Geopolymer coating material for rust prevention and corrosion prevention of steel bars and manufacturing and using method thereof

Abstract

The invention relates to a geopolymer coating material for rust prevention and corrosion prevention of steel bars and a manufacturing and using method thereof. The coating material is composed of thefollowing materials: 90 parts of meta-kaolin, 10 parts of ordinary Portland cement, 10 parts of potassium hydroxide, 70 parts of potash water glass, 65-105 parts of water, 160-200 parts of natural fine sand, a high-performance polycarboxylate water reducer, which accounts for 1.2% of the total weight of meta-kaolin and ordinary Portland cement, and polypropylene fibers, which account for 0.25% ofthe total weight of meta-kaolin and ordinary Portland cement in unit volume. The beneficial effects of the invention are that: the material has mechanical properties for protecting the protective coating of steel bars, chloride ion permeability resistance, resistivity and bonding strength, is suitable for an anticorrosive protective layer of internal reinforcement of cast-in-place concrete or precast concrete members, can improve the durability of a concrete structure and effectively prolong the service life of the concrete structure, and does not influence the cooperative work of concrete andsteel bars.

Description

technical field [0001] The invention relates to the field of novel inorganic anti-corrosion coating materials, in particular to a geopolymer coating material used for anti-rust and anti-corrosion steel bars and a production and use method thereof. Background technique [0002] Since the French gardener Joseph Monier authorized the world's first reinforced concrete patent in 1867, concrete structures have become popular in the field of civil engineering and have played an extremely important and irreplaceable role. With the widespread application of concrete structures, the structural deterioration caused by the corrosion of steel bars has become a global problem in the engineering field, and is regarded as one of the stubborn diseases of the durability of concrete structures. [0003] Theoretically, as long as the concrete is dense enough and does not crack, the steel bars inside it will have sufficient stability in a strong alkaline atmosphere and will not easily corrode. ...

AI Technical Summary

Problems solved by technology

In terms of performance, under the continuous action of aggressive media, many organic coating materials, including epoxy resin, often show defects such as gradual aging, poor weather resistance, and high sensitivity to curing temperature and humidity.

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