Protective agent for clear water concrete

Abstract

The invention discloses a protective agent for clear water concrete. The protective agent is composed of a priming paint, a medium paint and a finishing paint, wherein the priming paint is an organosilicon polymer, the medium paint is composed of a self-crosslinked polymer, water, pigment, a filling material and other auxiliary agents, and the finishing paint is a fluorosilicone resin polymer. According to the protective agent for the clear water concrete in the invention, three layers of the paints are combined and successively coat the surface of the clear water concrete, so surface color difference of the clear water concrete is repaired, nature quality and texture of the clear water concrete are maintained, the clear water concrete is endowed with a plurality of functions like water resistance, resistance to chemical attack, weatherability and self-cleaning performance, durability of the clear water concrete is substantially improved, and the service life of the clear water concrete is prolonged.

Description

technical field [0001] The invention belongs to the field of concrete protection, in particular to a protective agent for fair-faced concrete. Background technique [0002] Fair-faced concrete originated in Japan. It is a one-time molding without any decoration. Its natural state formed by the combination of the natural texture of the concrete itself and the well-designed open joints, Zen joints and pull bolt holes is the architectural expression of decoration. , Widely used in industrial buildings, high-rise civil engineering, public buildings and municipal bridges. However, as a heterogeneous building material, concrete has many tiny pores inside, which are very easy to absorb water. In the natural environment, the erosion of rainwater will cause dirt to form on the surface of the concrete, affecting its appearance; and acidic substances penetrate into the interior of the concrete through water. , the alkaline concrete is slowly neutralized, causing the concrete strength ...

AI Technical Summary

Problems solved by technology

However, as a heterogeneous building material, concrete has many tiny pores inside, which are very easy to absorb water. In the natural environment, the erosion of rainwater will cause dirt to form on the surface of the concrete, affecting its appearance; and acidic substances penetrate into the interior of the concrete through water. , so that the alkaline concrete is slowly neutralized, causing the strength of the concrete to decrease, thereby affecting the life of the building, so the surface coating of fair-faced concrete is a necessary means to maintain the effect of fair-faced concrete and prolong its life

[0003] Patent CN200710187907.3 discloses a silicone waterproof emulsion for building surfaces, which is modified silicon (oxygen) ) Alkanes and silane coupling agents are emulsified by emulsifiers, but the hydrophobic group of the silicone waterproof emulsion is a branched or branched sulfonyl chloride structure, and the performance of the emulsion is poor when used in a harsh environment

[0004] Patent CN201010131848.X discloses a silicone concrete protective agent, which is mainly prepared from alkylsilane oligomers, emulsifiers, aminosilane tackifiers and water. Rapidly cross-linked and polymerized into macromolecular siloxane, does not block the capillaries and pores in the concrete structure, and has good air permeability, but the preparation process for coating the protective agent is relatively complicated and the energy consumption is high

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