A high-permeability non-shrinkage epoxy grout

Abstract

The invention relates to a high-permeability non-shrinkage epoxy grouting material, which is composed of A and B components, wherein, in terms of mass, A component: 60-80 parts of epoxy resin, 20-35 parts of active diluent, 10-20 parts Alumina short fiber, 3-5 parts of oxidant; component B by mass: 10-20 parts of curing agent, 8-12 parts of benzyl alcohol, 4-8 parts of vinyl modifier, 2-4 parts of catalyst. Compared with the prior art, the present invention has the following advantages: it is reinforced by alumina fiber, and the grouting material has good corrosion resistance and high strength; the selected curing agent is cage-type polysilsesquioxane with eight amino groups , the grouting material has higher crosslinking density and strength after being fully cured; the grouting material has higher toughness after being modified by a vinyl modifier.

Description

technical field [0001] The invention relates to a grouting material, in particular to a high-permeability non-shrinkage epoxy grouting material. [0002] technical background [0003] Since the promotion and application of grouting materials in China in the 1990s, they have been widely used in equipment installation, bolt anchorage, and reinforcement and renovation projects of many large and medium-sized enterprises. The scope of use has gradually expanded from a single metallurgical industry to Municipal, environmental protection, electric power, ports and other industries. Epoxy resin has the characteristics of high bonding strength, can be cured at room temperature, high mechanical properties and good corrosion resistance, so it is widely used in many fields such as electronics, machinery, construction, etc. as adhesives, coatings, and grouting materials. Epoxy resin grouting material is currently the most widely used chemical grouting material. This type of material has...

AI Technical Summary

Problems solved by technology

However, the epoxy resin grouting material mainly has the following problems: the viscosity of the epoxy resin is too high, and it is not easy to inject during the grouting process; when the epoxy resin is added with other filler additives such as sodium silicate, the filler has a strong adsorption force to the epoxy resin, and the filler distribution is not good. Uniformity, unable to achieve uniform filling and bonding, it is easy to cause low grouting strength, reduced adhesion, and easy cracks; during the grouting process, it is greatly affected by the environment, and it is easy to cause dry cracking after hardening. Oxygen resin produces water accumulation and water seepage after grouting, the plugging is not firm, and the compressive strength is low

However, the grout of this invention suffers from poor chemical resistance and shrinkage over time

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