Underwater anti-dispersion high-strength acrylate grouting material

Abstract

The invention relates to a novel composite underwater anti-dispersion high-strength acrylate grouting material which comprises a material A, a material B and a material C. The material A is composed of a calcium magnesium acrylate solution, deionized water, a surfactant, a calcium magnesium ion chelating agent, a cross-linking agent and an accelerant. The material B is prepared from an initiator and deionized water; the material C is prepared from superfine cement, a flocculating agent, steel slag microspheres, an active excitant and low-temperature expandable microspheres. According to the underwater anti-dispersion high-strength acrylate grouting material, the calcium-magnesium ion chelating agent is used as a retarder, so that the grouting material is green, environment-friendly, non-toxic and harmless; superfine cement is matched with a flocculating agent, so that the compressive strength and the water dispersion resistance are greatly improved, and meanwhile, heat is provided forexpansion of the low-temperature expandable microspheres; the low-temperature expandable microspheres are adopted, so that the slurry has excellent elasticity and tensile property while maintaining high compressive strength after hardening, and the elongation rate can reach 205%; and the steel slag microspheres are adopted, so that the viscosity of the slurry is sharply reduced to 8Pa. S, and thegrouting performance is excellent.

Description

technical field [0001] The invention relates to a grouting material, in particular to a new composite underwater anti-dispersion high-strength acrylate grouting material. Background technique [0002] Ordinary acrylate grout has the advantages of low viscosity, strong elasticity, and controllable gel time, but compared with epoxy grout and polyurethane grout, its compressive strength is very low, the highest is only 0.6MPa. Moreover, because of its low viscosity, it is easily diluted by water in the presence of a large amount of water or under high water pressure conditions, resulting in infinitely prolonged gel time and inability to produce strength, losing the water blocking effect. [0003] my country's urban domestic sewage treatment system was established in the 1990s. At that time, most of them used concrete pipes and buried them underground. With the corrosion of sewage, concrete pipes are damaged. In places with abundant groundwater, groundwater will pour into sewag...

AI Technical Summary

Problems solved by technology

The currently used grouting materials include epoxy grouting material and polyurethane grouting material. They are oily substances and are incompatible with water. Excessive grouting will pollute the environment, and the gel time is uncontrollable, the viscosity is high, and the tiny cracks cannot be repaired.

Ordinary acrylate grout is a water-based material with low viscosity, strong elasticity, and controllable gel time, but the strength is too low to function in the face of large water gushing or high water pressure, which leads to the need to develop an environmentally friendly high-strength acrylate grout

[0004] For example, the patent with publication number CN 104177554 A discloses a kind of environment-friendly acrylate grouting material and its preparation method and application. The scheme provided by this patent uses -β-hydroxyethyl methacrylate as the main agent. And the 28-day compressive strength of the prepared acrylate grouting material is 2.5MPa, which has poor performance and cannot meet the high-strength demand underwater