Two-component crack repairing agent

Abstract

The invention relates to the technical field of building materials, and aims to provide a two-component crack repairing agent which comprises, by mass, 10% to 25% of sodium silicate solution, 5% to 14% of zinc chloride solution, 0.1% to 1% of surfactant, 3 .5% to 8% of silane coupling agent, 6% to 25% of ethanol, 1% to 4% of ammonia water, 10% to 25% of magnesium fluorosilicate solution, 8% to 14%of aluminium oxide sol, 0.5% to 5 % of nano-rigid particles and the balance being distilled water. According to the principle of dual system reaction reinforcement, that is, alkaline system reacts with acidic system to further strengthen the matrix material, the material at the repair site is more firmly combined with the surrounding matrix material; as reaction products of aluminum oxide oil canharden and reinforce concrete and rigid nanoparticles can also improve hardness of concrete, the overall performance is improved. The two-component crack repairing agent has simple preparation process, can be directly rolled or sprayed to the surface of concrete in large area for construction, has no pollution to the environment, needs simple raw materials and low cost, and is especially suitablefor large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a two-component crack repairing agent. Background technique [0002] Concrete is the most widely used man-made building material, and is widely used in various structural projects; however, due to the limitations of the concrete material itself and the construction level, many infrastructures, industrial plant floors, etc. have long been damaged, and the surface has potholes, weathering, Dust, sand, and peeling phenomena lead to poor wear resistance and short service life. They can no longer adapt to the needs of modern production environments and are in urgent need of renovation. To solve this problem, the alternatives usually include laying wooden floors, floor tiles or directly Cover with a layer of epoxy floor paint, etc.; but the above-mentioned solutions are too cost-effective, and the places of use are limited. [0003] Based on the defects in the technology and performa...

AI Technical Summary

Problems solved by technology

At present, the most widely used ground hardener materials in the domestic and foreign markets are mainly lithium-based salt products, such as CN101618956A, CN200910055825 and CN201110083155.2, which all use lithium-based salt as the main component, which plays a reinforcing role after reacting with concrete, but The content of active ingredients is low, the improvement of concrete performance brought by a single construction is small, and the gloss durability and weather resistance of the products are poor, and the gloss declines significantly in a short period of time, especially for poor (such as cracks, etc.) substrates Its effect is worse.

[0004] As people's demand for ground diversification increases, they begin to gradually pursue products that are both durable and beautiful after use, especially the apparent color of the repaired surface of the substrate after cracks appear. However, there is no formula in the above-mentioned patents. It can not only improve the basic performance of the substrate, but also change its appearance, color and overall uniformity after repairing

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