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Cement-water glass grouting material

A grouting material and water glass technology, which is applied in the field of weak strata reinforcement of underground engineering and grouting for anti-seepage and water blocking, can solve the problems of unstable solid structure, easy segregation of cement slurry, poor corrosion resistance, etc. Controllable, high strength, good water retention effect

Inactive Publication Date: 2018-02-16
建发合诚工程咨询股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional cement water glass slurry still has some disadvantages, such as unstable solid structure, poor corrosion resistance, poor durability, easy segregation of cement slurry, poor water dispersion resistance, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of liquid A: select sodium silicate with a Baume degree of 40Be' for use.

[0024] Preparation of liquid B: in parts by mass, add 10 parts of sodium tripolyphosphate, 1.5 parts of polyvinyl alcohol, and 2.5 parts of naphthalene-based high-efficiency water reducer to 500 parts of water, stir well, then add 486 parts of cement, and continue stirring evenly. .

[0025] Mixing: Mix liquid A and liquid B uniformly at a volume ratio of 1:1 to obtain the finished grouting material.

[0026] The material test indicators are as follows:

[0027] The water separation rate of liquid B is about 3% in 2h, the setting time is 60s, the compressive strength is 5.2MPa in 7d, and the compressive strength can reach 11.6MPa in 14d.

Embodiment 2

[0029] Preparation of liquid A: select sodium silicate with a Baume degree of 45Be'.

[0030] Preparation of liquid B: in parts by mass, add 13 parts of sodium tripolyphosphate, 2 parts of polyvinyl alcohol, and 3 parts of naphthalene-based superplasticizer to 428 parts of water, stir well, then add 554 parts of cement, and continue stirring evenly. .

[0031] Mixing: Mix liquid A and liquid B uniformly at a volume ratio of 1:1 to obtain the finished grouting material.

[0032] The material test indicators are as follows:

[0033] The water separation rate of liquid B is about 2.5% in 2h, the coagulation time is 30s, the compressive strength is 8.8MPa in 7d, and the compressive strength can reach 17.4MPa in 14d.

Embodiment 3

[0035] Preparation of liquid A: select sodium silicate with a Baume degree of 35Be'.

[0036] Preparation of liquid B: In parts by mass, add 11.5 parts of sodium tripolyphosphate, 1 part of polyvinyl alcohol, and 1.5 parts of naphthalene-based high-efficiency water reducer to 600 parts of water, stir well, then add 386 parts of cement, and continue stirring evenly. .

[0037] Mixing: Mix liquid A and liquid B uniformly at a volume ratio of 1:1 to obtain the finished grouting material.

[0038] The material test indicators are as follows:

[0039] The water separation rate of liquid B is about 4% in 2h, the coagulation time is 160s, the compressive strength is 3.1MPa in 7d, and the compressive strength can reach 4.2MPa in 14d.

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Abstract

The invention discloses a kind of cement-water glass grouting material, and belongs to the technical field of strengthening of soft stratum in underground engineering and anti-seepage water-plugging grouting. The material comprises two uniformly mixed components of a liquid A and a liquid B, wherein the A liquid is water glass with a modulus in a range of 2.6-3.2 and a baume degree of 20-45 Be', and the liquid B is cement slurry which includes cement, a retarder, a stabilizer and a water reducing agent, wherein the mixing amount of the retarder is 0.5-3% of the cement mass, the mixing amount of the stabilizer is 0.1-0.5% of the cement mass, and the mixing amount of the water reducing agent is 0.1-1% of the cement mass. When the material is used, the A liquid and the B liquid are uniformlymixed according to a volume ratio of 0.8:1-1.2:1 for obtaining the cement-water glass grouting material. The material has the advantages of good stability of slurry, good water retaining property, good fluidity, controllable coagulation time, high strength of stone body, good durability, and good water dissolution resistance and erosion resistance.

Description

technical field [0001] The invention belongs to the technical field of soft ground reinforcement and anti-seepage water plugging grouting in underground engineering, and in particular relates to a cement-water glass grouting material. Background technique [0002] Grouting is an engineering activity. It uses supporting mechanical equipment and adopts a reasonable grouting process to inject grout into the gaps, cracks, roadways or cavities of rock and soil. , the permeability of soil, enhance its strength and stability, and achieve the purpose of rock and soil reinforcement, anti-seepage and water blocking. [0003] During the construction of underground tunnels such as subways, if the geological conditions are poor, the groundwater is abundant, and the water level is high, emergencies such as mud gushing and water gushing, primary branch deformation and cracking are prone to occur, which poses great safety risks in tunnel construction. In order to ensure that the excavation...

Claims

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Application Information

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IPC IPC(8): C04B28/26C04B111/70
CPCC04B28/26C04B2111/00146C04B2111/70C04B2201/50C04B22/16C04B24/2623C04B2103/302C04B7/02
Inventor 孟龑程棋锋陈永坤刘德全陈天培林东明康明旭黄从增袁浩李书亮全涛郭力群杜委峰陈茜吴晚霞黄乙纯沈志献魏承锋杨华东李建文
Owner 建发合诚工程咨询股份有限公司
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