Concrete surface protection system

Abstract

The invention belongs to the field of protection of concrete surfaces and relates to a durable and corrosion-proof concrete surface protection system. The protection system comprises four parts, namely, a priming paint, an inter paint, a finish paint and a finish-coat paint, wherein the priming paint mainly comprises a silane emulsion, a siloxane emulsion, a dispersant, a corrosion-resistant agent and water; the inter paint mainly comprises a silicon resin emulsion, a siloxane emulsion, a coalescing agent, a dispersant, a corrosion-resistant agent and water; the finish paint mainly comprises a silicon resin emulsion, an acrylic emulsion and / or a modified acrylic emulsion, a dispersant, a corrosion-resistant agent, a coalescing agent and water; and the finish-coat paint mainly comprises a fluorine-silicone resin polymer, a dispersant, a corrosion-resistant agent, a coalescing agent and water. The protection system can be immersed at 3-8mm from the concrete surface and is cured and cross-linked to form a protective layer, and the protection system has the advantages of excellent air permeability, water-repellent property, immersion resistance, weather resistance, freeze-thawing resistance and corrosion resistance; by the protection system, early carbonation and morbid change of concrete are prevented, the weather resistance is improved and the durability and practicability of concrete are prolonged.

Description

technical field [0001] The invention belongs to the field of concrete surface protection, in particular to a durable anticorrosion concrete surface protection system. Background technique [0002] Since the advent of concrete materials, they have experienced the development of low-strength, medium-strength, high-strength and even ultra-high-strength. People always seem to be willing to pursue the continuous improvement of strength. But the fact that a large number of concrete structures fail prematurely shows that high strength does not mean high durability. During the service process, the concrete structure is inevitably subjected to the physical, chemical and biological effects of the surrounding environment, and the porosity of the concrete itself provides a channel for the intrusion of harmful ions from the outside, which deteriorates and declines the performance of the concrete material, and then endangers the concrete structure. performance. Due to the lack of durabi...

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Problems solved by technology

However, the emulsion described in this patent needs to be prepared by a high-pressure emulsifier, which consumes a lot of energy

[0005] Patent CN102134443A discloses a concrete protective agent containing silicone resin emulsion, siloxane additive and potassium methyl silicate, but the material contains a large amount of deionized water, which will seriously affect the construction effect of the material on the facade structure, and must be Repeated application for many times, and the waterproof ability of this material is limited, so it cannot guarantee the long-term waterproof requirements of concrete structures

[0006] 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

[0007] 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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