Self-seepage concrete crack repairing glue and method for making same

Abstract

The invention discloses a self-permeating concrete crack repairing glue and the preparing method thereof, which is characterized in that after mixing and stirring evenly 10-15 percent vinyl polyurethane with 10-60 percent vinyl monomer, 10-60 percent unsaturated epoxy resin, 0.1-10 percent accelerant, and 0.01-1 percent polymerization inhibitor according to the weight proportions each constituent accounting for, the main constituent A is obtained when the above mixture is discharged; after mixing and stirring evenly 60-90 percent plasticizing agent with 1-35 percent silane resin acceptor and 1-5 percent evocating agent, and then the accessory constituent B is obtained after the above mixture is discharged. Before in use, main constituent A and accessory constituent B are required to be packed separately, and during in use, the main constituent A and accessory constituent B are required to be mixed together by mixing proportion according to requirements. The invention integrates the advantages of the polyurethane, the epoxy resin, and the acrylic ester into a whole; has the advantages of low viscosity coefficient, self-permeability, quick firming, high strength, high durability and simple operation; can be used for repairing the cracks of the road, the dam or the airdrome.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a self-permeable concrete crack repair glue for roads, dams or airports and a preparation method thereof. Background technique [0002] Concrete is one of the most widely used building materials in engineering construction. In actual engineering, due to the influence of the environmental conditions of the building, improper design, construction quality and other reasons, concrete cracks and other diseases are relatively common. [0003] In the prior art, the most prominent advantage of the epoxy resin slurry mentioned in Chinese patent CN86104918A is that the viscosity of the slurry is relatively small, but its curing time is long, which usually takes several hours to several days; Shorter initial setting time to shorten construction period and improve efficiency. [0004] Acrylic repair materials have the characteristics of low viscosity and fast curing,...

AI Technical Summary

Problems solved by technology

[0004] Acrylic repair materials have the characteristics of low viscosity and fast curing, but have the disadvantages of large volume shrinkage, hot stickiness and cold brittleness

A fast-curing acrylic structural adhesive reported in Chinese patent CN1198460 is a two-component structural adhesive based on vinyl polyurethane and acrylic, which has the advantages of fast curing time and high bond strength, but due to its The formula needs to add a transition metal chelating agent and a substituted dihydropyridine as a reactive diluent, which is cumbersome

Chinese patent CN1247882A reports a two-component polyurethane building sealant and its production process. The two-component polyurethane is terminated with NCO, and the viscosity reaches more than 200 cps, but the high viscosity is not suitable for repairing fine seams

[0006] A kind of road crack sealant reported by Chinese patent CN1376756 has good adhesion and elasticity, and can be used for crack repair; but its viscosity is relatively large, and toluene is used as a solvent, which is not environmentally friendly enough

[0007] Chinese patent CN101081933 reports a green and environment-friendly polymer emulsion inorganic powder and nano-material composite modified emulsified asphalt crack repair material, but because it is a water-emulsion type, the water volatilization speed is slow, and the repair glue cures slowly, so it is not suitable for rapid Repair occasion use