A kind of acrylate composite grouting filling material and its preparation method and application

Abstract

The invention discloses an acrylate combined casting filling material as well as a preparation method and application thereof. The acrylate combined casting filling material comprises the following components: a main agent and a cross-linking agent, wherein the main agent is a mixture of acrylate; the cross-linking agent is one or a mixture of two of polyethylene glycol diallyl ether and oxidized bisphenol A diallyl ether. As the non-toxic polyethylene glycol diallyl ether and / or oxidized bisphenol A diallyl ether are adopted as the cross-linking agent, the rat oral half lethal dose of the casting material is greater than or equal to 6500mg / kg, the material is actually non-toxic, then a safe operation environment can be provided for construction operators, and the influence on the environment can be reduced to the maximum extent.

Description

technical field [0001] The invention belongs to the field of grouting materials for underground engineering reinforcement, and in particular relates to an acrylate composite grouting filling material and its preparation method and application. Background technique [0002] As a filling method in underground engineering, grouting has received more and more attention in underground engineering construction. Acrylate grouting materials are characterized by low viscosity, low working environment temperature, good strength and stability of gel after curing and Due to the advantages of low price, it is widely used in underground engineering filling, and its related research is receiving more and more attention. However, the existing acrylate grouting materials on the market often use N,N'-methylenebisacrylamide as a crosslinking agent, and N,N'-methylenebisacrylamide containing amide groups is a moderately toxic compound with a large Oral median lethal dose for rats (LD 50 )=390...

AI Technical Summary

Problems solved by technology

However, the existing acrylate grouting materials on the market often use N,N'-methylenebisacrylamide as a crosslinking agent, and N,N'-methylenebisacrylamide containing amide groups is a moderately toxic compound with a large Oral median lethal dose for rats (LD 50 )=390mg / kg, although the content is low, but considering the accumulation of toxicity of amide groups, long-term use will cause certain impact on the environment, so it should be avoided

Moreover, the compressive strength of the sand consolidation body of the existing acrylate grouting materials is low, most of which are maintained at about 0.3 MPa, and the gelation time of different brands of acrylate grouting materials has a large gap, and the gelation time It is fixed and cannot be changed, and cannot be adjusted according to actual engineering needs, making it difficult to meet engineering needs

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