Grouting material

Abstract

The invention relates to a grouting material. The grouting material is prepared by mixing silicate cement, hydroxyl ethyl methyl cellulose, natural guar gum, silica fume, glycine betaine and water in a weight ratio of (1-1.2):(0.001-0.008):(0.001-0.01):(0.1-0.2):(0.001-0.005):1. According to the grouting material, the slurry viscosity and condensing performance can be improved due to the interaction of silica fume, hydroxyl ethyl methyl cellulose and natural guar gum, the viscosity and strength can be further improved due to the glycine betaine and natural guar gum, the elastic performance can be regulated according to the condition, and the aqueous dispersion effect in various water qualities can be resisted.

Description

technical field [0001] The invention relates to a grouting material, in particular to a water dispersion-resistant grouting material. Background technique [0002] Grouting grout is generally divided into two categories: single-liquid grout and double-liquid grout: (1) single-liquid grout is mainly made of fly ash, sand, cement, water, admixture, etc., and this grout can be divided into It is an inert slurry and a hard slurry. There is no or a small amount of cement added to the inert slurry. Because the cement is added to the hard slurry, it has a certain early strength and later strength. The single-liquid slurry has the advantages of simple construction technology and is not easy to block pipes, and is widely used in the grouting of shield tunneling; (2) The double-liquid slurry is mainly composed of cement and water glass. It has the advantages of high strength and is not easy to penetrate into the surrounding soil, which is conducive to the stability of the tunnel. It...

AI Technical Summary

Problems solved by technology

When the material is injected into the water-bearing structure, it is easily washed away and diluted by water, thus changing the established grouting material slurry mix ratio, losing its original performance, and unable to effectively seal the water-bearing structure

At the same time, the relatively expensive price of quick-setting grouting materials is also the bottleneck restricting its wide engineering application.

[0004] Most of the existing technologies rely on adding additives to ease the dispersion of water. Minerals such as water reducers and fly ash can be added, and some can also be added with polystyrene, etc., but this will bring environmental pollution to some extent, and the effect not ideal