Barium-based chlorine ion curing agent, preparation method and applications thereof

Abstract

The invention provides a barium-based chlorine ion curing agent, a preparation method and applications thereof, wherein the barium-based chlorine ion curing agent is mainly prepared by carrying out wet grinding on the following components by weight: 220-250 parts of barium residue, 50-80 parts of a grinding aid, 18-25 parts of an ion promoter, 25-35 parts of a dispersion stabilizer, and 610-687 parts of water. According to the present invention, the barium residue is used as the main raw material, and the wet grinding process is used, such that the fineness is increased, the specific surface area is increased, the Ba<2+> in the barium residue is fully dissolved in the wet grinding liquid phase environment, and can generate the stable barium sulfate precipitate with the replaced sulfate ions to reduce the sulfate ion content in the solution, and the conversion of AFm into the Kuzel's salt and the Friedel's salt and the solid solution thereof can be easily promoted so as to achieve the high chlorine ion curing rate, wherein the 3 d and 28 d chlorine ion curing rates can be increased by more than 20% so as to provide the new direction in the resource utilization of barium residue, greatly improves the resource utilization rate of barium residue, and improve the added value of the barium residue product.

Description

technical field [0001] The invention relates to the technical field of chloride ion curing agents, in particular to a barium-based chloride ion curing agent and its preparation method and application. Background technique [0002] In reinforced concrete, steel bars are usually in a highly alkaline (pH generally higher than 12.5) concrete pore solution environment, and a passivation film with a thickness of about 2 to 10 nm will be formed on the surface. The chemical composition of this film is Fe 3 o 4 -γFe 2 o 3 , The surface of the passivation film is rough and has defects, so this layer of film can be firmly combined with the surface of the steel bar, so that the steel bar has corrosion resistance. However, when chloride ions invade the reinforced concrete system and the content exceeds a certain value, it will lead to depassivation reaction and further strong electrochemical corrosion on the surface of the steel bar, which will induce corrosion of the steel bar and da...

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Problems solved by technology

[0004] In view of this, the present invention aims to propose a barium-based chloride ion curing agent to solve the problem of low resource utilization of existing barium slag

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