CN115521103B - Underwater grouting plugging material and preparation method thereof - Google Patents

Underwater grouting plugging material and preparation method thereof Download PDF

Info

Publication number
CN115521103B
CN115521103B CN202211202359.8A CN202211202359A CN115521103B CN 115521103 B CN115521103 B CN 115521103B CN 202211202359 A CN202211202359 A CN 202211202359A CN 115521103 B CN115521103 B CN 115521103B
Authority
CN
China
Prior art keywords
water
parts
cement
powder
underwater grouting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202211202359.8A
Other languages
Chinese (zh)
Other versions
CN115521103A (en
Inventor
邱诚
黄小娜
邱士安
麻东亚
柏忠园
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Youqing Construction Repair Technology Co ltd
Chengdu Technological University CDTU
Original Assignee
Sichuan Youqing Construction Repair Technology Co ltd
Chengdu Technological University CDTU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sichuan Youqing Construction Repair Technology Co ltd, Chengdu Technological University CDTU filed Critical Sichuan Youqing Construction Repair Technology Co ltd
Priority to CN202211202359.8A priority Critical patent/CN115521103B/en
Publication of CN115521103A publication Critical patent/CN115521103A/en
Application granted granted Critical
Publication of CN115521103B publication Critical patent/CN115521103B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • 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
    • C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00293—Materials impermeable to liquids
    • 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
    • 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
    • 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
    • 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

Abstract

The underwater grouting plugging material is mainly prepared from redispersible rubber powder, cement-based permeable crystallization active master batch, 1788 polyvinyl alcohol powder, high-efficiency water reducing agent, micro-expanding agent, concrete flocculant and quartz powder, and has good flowing performance and hole coverage after entering high-pressure flowing water by purposefully controlling the adding proportion of each raw material and a specific preparation process, can be coagulated in a short time, can realize quick improvement of strength, stably limit expansion performance and shrinkage resistance, has high density after hardening, and can realize excellent plugging performance.

Description

Underwater grouting plugging material and preparation method thereof
Technical Field
The invention relates to the field of underwater grouting plugging materials, in particular to an underwater grouting plugging material and a preparation method thereof.
Background
Grouting and water plugging means that an artificially prefabricated grouting and plugging material is conveyed into a rock pore, a crack, a karst cave or a well lane by pressure through a pipeline, so that the grouting and plugging material expands, solidifies and hardens, and the purposes of blocking a water source or reinforcing a stratum and plugging the well lane are achieved. The common inorganic grouting plugging material mainly comprises cement, a water reducing agent and a plurality of accelerating agents, and can realize a certain plugging effect in a normal-pressure still water environment.
However, under special conditions, for example, the depth of the sewage treatment tank can reach several meters or even tens meters, when the sewage treatment tank runs, sewage is in a stirring or aeration state, namely, under a high-pressure water flowing condition, when the bottom of the tank leaks, if the tank is stopped to treat the leakage, the treatment time is increased firstly, and the continuous running of sewage treatment is influenced secondly; for example, when water burst occurs in an aquifer in underground operation, it is very difficult to construct a sealed slurry stopping pad, and the problem of high-pressure dynamic water grouting is unavoidable.
However, when the conventional plugging material is used for plugging under the underwater condition of high-pressure running water, the dispersibility is poor, the material is easy to wash, the flowing property is poor, ideal hole spreading cannot be realized, the density is low after hardening, and the plugging effect is poor.
Disclosure of Invention
The invention aims at: aiming at the problem that the inorganic grouting plugging material in the prior art has poor plugging effect when being used for plugging under high pressure and dynamic water conditions, the underwater grouting plugging material and the preparation method thereof are provided, and the underwater grouting plugging material prepared by adopting the specific method has good flowing performance after entering high-pressure flowing water, good hole coverage, can be coagulated in a short time, can realize quick improvement of strength, stably limit expansion performance and shrinkage resistance, has high density after hardening, and can realize excellent plugging performance.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the underwater grouting plugging material is mainly prepared from the following raw materials in parts by weight:
1 to 5 parts of redispersible rubber powder; 5-15 parts of cement; 2-8 parts of cement-based infiltration crystallization active master batch; 1788 polyvinyl alcohol powder 2-5; 1 to 3 parts of high-efficiency water reducer; 2-4 parts of micro-expanding agent; 2-4 parts of a concrete flocculant; 0.1 to 0.5 part of quartz powder and 2 to 15 parts of water.
The underwater grouting plugging material provided by the invention is mainly prepared from redispersible rubber powder, cement-based permeable crystallization active master batch, 1788 polyvinyl alcohol powder, high-efficiency water reducing agent, micro-expanding agent, concrete flocculant and quartz powder, and has good flowing performance and good hole coverage after entering high-pressure fluidity water by purposefully controlling the adding proportion of each raw material and a specific preparation process, can be coagulated in a short time, can realize quick improvement of strength, stably limits expansion performance and shrinkage resistance, has high compactness after hardening, and can realize excellent plugging performance.
Wherein, the redispersible rubber powder and the cement-based permeable crystallization active master batch are mixed with the polyvinyl alcohol rubber powder by taking water as a carrier to generate a relatively stable membranous substance, so as to prevent the polyvinyl alcohol from being dissolved when meeting water dispersion; after grouting, the film is covered in the inner hole cavity of the concrete or brick body, and the polymer resin adhesive film can not be secondarily dispersed after meeting water, thus preventing the invasion of water and improving the impermeability. The cement, the concrete flocculant, the high-efficiency water reducing agent and the quartz powder are uniformly mixed under the action of water, the rheological property and the plasticity of the cementing material are greatly improved by the concrete flocculant and the high-efficiency water reducing agent, and quartz has the performances of compression resistance, fracture resistance, impermeability, corrosion resistance, impact resistance and wear resistance, has the effects of water retention, segregation and bleeding prevention, and pumping resistance reduction, and remarkably prolongs the service life of the grouting material.
Further, the environment of high-pressure flowing water refers to an environment with water depth not less than 5m and flow speed not less than 0.2 m/s. Preferably, the environment of high-pressure flowing water means that the water depth is 5 m-20 m and the flow rate is 0.2 m/s-1 m/s. Further, the cement is Portland cement. Preferably, the cement is at least one of p.042.5 cement and p.052.5 cement.
Further, the 1788 polyethylene powder has a particle size of 20 to 100 μm. Preferably, the particle size of the 1788 polyethylene powder is 20-80 μm. Further, the particle size of the quartz powder is 10-100 mu m. Preferably, the particle size of the quartz powder is 10-80 μm. More preferably 20 to 80. Mu.m. The quartz has the performances of compression resistance, fracture resistance, impermeability, corrosion resistance, impact resistance and wear resistance, has the functions of water retention, segregation and bleeding prevention, and pumping resistance reduction, and remarkably prolongs the service life of the grouting material.
Further, the high-efficiency water reducer is at least one of powder polycarboxylate and polycarboxylic acid high-performance water reducer.
Further, the micro-expanding agent is at least one of calcium sulfoaluminate micro-expanding agent, calcium oxide micro-expanding agent and magnesium oxide micro-expanding agent.
Further, the underwater grouting plugging material is mainly prepared from the following raw materials in parts by weight:
1 to 3 parts of redispersible rubber powder; 5-12 parts of cement; 2-6 parts of cement-based infiltration crystallization active master batch; 1788 polyvinyl alcohol powder 2-5; 1 to 3 parts of high-efficiency water reducer; 2-4 parts of micro-expanding agent; 2-4 parts of a concrete flocculant; 0.1 to 0.4 part of quartz powder and 2 to 10 parts of water.
Furthermore, the water reducing rate of the high-efficiency water reducing agent is more than or equal to 30 percent.
Further, the impermeability grade of the micro-expanding agent is more than or equal to P30.
Further, the concrete flocculant does not disperse the slump of concrete for 18-24 cm under water.
Further, the renewable dispersible rubber powder is mainly prepared from the following raw materials in parts by weight:
8-12 parts of water, 0.3-0.8 part of sodium hydroxide and 1-4 parts of polyvinyl acetate; 0.5 to 2 parts of higher fatty acid vinyl ester copolymer, 0.05 to 0.15 part of di (2-ethylhexyl) phthalate.
The redispersible rubber powder consists of polyvinyl acetate and higher fatty acid vinyl ester copolymer rubber powder (Vac/VeoVa), and after being mixed with water, the redispersible rubber powder is emulsified and dispersed in water to reform stable polymeric emulsion; after the polymer emulsion is dispersed in water, a polymer film is formed, various properties of the mixed material are improved, particularly, the redispersible emulsion powder is formed into a film in the inner hole of the concrete or brick body, the polymer resin film cannot be dispersed for the second time after meeting water, the invasion of water is prevented, and the impermeability is improved.
Further, the polyvinyl acetate density was 1.023g/cm 3 ～1.191g/cm 3 And executing national standard quality standard.
Further, the renewable dispersible rubber powder is mainly prepared from the following raw materials in parts by weight:
10 to 12 parts of water, 0.3 to 0.5 part of sodium hydroxide and 1 to 3 parts of polyvinyl acetate; 0.5 to 1.5 parts of higher fatty acid vinyl ester copolymer, 0.05 to 0.1 part of di (2-ethylhexyl) phthalate.
Further, the renewable dispersible rubber powder is mainly prepared by the following method:
s1, adding water, sodium hydroxide and polyvinyl acetate into a reaction kettle, and stirring for 5-10 min; then adding the higher fatty acid vinyl ester copolymer into a reaction kettle and stirring for 15-30 min; then adding di (2-ethylhexyl) phthalate into the reaction kettle, and continuously stirring for 15-30 min to obtain a first material;
step S2, introducing CO into the first material obtained in the step S1 2 Stopping introducing CO until the pH of the mixed solution is below 9 2 Obtaining a second material;
and S3, pumping the second material obtained in the step S2 into a spray box, and discharging the renewable dispersible rubber powder after the second material passes through an atomizing nozzle, an anti-scaling layer and a drying layer.
Further, in the step S3, the anti-scaling layer contains calcium carbonate and silica; the dried layer contains calcium sulfate.
Further, the weight ratio of the redispersible rubber powder to the cement-based permeable crystallization active masterbatch is 0.3-0.6: 1. the research shows that the weight ratio of the redispersible rubber powder to the cement-based permeable crystallization active master batch is a key factor influencing the grouting material, the weight ratio is too low, the flowing permeability of the grouting material is obviously reduced, and the plugging effect is reduced; however, if the weight ratio is too high, the anti-permeability of the grouting material is reduced, and the plugging effect is deteriorated. Preferably, the weight ratio of the redispersible powders to the cement-based osmotically crystalline active masterbatch is from 0.4 to 0.6:1. For example, 0.4:1,0.5:1,0.6:1.
Cement-based osmotically crystalline active masterbatches are important additives. The main action principle is that after the active compound contained in the material reacts with water, the water is used as a carrier to permeate into the gaps of the internal structure of the concrete or brick body, and the active compound permeated into the gaps of the concrete or brick body is interacted with free calcium oxide in the concrete or brick body to generate water-insoluble dendritic fiber crystals (calcium silicon calcium crystalline calcium sulfoaluminate and the like). The crystal absorbs water and expands in the structural hole seam from sparse to dense, so that a dense impervious area is gradually formed from the surface layer of the concrete or brick body structure to the depth, and the impervious capacity of the whole structure is greatly improved.
Further, the water-cement ratio of the underwater grouting plugging material is 0.5-1:1. Preferably, the water-cement ratio of the underwater grouting plugging material is 0.6-1:1.
The invention also aims to provide a preparation method of the underwater grouting plugging material.
The preparation method of the underwater grouting plugging material comprises the following steps:
step 1, dividing water into three parts, namely first part of water, second part of water and third part of water; uniformly mixing redispersible rubber powder, cement-based permeable crystallization active master batch and 1788 polyvinyl alcohol powder with the first part of water to obtain a first material; uniformly mixing cement, a concrete flocculant, a high-efficiency water reducing agent, quartz powder and the second part of water to obtain a second material; adding the third part of water into a micro-expanding agent for dissolution to obtain a third material;
and step 2, uniformly mixing the first material and the second material to obtain a fourth material, and uniformly mixing the third material and the fourth material to obtain the underwater grouting plugging material.
According to the preparation method of the underwater grouting plugging material, disclosed by the invention, the water content of raw materials is divided into three parts, the three parts are respectively added into three batches of raw materials, and then the mixing sequence of the three batches of raw materials is adjusted in a targeted manner, so that the underwater grouting plugging material is prepared.
Further, the weight ratio of the first part of water to the second part of water to the third part of water is 1-4: 10 to 15:1.
in summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. the underwater grouting plugging material provided by the invention is mainly prepared from redispersible rubber powder, cement-based permeable crystallization active master batch, 1788 polyvinyl alcohol powder, a high-efficiency water reducing agent, a micro-expanding agent, a concrete flocculant and quartz powder, wherein the addition proportion of each raw material and a specific preparation process are controlled in a targeted manner, so that the fluidity of the prepared plugging material can be controlled below 175mm after the prepared plugging material enters high-pressure fluidity water, the flowing property can be tested, the flowing time can be controlled within 32s, the plugging performance is excellent after grouting material is injected, and the water level is basically unchanged after 24 h. The plugging material has good flowing performance and hole coverage, can be coagulated in a short time, can realize quick improvement of strength, stably limits expansion performance and shrinkage resistance, has high density after hardening, can realize excellent plugging performance, and is convenient to popularize.
2. According to the preparation method of the underwater grouting plugging material, disclosed by the invention, the water content of raw materials is divided into three parts, the three parts are respectively added into three batches of raw materials, and then the mixing sequence of the three batches of raw materials is adjusted in a targeted manner, so that the underwater grouting plugging material is prepared.
Detailed Description
The present invention will be described in detail below.
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The cement-based active master batch for infiltration crystallization is purchased from Sichuan building repair technology Co.Ltd, and the cement-based active master batch for infiltration crystallization is 0.1-0.5 mm. Cements were purchased from the company Sichuan City river Chlamydia based cement Co. 1788 polyvinyl alcohol powder was purchased from Sichuan vinylon, a petrochemical company in China. The high efficiency water reducing agent, the micro-expanding agent, the concrete flocculant and the quartz powder are purchased from Suzhou Teng chemical engineering Co. Higher fatty acid vinyl ester copolymers were purchased from Shanxi three-dimensional groups, SWF-04. Polyvinyl acetate was purchased from Shandong Haohao materials Co., ltd and has a specification of HY54665.
Example 1
Preparing redispersible rubber powder:
10 parts of water, 0.5 part of sodium hydroxide and 2 parts of polyvinyl acetate; 1 part of higher fatty acid vinyl ester copolymer, 0.1 part of di (2-ethylhexyl) phthalate.
S1, adding water, sodium hydroxide and polyvinyl acetate into a reaction kettle, and stirring for 8min; then adding the higher fatty acid vinyl ester copolymer into a reaction kettle and stirring for 20min; then adding di (2-ethylhexyl) phthalate into the reaction kettle, and continuously stirring for 20min to obtain a first material;
step S2, introducing CO into the first material obtained in the step S1 2 Stopping introducing CO until the pH of the mixed solution is below 9 2 Obtaining a second material;
and S3, pumping the second material obtained in the step S2 into a spray box, and discharging the renewable dispersible rubber powder after the second material passes through an atomizing nozzle, an anti-scaling layer and a drying layer.
Preparation of underwater grouting plugging material
Preparing raw materials:
3 parts of redispersible rubber powder; 10 parts of cement; 5 parts of cement-based infiltration crystallization active master batch; 1788 polyvinyl alcohol powder 3 parts; 2 parts of high-efficiency water reducer; 3 parts of a micro-expanding agent; 3 parts of a concrete flocculant; 0.3 parts of quartz powder and 6 parts of water.
The method comprises the following steps:
step 1, dividing water into three parts, namely first part of water, second part of water and third part of water; uniformly mixing redispersible rubber powder, cement-based permeable crystallization active master batch and 1788 polyvinyl alcohol powder with the first part of water to obtain a first material; uniformly mixing cement, a concrete flocculant, a high-efficiency water reducing agent, quartz powder and the second part of water to obtain a second material; adding the third part of water into a micro-expanding agent for dissolution to obtain a third material;
and step 2, uniformly mixing the first material and the second material to obtain a fourth material, and uniformly mixing the third material and the fourth material to obtain the underwater grouting plugging material.
Example 2
Preparing redispersible rubber powder:
12 parts of water, 0.8 part of sodium hydroxide and 4 parts of polyvinyl acetate; 2 parts of higher fatty acid vinyl ester copolymer, 0.15 part of di (2-ethylhexyl) phthalate.
S1, adding water, sodium hydroxide and polyvinyl acetate into a reaction kettle, and stirring for 10min; then adding the higher fatty acid vinyl ester copolymer into a reaction kettle and stirring for 30min; then adding di (2-ethylhexyl) phthalate into the reaction kettle, and continuously stirring for 30min to obtain a first material;
step S2, introducing CO into the first material obtained in the step S1 2 Stopping introducing CO until the pH of the mixed solution is below 9 2 Obtaining a second material;
and S3, pumping the second material obtained in the step S2 into a spray box, and discharging the renewable dispersible rubber powder after the second material passes through an atomizing nozzle, an anti-scaling layer and a drying layer.
Preparation of underwater grouting plugging material
Preparing raw materials:
1 part of redispersible rubber powder; 10 parts of cement; 2 parts of cement-based infiltration crystallization active master batch; 1788 polyvinyl alcohol powder 2 parts; 1 part of high-efficiency water reducer; 2 parts of a micro-expanding agent; 2 parts of a concrete flocculant; quartz powder 0.1 parts and water 6 parts.
The method comprises the following steps:
step 1, dividing water into three parts, namely first part of water, second part of water and third part of water; uniformly mixing redispersible rubber powder, cement-based permeable crystallization active master batch and 1788 polyvinyl alcohol powder with the first part of water to obtain a first material; uniformly mixing cement, a concrete flocculant, a high-efficiency water reducing agent, quartz powder and the second part of water to obtain a second material; adding the third part of water into a micro-expanding agent for dissolution to obtain a third material;
and step 2, uniformly mixing the first material and the second material to obtain a fourth material, and uniformly mixing the third material and the fourth material to obtain the underwater grouting plugging material.
Example 3
Preparing redispersible rubber powder:
8 parts of water, 0.3 part of sodium hydroxide and 1 part of polyvinyl acetate; 1 part of higher fatty acid vinyl ester copolymer, 0.5 part of di (2-ethylhexyl) phthalate.
S1, adding water, sodium hydroxide and polyvinyl acetate into a reaction kettle, and stirring for 5min; then adding the higher fatty acid vinyl ester copolymer into a reaction kettle and stirring for 15min; then adding di (2-ethylhexyl) phthalate into the reaction kettle, and continuously stirring for 15min to obtain a first material;
step S2, introducing CO into the first material obtained in the step S1 2 Stopping introducing CO until the pH of the mixed solution is below 9 2 Obtaining a second material;
and S3, pumping the second material obtained in the step S2 into a spray box, and discharging the renewable dispersible rubber powder after the second material passes through an atomizing nozzle, an anti-scaling layer and a drying layer.
Preparation of underwater grouting plugging material
Preparing raw materials:
4 parts of redispersible rubber powder; 15 parts of cement; 8 parts of cement-based osmotic crystallization active master batch; 1788 polyvinyl alcohol powder 5 parts; 3 parts of high-efficiency water reducer; 4 parts of a micro-expanding agent; 4 parts of a concrete flocculant; 0.5 part of quartz powder and 10 parts of water.
The method comprises the following steps:
step 1, dividing water into three parts, namely first part of water, second part of water and third part of water; uniformly mixing redispersible rubber powder, cement-based permeable crystallization active master batch and 1788 polyvinyl alcohol powder with the first part of water to obtain a first material; uniformly mixing cement, a concrete flocculant, a high-efficiency water reducing agent, quartz powder and the second part of water to obtain a second material; adding the third part of water into a micro-expanding agent for dissolution to obtain a third material;
and step 2, uniformly mixing the first material and the second material to obtain a fourth material, and uniformly mixing the third material and the fourth material to obtain the underwater grouting plugging material.
Example 4
Preparing redispersible rubber powder:
8 parts of water, 0.3 part of sodium hydroxide and 1 part of polyvinyl acetate; 1 part of higher fatty acid vinyl ester copolymer, 0.5 part of di (2-ethylhexyl) phthalate.
S1, adding water, sodium hydroxide and polyvinyl acetate into a reaction kettle, and stirring for 5min; then adding the higher fatty acid vinyl ester copolymer into a reaction kettle and stirring for 15min; then adding di (2-ethylhexyl) phthalate into the reaction kettle, and continuously stirring for 15min to obtain a first material;
step S2, introducing CO into the first material obtained in the step S1 2 Stopping introducing CO until the pH of the mixed solution is below 9 2 Obtaining a second material;
and S3, pumping the second material obtained in the step S2 into a spray box, and discharging the renewable dispersible rubber powder after the second material passes through an atomizing nozzle, an anti-scaling layer and a drying layer.
Preparation of underwater grouting plugging material
Preparing raw materials:
1 part of redispersible rubber powder; 8 parts of cement; 3 parts of cement-based infiltration crystallization active master batch; 1788 polyvinyl alcohol powder 2 parts; a high-efficiency water reducing agent 1; 2 parts of a micro-expanding agent; 2 parts of a concrete flocculant; 0.2 parts of quartz powder and 8 parts of water.
The method comprises the following steps:
step 1, dividing water into three parts, namely first part of water, second part of water and third part of water; uniformly mixing redispersible rubber powder, cement-based permeable crystallization active master batch and 1788 polyvinyl alcohol powder with the first part of water to obtain a first material; uniformly mixing cement, a concrete flocculant, a high-efficiency water reducing agent, quartz powder and the second part of water to obtain a second material; adding the third part of water into a micro-expanding agent for dissolution to obtain a third material;
and step 2, uniformly mixing the first material and the second material to obtain a fourth material, and uniformly mixing the third material and the fourth material to obtain the underwater grouting plugging material.
Comparative example 1
29.3 parts of raw cement and 6 parts of water are prepared.
Cement and water were uniformly mixed to obtain a plugging material of comparative example 1.
Comparative example 2
Comparative example 2 compared to example 1 without the addition of redispersible powdersSpecific:
preparation of underwater grouting plugging material
Preparing raw materials:
10 parts of cement; 8 parts of cement-based osmotic crystallization active master batch; 1788 polyvinyl alcohol powder 3 parts; 2 parts of high-efficiency water reducer; 3 parts of a micro-expanding agent; 3 parts of a concrete flocculant; 0.3 parts of quartz powder and 6 parts of water.
The method comprises the following steps:
step 1, dividing water into three parts, namely first part of water, second part of water and third part of water; uniformly mixing the cement-based permeable crystallization active master batch, 1788 polyvinyl alcohol powder and the first part of water to obtain a first material; uniformly mixing cement, a concrete flocculant, a high-efficiency water reducing agent, quartz powder and the second part of water to obtain a second material; adding the third part of water into a micro-expanding agent for dissolution to obtain a third material;
and step 2, uniformly mixing the first material and the second material to obtain a fourth material, and uniformly mixing the third material and the fourth material to obtain the underwater grouting plugging material.
Comparative example 3
Comparative example 3 compared to example 1 without the addition of a cement-based osmotically crystalline active masterbatchComparative example 3 redispersible powders prepared in the same manner as in example 1.
The method comprises the following steps:
preparation of underwater grouting plugging material
Preparing raw materials:
3 parts of redispersible rubber powder; 13 parts of cement; 1788 polyvinyl alcohol powder 3 parts; 2 parts of high-efficiency water reducer; 3 parts of a micro-expanding agent; 3 parts of a concrete flocculant; 0.3 parts of quartz powder and 8 parts of water.
The method comprises the following steps:
step 1, dividing water into three parts, namely first part of water, second part of water and third part of water; uniformly mixing the redispersible rubber powder, 1788 polyvinyl alcohol powder and the first part of water to obtain a first material; uniformly mixing cement, a concrete flocculant, a high-efficiency water reducing agent, quartz powder and the second part of water to obtain a second material; adding the third part of water into a micro-expanding agent for dissolution to obtain a third material;
and step 2, uniformly mixing the first material and the second material to obtain a fourth material, and uniformly mixing the third material and the fourth material to obtain the underwater grouting plugging material.
Comparative example 4
Comparative example 4 modified addition of redispersible powders to cement-based osmotically crystalline active masterbatches as compared to example 1 Proportion ofComparative example 4 redispersible powders prepared in the same manner as in example 1. The method comprises the following steps:
preparation of underwater grouting plugging material
Preparing raw materials:
1 part of redispersible rubber powder; 10 parts of cement; 7 parts of cement-based infiltration crystallization active master batch; 1788 polyvinyl alcohol powder 3 parts; 2 parts of high-efficiency water reducer; 3 parts of a micro-expanding agent; 3 parts of a concrete flocculant; 0.3 parts of quartz powder and 6 parts of water.
The method comprises the following steps:
step 1, dividing water into three parts, namely first part of water, second part of water and third part of water; uniformly mixing redispersible rubber powder, cement-based permeable crystallization active master batch and 1788 polyvinyl alcohol powder with the first part of water to obtain a first material; uniformly mixing cement, a concrete flocculant, a high-efficiency water reducing agent, quartz powder and the second part of water to obtain a second material; adding the third part of water into a micro-expanding agent for dissolution to obtain a third material;
and step 2, uniformly mixing the first material and the second material to obtain a fourth material, and uniformly mixing the third material and the fourth material to obtain the underwater grouting plugging material.
Comparative example 5
Comparative example 5 the addition ratio of the redispersible powders to the cement-based osmotically crystalline active master batch was varied as compared to example 1, and comparative example 5 the redispersible powders prepared in the same manner as in example 1. The method comprises the following steps:
preparation of underwater grouting plugging material
Preparing raw materials:
4 parts of redispersible rubber powder; 10 parts of cement; 4 parts of cement-based infiltration crystallization active master batch; 1788 polyvinyl alcohol powder 3 parts; 2 parts of high-efficiency water reducer; 3 parts of a micro-expanding agent; 3 parts of a concrete flocculant; 0.3 parts of quartz powder and 6 parts of water.
The method comprises the following steps:
step 1, dividing water into three parts, namely first part of water, second part of water and third part of water; uniformly mixing redispersible rubber powder, cement-based permeable crystallization active master batch and 1788 polyvinyl alcohol powder with the first part of water to obtain a first material; uniformly mixing cement, a concrete flocculant, a high-efficiency water reducing agent, quartz powder and the second part of water to obtain a second material; adding the third part of water into a micro-expanding agent for dissolution to obtain a third material;
and step 2, uniformly mixing the first material and the second material to obtain a fourth material, and uniformly mixing the third material and the fourth material to obtain the underwater grouting plugging material.
Comparative example 6
Comparative example 6 a different preparation process was used than in example 1, and comparative example 6 was a redispersible powder prepared in the same manner as in example 1.
Preparation of underwater grouting plugging material
Preparing raw materials:
3 parts of redispersible rubber powder; 10 parts of cement; 5 parts of cement-based infiltration crystallization active master batch; 1788 polyvinyl alcohol powder 3 parts; 2 parts of high-efficiency water reducer; 3 parts of a micro-expanding agent; 3 parts of a concrete flocculant; 0.3 parts of quartz powder and 6 parts of water.
The method comprises the following steps:
and step 1, mixing all the raw materials, and uniformly stirring to obtain the underwater grouting plugging material.
Comparative example 7
Comparative example 7 a different preparation process was used than in example 1, and comparative example 7 was a redispersible powder prepared in the same manner as in example 1.
Preparation of underwater grouting plugging material
Preparing raw materials:
3 parts of redispersible rubber powder; 10 parts of cement; 5 parts of cement-based infiltration crystallization active master batch; 1788 polyvinyl alcohol powder 3 parts; 2 parts of high-efficiency water reducer; 3 parts of a micro-expanding agent; 3 parts of a concrete flocculant; 0.3 parts of quartz powder and 6 parts of water.
The method comprises the following steps:
step 1, dividing water into three parts, namely a first part of water, a second part of water and a third part of water; uniformly mixing redispersible rubber powder, cement-based permeable crystallization active master batch, 1788 polyvinyl alcohol powder, cement, concrete flocculant, high-efficiency water reducing agent, quartz powder, the first part of water and the second part of water, and adding the third part of water into a micro-swelling agent for dissolution;
and step 2, mixing the two materials to obtain the underwater grouting plugging material.
Test 1
The plugging materials prepared in examples 1 to 4 and comparative examples 1 to 7, respectively, were subjected to the following experiments.
The experiment was completed in pools with length, width and height of 1m, 1m and 10m, respectively. The main body of the pool is made of organic glass and has the thickness of 20mm. The base of the pool is made of concrete material. The surface and the inside of the concrete base are provided with leakage gaps. The stirring paddles are arranged in the water tank to stir the water body and simulate the water movement condition. The pool base is replaceable. 11 identical batches of concrete bases with identical seepage gaps, the length of which is 10cm, were prepared as replacement mounts for the auxiliary materials of examples 1 to 4 and comparative examples 1 to 7.
The specific operation is as follows:
(1): injecting water into the water tank until the water depth is 10m, and stopping water injection;
(2): starting a motor, wherein the speed of a stirring paddle is 120 revolutions per minute;
(3): after the motor is started for 0.5 hour, 2 hours and 24 hours, the water level is observed and measured;
(4): closing the motor;
(5): injecting water into the water tank until the water depth is 10m, and stopping water injection;
(6): starting a motor, wherein the speed of a stirring paddle is 120 revolutions per minute;
(7): grouting material is injected into the concrete gap through the grouting pipe;
(8): after the motor is started for 0.5 hour, 2 hours and 24 hours, the water level is observed and measured;
(9): closing the motor;
(10): changing a concrete base, changing grouting materials, and repeating the steps (5) - (9).
Wherein, during the experiments of examples 1 to 4 and comparative examples 1 to 7, the average water level measured in step 3 was changed as follows: at 0.5h, the water level was 9.1m.2h, 8.02m,24 h, 2.05m.
Test 2:
the plugging materials prepared in examples 1-4 and comparative examples 1-7, respectively, were subjected to the following dispersion resistance fluidity test.
Specifically, the grouting material was molded, the test mold size was 150mm×150mm, and the fluidity was measured after molding under water for 30 minutes.
Test 3:
the plugging materials prepared in examples 1 to 4 and comparative examples 1 to 7 were subjected to the following sagging test.
The outflow time of the grouting material in the specified cone is measured by performing experiments according to the requirements of the standard test method (flow cone method) of grouting flow for pre-filled aggregate concrete.
The test results are shown in Table 1.
TABLE 1
Figure SMS_1
As shown in the test results of Table 1, by adopting the technical scheme of the application, the fluidity of the grouting material prepared in the examples 1-4 can be controlled below 175mm, the flowing-out time can be controlled within 32s, the plugging performance is excellent after the grouting material is injected, and the water level is basically unchanged after 24 hours. The comparative examples 1 to 7 change some important parameter conditions, and the plugging effect is obviously reduced. Therefore, the underwater grouting plugging material provided by the application has good flowing performance and hole coverage, can be coagulated in a short time, can realize rapid strength improvement, stably limits expansion performance and shrinkage resistance, has high density after hardening, and can realize excellent plugging performance.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (7)

1. The underwater grouting plugging material is characterized by being prepared from the following raw materials in parts by weight:
1 to 5 parts of redispersible rubber powder; 5-15 parts of cement; 2-8 parts of cement-based infiltration crystallization active master batch; 1788 polyvinyl alcohol powder 2-5; 1 to 3 parts of high-efficiency water reducer; 2-4 parts of micro-expanding agent; 2-4 parts of a concrete flocculant; 0.1 to 0.5 part of quartz powder and 2 to 15 parts of water; the weight ratio of the redispersible rubber powder to the cement-based permeable crystallization active master batch is 0.3-0.6: 1, a step of;
the redispersible rubber powder is prepared from the following raw materials in parts by weight:
8-12 parts of water, 0.3-0.8 part of sodium hydroxide and 1-4 parts of polyvinyl acetate; 0.5 to 2 parts of higher fatty acid vinyl ester copolymer, 0.05 to 0.15 part of di (2-ethylhexyl) phthalate;
the redispersible rubber powder is prepared by the following method:
s1, adding water, sodium hydroxide and polyvinyl acetate into a reaction kettle, and stirring for 5-10 min; then adding the higher fatty acid vinyl ester copolymer into a reaction kettle and stirring for 15-30 min; then adding di (2-ethylhexyl) phthalate into the reaction kettle, and continuously stirring for 15-30 min to obtain a first material;
step S2, introducing CO into the first material obtained in the step S1 2 Stopping introducing CO until the pH of the mixed solution is below 9 2 Obtaining a second material;
step S3, pumping the second material obtained in the step S2 into a spray box, and discharging redispersible rubber powder after the second material passes through an atomizing nozzle, an anti-scaling layer and a drying layer;
the preparation method of the underwater grouting plugging material comprises the following steps:
step 1, dividing water into three parts, namely first part of water, second part of water and third part of water; uniformly mixing redispersible rubber powder, cement-based permeable crystallization active master batch and 1788 polyvinyl alcohol powder with the first part of water to obtain a first material; uniformly mixing cement, a concrete flocculant, a high-efficiency water reducing agent, quartz powder and the second part of water to obtain a second material; adding the third part of water into a micro-expanding agent for dissolution to obtain a third material;
and step 2, uniformly mixing the first material and the second material to obtain a fourth material, and uniformly mixing the third material and the fourth material to obtain the underwater grouting plugging material.
2. The underwater grouting plugging material according to claim 1, wherein the plugging material is mainly prepared from the following raw materials in parts by weight:
1 to 3 parts of redispersible rubber powder; 5-12 parts of cement; 2-6 parts of cement-based infiltration crystallization active master batch; 1788 polyvinyl alcohol powder 2-5; 1 to 3 parts of high-efficiency water reducer; 2-4 parts of micro-expanding agent; 2-4 parts of a concrete flocculant; 0.1 to 0.4 part of quartz powder and 2 to 10 parts of water.
3. The underwater grouting plugging material of claim 1, wherein the weight ratio of the redispersible powders to the cement-based osmotically crystalline active masterbatch is 0.4-0.6:1.
4. The underwater grouting plugging material of claim 1, wherein the water cement ratio of the underwater grouting plugging material is 0.5-1:1.
5. The underwater grouting plugging material of claim 4, wherein the water cement ratio of the underwater grouting plugging material is 0.6-1:1.
6. A method for preparing an underwater grouting plugging material according to any one of claims 1 to 5, comprising the steps of:
step 1, dividing water into three parts, namely first part of water, second part of water and third part of water; uniformly mixing redispersible rubber powder, cement-based permeable crystallization active master batch and 1788 polyvinyl alcohol powder with the first part of water to obtain a first material; uniformly mixing cement, a concrete flocculant, a high-efficiency water reducing agent, quartz powder and the second part of water to obtain a second material; adding the third part of water into a micro-expanding agent for dissolution to obtain a third material;
and step 2, uniformly mixing the first material and the second material to obtain a fourth material, and uniformly mixing the third material and the fourth material to obtain the underwater grouting plugging material.
7. The method for preparing an underwater grouting plugging material according to claim 6, wherein the weight ratio of the first portion of water, the second portion of water and the third portion of water is 1-4: 10 to 15:1.
CN202211202359.8A 2022-09-29 2022-09-29 Underwater grouting plugging material and preparation method thereof Active CN115521103B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211202359.8A CN115521103B (en) 2022-09-29 2022-09-29 Underwater grouting plugging material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211202359.8A CN115521103B (en) 2022-09-29 2022-09-29 Underwater grouting plugging material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN115521103A CN115521103A (en) 2022-12-27
CN115521103B true CN115521103B (en) 2023-06-30

Family

ID=84698897

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211202359.8A Active CN115521103B (en) 2022-09-29 2022-09-29 Underwater grouting plugging material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN115521103B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117105589A (en) * 2023-09-01 2023-11-24 河海大学 Deep water quick plugging alkali excitation grouting material and preparation method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104030631A (en) * 2014-05-12 2014-09-10 大连细扬防水工程集团有限公司 Cement-based penetration crystallization leak-stopping material and construction method thereof
CN105036656B (en) * 2015-07-28 2017-09-15 福建省固牌新型建材有限公司 Permeable crystallization type loss circulation material and application method
CN109160792B (en) * 2018-11-12 2021-04-02 上海凯顿百森建筑材料科技发展有限公司 Cement-based rapid waterproof plugging material and preparation thereof
CN111410494A (en) * 2020-04-22 2020-07-14 成都理工博大工程科技有限公司 Underwater non-dispersive rapid-hardening grouting leak-stopping composite material and preparation method thereof
CN112830751A (en) * 2021-03-19 2021-05-25 四川腾防防水保温工程有限公司 High-molecular plugging grouting material, and preparation method and construction method thereof
CN113388245B (en) * 2021-06-15 2022-07-08 成都工业学院 Waterproof leaking stoppage grouting material and preparation method and application thereof

Also Published As

Publication number Publication date
CN115521103A (en) 2022-12-27

Similar Documents

Publication Publication Date Title
CN106946518B (en) A kind of accelerated cement base infiltration crystallization type selfreparing waterproof material and preparation method thereof
CN114180930B (en) High-water-pressure ultra-large-diameter underwater shield tunnel double-liquid grouting slurry, process and application
CN111072366B (en) Inorganic grouting material capable of stopping open water and reinforcing structure and preparation method and application thereof
CN103864386B (en) Inorganic water-proofing material for stopping leak of self-healing property slow setting and preparation method thereof
CN102936115B (en) Production method of cement-based grouting material
CN105481324A (en) Inorganic grouting blocking material
CN115521103B (en) Underwater grouting plugging material and preparation method thereof
CN112759347A (en) High-toughness epoxy composite grouting material capable of being constructed at low temperature and preparation method thereof
CN105110730A (en) Modified organic silicon reinforced cement-based permeable crystallization type waterproof coating and preparation method therefor
CN112321231A (en) Formula and preparation method of polymer composite flowing type dredging sludge solidified soil
CN110746166A (en) Self-crystallized anti-permeability and moisture-proof mortar and production method thereof
CN114956768B (en) Anti-dispersion grouting material for grouting and water plugging of water-rich stratum, and preparation method and construction method thereof
CN111848070A (en) Aluminate cement mortar for cast iron pipe lining and preparation method thereof
CN100355853C (en) Water-proofing material for stopping leak
CN113603504B (en) Silt foam concrete and preparation method thereof
CN115286314A (en) Water-resistant and self-repairing environment-friendly grouting material matched with MJS construction method and use method thereof
KR20190128887A (en) Manufacture method of quick and slow setting grouting components to prevent leaching of liquid type which can automatically control to gel time and construction methods
CN115594469A (en) Low-drying-shrinkage 3D printing concrete and preparation method thereof
CN111763063A (en) Strong-permeability stratum grouting material in dynamic water environment and preparation method thereof
CN113548832B (en) Alkali-free liquid foam concrete conditioning and solidifying agent and preparation method thereof
CN115073082B (en) Microcapsule for self-repairing cement-based material microcrack in running water environment and preparation method thereof
CN111470837A (en) Collapsible loess composite grouting material and preparation method and application thereof
CN113831085B (en) Cement-styrene-acrylic emulsion and waterborne epoxy resin grouting material
CN108751896B (en) Impermeable preparation and application thereof in construction of road side slope sections
KR102585517B1 (en) Manufacturing and construction methods for crack self-healing materials to prevent leakage and faulty at the concrete joints of structures

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant