Magnesium-phosphate cementum protection coating for concrete clear water facing and preparing method thereof

A magnesium phosphate cement and protective coating technology, which is applied in the field of building materials, can solve the problem of poor adhesion and volume stability of inorganic Portland cement coatings, and easy aging and volatilization of organic coatings, which affect the environment and human health and other problems, to achieve the effect of solving the surface fouling of concrete structures, improving durability, and excellent adhesion
CN109133992AActive Publication Date: 2019-01-04ANHUI UNIVERSITY OF ARCHITECTURE
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ANHUI UNIVERSITY OF ARCHITECTURE
Publication Date
2019-01-04

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to a magnesium-phosphate cementum protection coating for a concrete clear water facing and a preparing method thereof. The protection coating is composed of a bottom coating and a surface coating, wherein the bottom coating is prepared from, by mass, 45%-60% of magnesium oxide, 15%-25% of monopotassium phosphate, 3%-5% of borax, 3%-5% of portland cement, 10%-20% of fly ash and 0.02% to 0.04% of cellulose ether, and the water-solid ratio is 0.2 to 0.5; the surface coating is silane emulsion, and is prepared in a manner that octyl triethoxysilane, sodium dodecyl sulfate and water serve as raw materials and are subjected to ultrasonic emulsification. The magnesium-phosphate cementum protection coatinghas the excellent cohesive property, volume stability, application property and weather resistance, the durability of a concrete structure material can be effectively improved, the problems that thesurface of a concrete structure serving in the natural environment is stained, and the durability is reduced are effectively solved, and the protection coating has the practical application value.
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Description

technical field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a magnesium phosphate cementitious protective coating for concrete clear water finish and a preparation method thereof. Background technique

[0002] Concrete structures serving in natural environments are vulnerable to the erosion of harmful media, resulting in surface fouling and reduced structural durability, thus affecting the appearance and service life of concrete structures. In order to improve the appearance and service life of concrete structures in the service environment, concrete finishing coatings are often used for treatment. At present, the most commonly used concrete finishing coatings are mainly inorganic Portland cement coatings and organic polymer coatings such as polyurea, epoxy resin, and silane. Although the above coatings can improve the durability of concrete structures, there are certain problems. Among them, inorganic Portland ce...

Claims

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