising in the engineerings such as water conservancy, water power, tunnel, subway, mine, people's air defense, industry and covil construction antiseepage, leak stopping, reinforcement effect.
Polyurethane-reinforcement is irritated material oil soluble (also claiming hydrophobic nature) and water-soluble (also claiming wetting ability) two big classes, free-NC0 group content height in the oil soluble polyurethane, under the condition of selecting appropriate catalyst, react rapidly after meeting water, will foamed solidification in several seconds～tens seconds, in confined conditions, a few hours just can generate ultimate compression strength and reach the above induration of 20MPa, and the big flow water burst of blocking high-pressure proves effective especially.Therefore leak to high pressure is especially big, it should be a preferred material, but it is a macromolecular material, compares with the mineral-type cement material, and it is high that its price is wanted.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of polyurethane cement composite grouting material is provided, be intended to urethane slurries and grout are re-dubbed composite grouting material, bring into play both chiefs, both cost-saved, help the environmental protection of constructing again, and can reach the purpose of quick, effective water blockoff.
The technical solution adopted in the present invention is: polyurethane cement composite grouting material, it is characterized in that forming by the two components of A, B, and composition of raw materials is as follows respectively:
The A component:
Oil soluble polyurethane injection material 100 weight parts
Catalyzer 1～10 weight part
Silane coupling agent 0.5～2 weight part
The B component:
Cement 100～200 weight parts
Water 30～100 weight parts
Water reducer 0～10 weight part
Tensio-active agent 1～5 weight part;
A component raw material stirred in proportion is made into A liquid, and the slurry storing tank of packing into is put into B component raw material in proportion the grout mixing apparatus again and stirred and be made into B liquid, another slurry storing tank of packing into;
With two inlet pipes of automatic variable grouting equipment respectively hand go in two slurry storing tanks, in A liquid: the cooperation ratio of B liquid=1: 0.5～3 is regulated grout absorption, the mixing process of two kinds of slurries can realize at the bottom of aperture or hole in the slip casting process, pass through static mixing device, two components are mixed, and deliver to indication position, bonding part by pressure pump.
Described oil soluble polyurethane injection material is usual vehicle type or environment-friendly solvent type polyurethane injection material, in the slurries content of isocyano group 15～22%, viscosity 150～450mPas.
Described catalyzer is independent tertiary amine catalyst or tertiary amine catalyst and organotin catalysts compound catalyzer mutually.
Described silane coupling agent is the 3-glycidyl ether oxygen propyl trimethoxy silicane.
Described cement is ordinary Portland cement.
Water reducer is a naphthalene series high-efficiency water-reducing agent.
Described tensio-active agent is an aniorfic surfactant.
The invention has the beneficial effects as follows: this injection material is compared chance water and can be reacted rapidly with Portland cement class injection material, quick solidifying, and the concretion body strength height, effective to the big flow water burst of blocking high-pressure, and overcome the shortcoming that grout easily runs off under moving water state; And compare with traditional urethane injection material, it both can save cost, and the environmental protection that helps again constructing makes the intensity of induration be improved again simultaneously, and therefore effect is more obvious when being used for the strengthening of foundation processing.Cement composite grouting material of the present invention is highly suitable for the shutoff of the big flow water burst in water conservancy, water power, tunnel, subway, mine, people's air defense, industry and the civil building engineering, and the quick reinforcing of rock stratum, ground and soil stabilization are handled.
Embodiment
Embodiment 1:
This routine polyurethane cement composite grouting material proportion of raw materials is:
The A component:
Oil soluble polyurethane injection material (trade mark: HK-9105, viscosity: 150～300) 100 weight parts
N-methylmorpholine+dibutyltin dilaurate 2 weight parts
3-glycidyl ether oxygen propyl trimethoxy silicane 1 weight part
The B component:
42.5 number ordinary Portland cement 100 weight parts
Water 30 weight parts
Sodium dodecylbenzene sulfonate 1 weight part.
A component raw material stirred in proportion is made into A liquid, and the slurry storing tank of packing into is put into B component raw material in proportion the grout mixing apparatus again and stirred and be made into B liquid, another slurry storing tank of packing into;
With automatic variable grouting equipment (biliquid pump, this equipment is equipment commonly used in this area) two inlet pipes respectively hand go in two slurry storing tanks, in A liquid: the cooperation ratio of B liquid=1: 1 is regulated grout absorption, the mixing process of two kinds of slurries can realize at the bottom of aperture or hole in the slip casting process, (this device also is the equipment of using always by SK type static mixing device, as the patent No. is 200620106928.9 disclosed mixing cementers), two components are mixed, and deliver to indication position, bonding part by pressure pump.
Oil soluble polyurethane injection material in this example in the A component is existing commercially available commodity on market at present, as HK-9105 and HK-9106 oil soluble polyurethane injection material that Hangzhou state TV university dam safety technique company limited produces, catalyst n-methylmorpholine in the A component and dibutyltin dilaurate are each 1 weight part.Do not use water reducer in the B component.
The technical indicator of the product that present embodiment obtains is as follows:
| Performance | Index |
| The foaming time (s) | ????30 |
| End the bubble time (s) | ????85 |
| Free foaming multiple (doubly) | ????25 |
| 4hr ultimate compression strength (MPa) (air tight condition compacted under) | ????25.5 |
Embodiment 2:
This routine polyurethane cement composite grouting material proportion of raw materials is:
The A component:
Oil soluble polyurethane injection material (trade mark: HK-9105, viscosity: 150～300) 100 weight parts
N-methylmorpholine+stannous octoate 4 weight parts
3-glycidyl ether oxygen propyl trimethoxy silicane 1 weight part
The B component:
42.5 number ordinary Portland cement 100 weight parts
Water 50 weight parts
Sodium dodecylbenzene sulfonate 1 weight part.
This routine blending process is identical with embodiment 1 with the equipment that relates to, and the cooperation ratio is pressed A liquid: B liquid=1: 2 adjusting grout absorption.Catalyst n-methylmorpholine in the A component+stannous octoate is each 2 weight part.Do not use water reducer in the B component.
The technical indicator of the product that present embodiment obtains is as follows:
| Performance | Index |
| The foaming time (s) | ????18 |
| End the bubble time (s) | ????40 |
| Free foaming multiple (doubly) | ????23 |
| 4hr ultimate compression strength (MPa) | ????15.3 |
Embodiment 3:
This routine polyurethane cement composite grouting material proportion of raw materials is:
The A component:
Oil soluble polyurethane injection material (trade mark: HK-9106, viscosity: 150～300) 100 weight parts
N-methylmorpholine+dibutyltin dilaurate 2 weight parts
3-glycidyl ether oxygen propyl trimethoxy silicane 1 weight part
The B component:
42.5 number ordinary Portland cement 100 weight parts
Water 30 weight parts
Water reducer (trade mark: FDN-C, beta-naphthalenesulfonic-acid salt formaldehyde condensation products) 0.5 weight part
Sodium dodecylbenzene sulfonate 1 weight part.
This routine blending process is identical with embodiment 1 with the equipment that relates to, and the cooperation ratio is pressed A liquid: B liquid=1: 1 adjusting grout absorption.Catalyst n-methylmorpholine in the A component+dibutyltin dilaurate is each 1 weight part.
The technical indicator of the product that present embodiment obtains is as follows:
| Performance | Index |
| The foaming time (s) | ????33 |
| End the bubble time (s) | ????98 |
| Free foaming multiple (doubly) | ????26 |
| 4hr ultimate compression strength (MPa) | ????28.5 |
Embodiment 4:
This routine polyurethane cement composite grouting material proportion of raw materials is:
The A component:
Oil soluble polyurethane injection material (trade mark: HK-9105, viscosity: 150～300) 100 weight parts
Triethylenediamine 1 weight part
3-glycidyl ether oxygen propyl trimethoxy silicane 1 weight part
The B component:
42.5 number ordinary Portland cement 100 weight parts
Water 30 weight parts
Water reducer (trade mark: FDN-C, beta-naphthalenesulfonic-acid salt formaldehyde condensation products) 1 weight part
Sodium dodecylbenzene sulfonate 1 weight part.
This routine blending process is identical with embodiment 1 with the equipment that relates to, and the cooperation ratio is pressed A liquid: B liquid=1: 0.5 adjusting grout absorption.
Embodiment 5:
This routine polyurethane cement composite grouting material proportion of raw materials is:
The A component:
Oil soluble polyurethane injection material (trade mark: HK-9106, viscosity: 150～300) 100 weight parts
N, N-dimethylcyclohexylamine 10 weight parts
3-glycidyl ether oxygen propyl trimethoxy silicane 2 weight parts
The B component:
42.5 number ordinary Portland cement 200 weight parts
Water 100 weight parts
Water reducer (trade mark: FDN-C, beta-naphthalenesulfonic-acid salt formaldehyde condensation products) 10 weight parts
Sodium dodecylbenzene sulfonate 5 weight parts.
This routine blending process is identical with embodiment 1 with the equipment that relates to, and the cooperation ratio is pressed A liquid: B liquid=1: 3 adjusting grout absorption.
Embodiment 6:
This routine polyurethane cement composite grouting material proportion of raw materials is:
The A component:
Oil soluble polyurethane injection material (trade mark: HK-9105, viscosity: 150～450) 100 weight parts
N, N '-diethyl-2-methylpiperazine 5 weight parts
3-glycidyl ether oxygen propyl trimethoxy silicane 1 weight part
The B component:
42.5 number ordinary Portland cement 150 weight parts
Water 65 weight parts
Water reducer (trade mark: FDN-C, beta-naphthalenesulfonic-acid salt formaldehyde condensation products) 5 weight parts
Sodium dodecylbenzene sulfonate 3 weight parts.
This routine blending process is identical with embodiment 1 with the equipment that relates to, and the cooperation ratio is pressed A liquid: B liquid=1: 1.5 adjusting grout absorption.
Polyurethane cement composite grouting material of the present invention has following characteristics:
1) reaction speed is fast: react rapidly, foam, solidify after meeting water. Reaction time can be regulated by the consumption of catalyst, generally can be controlled in tens of seconds to several minutes to solidify, and reaches the purpose of quick sealing.
2) consolidation strength is high: during in confined conditions moulding, concretion body strength reaches as high as more than the 25MPa.
3) cost is low: compare with polyurethane grouting material, cost savings 30～50% can reduce construction costs greatly.
4) product environmental protection: product is nontoxic, to human body and environmental friendliness.
Claims (7)
1, a kind of polyurethane cement composite grouting material is characterized in that being made up of the two components of A, B, and composition of raw materials is as follows respectively:
The A component:
Oil soluble polyurethane injection material 100 weight parts
Catalyzer 1～10 weight part
Silane coupling agent 0.5～2 weight part
The B component:
Cement 100～200 weight parts
Water 30～100 weight parts
Water reducer 0～10 weight part
Tensio-active agent 1～5 weight part;
A component raw material stirred in proportion is made into A liquid, and the slurry storing tank of packing into is put into B component raw material in proportion the grout mixing apparatus again and stirred and be made into B liquid, another slurry storing tank of packing into;
With two inlet pipes of automatic variable grouting equipment respectively hand go in two slurry storing tanks, in A liquid: the cooperation ratio of B liquid=1: 0.5～3 is regulated grout absorption, the mixing process of two kinds of slurries can realize at the bottom of aperture or hole in the slip casting process, pass through static mixing device, two components are mixed, and deliver to indication position, bonding part by pressure pump.
2, polyurethane cement composite grouting material according to claim 1, it is characterized in that described oil soluble polyurethane injection material is usual vehicle type or environment-friendly solvent type polyurethane injection material, the content of isocyano group is 15～22% in the slurries, viscosity 150～450mPas.
3, polyurethane cement composite grouting material according to claim 1 is characterized in that described catalyzer is independent tertiary amine catalyst or tertiary amine catalyst and organotin catalysts compound catalyzer mutually.
4, polyurethane cement composite grouting material according to claim 1 is characterized in that described silane coupling agent is the 3-glycidyl ether oxygen propyl trimethoxy silicane.
5, polyurethane cement composite grouting material according to claim 1 is characterized in that described cement is ordinary Portland cement.
6, polyurethane cement composite grouting material according to claim 1 is characterized in that described water reducer is a naphthalene series high-efficiency water-reducing agent.
7, polyurethane cement composite grouting material according to claim 1 is characterized in that described tensio-active agent is an aniorfic surfactant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101012109A CN101607807B (en) | 2009-07-22 | 2009-07-22 | Polyurethane cement composite grouting material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101012109A CN101607807B (en) | 2009-07-22 | 2009-07-22 | Polyurethane cement composite grouting material |
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| Publication Number | Publication Date |
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| CN101607807A true CN101607807A (en) | 2009-12-23 |
| CN101607807B CN101607807B (en) | 2012-08-22 |
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| CN2009101012109A Active CN101607807B (en) | 2009-07-22 | 2009-07-22 | Polyurethane cement composite grouting material |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079862A (en) * | 2010-12-21 | 2011-06-01 | 中国建筑科学研究院 | Single-component oil-soluble polyurethane grouting material, raw materials and preparation method thereof |
| CN105332719A (en) * | 2015-08-10 | 2016-02-17 | 江苏鼎达建筑新技术有限公司 | Cement-polyurethane composite grouting process capable of blocking water fast |
| CN107382208A (en) * | 2017-08-22 | 2017-11-24 | 中国电建集团中南勘测设计研究院有限公司 | A kind of quick setting early strength mixed serum |
| CN109734870A (en) * | 2018-12-26 | 2019-05-10 | 哈尔滨工程大学 | A kind of preparation method of water-fast pressure-resistant plugging material |
| CN109824328A (en) * | 2019-04-03 | 2019-05-31 | 辽宁新发展公路科技养护有限公司 | A kind of complex coagulation soil surface macromolecule composite grouting material and preparation method thereof |
| CN110256020A (en) * | 2019-07-26 | 2019-09-20 | 河南理工大学 | A kind of gas sealing material and preparation method thereof for underground coal mine |
| CN112694314A (en) * | 2021-01-29 | 2021-04-23 | 中国地质大学（武汉） | Grouting material for reinforcing rock mass fracture and preparation method thereof |
| CN112832198A (en) * | 2021-02-01 | 2021-05-25 | 四川共拓岩土科技股份有限公司 | Seepage-proofing grouting method for covering layer of water storage dam foundation |
| CN113683369A (en) * | 2021-10-08 | 2021-11-23 | 山东科技大学 | Strong-permeability stratum double-liquid grouting new material in flowing water environment and preparation method thereof |
| CN115448669A (en) * | 2022-10-12 | 2022-12-09 | 四川童燊防水工程有限公司 | Preparation method of environment-friendly novel waterproof plugging grouting material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036277C (en) * | 1992-08-17 | 1997-10-29 | 化学工业部海洋涂料研究所 | Production of chemical grouting material from isocyanate residue |
-
2009
- 2009-07-22 CN CN2009101012109A patent/CN101607807B/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079862A (en) * | 2010-12-21 | 2011-06-01 | 中国建筑科学研究院 | Single-component oil-soluble polyurethane grouting material, raw materials and preparation method thereof |
| CN102079862B (en) * | 2010-12-21 | 2013-02-27 | 中国建筑科学研究院 | Single-component oil-soluble polyurethane grouting material, raw materials and preparation method thereof |
| CN105332719A (en) * | 2015-08-10 | 2016-02-17 | 江苏鼎达建筑新技术有限公司 | Cement-polyurethane composite grouting process capable of blocking water fast |
| CN107382208A (en) * | 2017-08-22 | 2017-11-24 | 中国电建集团中南勘测设计研究院有限公司 | A kind of quick setting early strength mixed serum |
| CN109734870B (en) * | 2018-12-26 | 2021-09-28 | 哈尔滨工程大学 | Preparation method of water-resistant pressure-resistant plugging material |
| CN109734870A (en) * | 2018-12-26 | 2019-05-10 | 哈尔滨工程大学 | A kind of preparation method of water-fast pressure-resistant plugging material |
| CN109824328A (en) * | 2019-04-03 | 2019-05-31 | 辽宁新发展公路科技养护有限公司 | A kind of complex coagulation soil surface macromolecule composite grouting material and preparation method thereof |
| CN110256020A (en) * | 2019-07-26 | 2019-09-20 | 河南理工大学 | A kind of gas sealing material and preparation method thereof for underground coal mine |
| CN112694314A (en) * | 2021-01-29 | 2021-04-23 | 中国地质大学（武汉） | Grouting material for reinforcing rock mass fracture and preparation method thereof |
| CN112694314B (en) * | 2021-01-29 | 2022-06-24 | 中国地质大学（武汉） | Grouting material for reinforcing rock mass crack and preparation method thereof |
| CN112832198A (en) * | 2021-02-01 | 2021-05-25 | 四川共拓岩土科技股份有限公司 | Seepage-proofing grouting method for covering layer of water storage dam foundation |
| CN113683369A (en) * | 2021-10-08 | 2021-11-23 | 山东科技大学 | Strong-permeability stratum double-liquid grouting new material in flowing water environment and preparation method thereof |
| CN113683369B (en) * | 2021-10-08 | 2022-05-31 | 山东科技大学 | Strong-permeability stratum double-liquid grouting new material in flowing water environment and preparation method thereof |
| CN115448669A (en) * | 2022-10-12 | 2022-12-09 | 四川童燊防水工程有限公司 | Preparation method of environment-friendly novel waterproof plugging grouting material |
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| Publication number | Publication date |
|---|---|
| CN101607807B (en) | 2012-08-22 |
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Inventor after: Bao Yinhong Inventor after: Lin Zhonghua Inventor after: Du Zhilong Inventor before: Bao Yinhong Inventor before: Lin Zhonghua Inventor before: Du Zhilong |