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Water-dispersion-resistant synchronous grouting material for water-rich stratum

A water-resistant dispersion and synchronous grouting technology, applied in the field of grouting materials, can solve the problems of easy to be washed by water, dilution, poor water-resistant dispersion performance, affecting project quality, etc., to improve the injectability and water-resistant dispersion performance. Good, high coagulation effect

Inactive Publication Date: 2021-01-29
南通轨道交通集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional synchronous grouting materials have problems such as being easily washed and diluted by water, and they have poor water dispersion resistance when applied in water-rich formations, which leads to a substantial increase in grouting volume and low grouting filling rate. Water leakage and surface subsidence caused by insufficient filling are serious, which directly affect the quality of the project

Method used

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  • Water-dispersion-resistant synchronous grouting material for water-rich stratum

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Experimental program
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Effect test

Embodiment 1

[0030] In this embodiment, 2000g of water-resistant and dispersed synchronous grouting material suitable for water-rich formations is made of the following quality raw materials: 664g of 42.5-grade ordinary Portland cement that meets the requirements of the "General Portland Cement" standard, and meets the requirements of the "Construction Portland Cement" standard. "Sand" standard requirements, fineness modulus 2.5 ~ 3.0, mud content <1.0% river sand 1327g, nano-silicon modified magnesium lithium silicate 7g, sodium polyacrylate 0.27g, guar gum ether 1g, high performance reducer Aqua 0.73g;

[0031] After mixing the raw materials of 2000 g of the above materials, put them into a mortar mixer and stir for 120 seconds to make the raw materials evenly mixed. Then add the water of 1600g and stir for 120 seconds again, make finished material L 1 .

Embodiment 2

[0033] In this embodiment, 2000g of water-resistant and dispersed synchronous grouting material suitable for water-rich formations is made of the following quality raw materials: 664g of 42.5-grade ordinary Portland cement that meets the requirements of the "General Portland Cement" standard, and meets the requirements of the "Construction Portland Cement" standard. "Sand" standard requirements, fineness modulus 2.5 ~ 3.0, mud content <1.0% river sand 1327g, nano-silicon modified magnesium lithium silicate 6.67g, sodium polyacrylate 0.53g, guar gum ether 1g, high performance Water reducer 0.8g;

[0034] After mixing the above-mentioned 2000 g of each raw material in total, put it into a mortar mixer and stir for 120 seconds, so that each raw material is uniformly mixed. Then add the water of 1600g and stir for 120 seconds again, make finished material L 2 .

Embodiment 3

[0036]In this embodiment, 2000g of water-resistant and dispersed synchronous grouting material suitable for water-rich formations is made of the following quality raw materials: 994g of 42.5-grade ordinary Portland cement required by the "Universal Portland Cement" standard, which meets the requirements of "Construction Use Sand" standard requirements, fineness modulus 2.5 ~ 3.0, mud content < 1.0% river sand 993g, nano-silicon modified magnesium lithium silicate 9.6g, sodium polyacrylate 0.4g, guar gum ether 2g, high performance reducer Aqua 1g;

[0037] After mixing the above-mentioned 2000 g of each raw material in total, put it into a mortar mixer and stir for 120 seconds, so that each raw material is uniformly mixed. Then add the water of 1500g and stir for 120 seconds again, make finished material L 3 .

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Abstract

The invention discloses a water-dispersion-resistant synchronous grouting material for a water-rich stratum. The water-dispersion-resistant synchronous grouting material is prepared from Portland cement, sand, nano-silicon modified magnesium lithium silicate, sodium polyacrylate, guar gum ether and a high-performance water reducing agent. The grouting material has the advantages of being good in water dispersion resistance, low in bleeding rate, high in early strength and high in stone rate, and can resist dilution and dispersion of underground water and can be normally coagulated when being used for synchronous grouting construction of a water-rich stratum, so that normal shield tunneling construction is guaranteed; the grouting filling rate is high, filling is sufficient after grouting is completed, and the water leakage problem and the surface subsidence problem caused by the filling are avoided.

Description

technical field [0001] The invention relates to a grouting material, in particular to a water-resistant dispersion synchronous grouting material for water-rich formations. Background technique [0002] Synchronous grouting material is a gap with a certain thickness formed during the construction of subway shield or shield tunnel and other projects. The gap needs to be filled with synchronous grouting material to make up for the loss of soil layer and prevent surface subsidence and displacement. And increase the disturbance to the surrounding strata and so on. [0003] Traditional synchronous grouting materials have problems such as being easily washed and diluted by water, and they have poor water dispersion resistance when applied in water-rich formations, which leads to a substantial increase in grouting volume and low grouting filling rate. Water leakage and surface subsidence caused by insufficient filling are serious, which directly affect the quality of the project. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/70
CPCC04B28/04C04B2111/00008C04B2111/70C04B2201/50
Inventor 朱先发杜锋刘祥勇宋普涛赵涛宁李卫华王军张伟王晶周永祥冷发光夏京亮王祖琦高超贺阳周郅人朱逸飞
Owner 南通轨道交通集团有限公司
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