Water paint special for steel bar anti-corrosion in concrete

Abstract

The invention relates to an anti-corrosion coating, in particular to a special water-based paint used for the anti-corrosion of reinforcement in concrete. Under the action of an inorganic acid, active pigment and antirust pigment further form nitrogenousbase ion genes which absorb stable rust to lead active rust to lose activity, thus achieving the effect of coordination and complexation. Pigment paste is fully permeated into micropores on the steel surface, the rust is separated and surrounded in the pigment paste, and interaction is carried out through slow hydrolysis after film forming; an indissoluble heteropolyacid complex compound is further formed, namely, the rust is transformed into a new stable protective layer which is permeated into the metal surface and pinholes; and a corrosion layer on the metal surface is transformed into the useful protective layer which is firmly attached to the metal surface so as to prevent the corrosion of the reinforcement in concrete and prolong the service life of steel structure in concrete.

Description

technical field [0001] The invention relates to an anti-corrosion paint, in particular to a special water-based paint used for anti-corrosion of steel bars in concrete. Background technique [0002] At present, in the field of construction, reinforced concrete is the most important material for building construction. However, the failure of concrete structures caused by steel corrosion and how to improve its durability have always puzzled material scientists. A large number of engineering practices have shown that the cost of concrete repair and reinforcement is much higher than that of the original construction, although the results are often unsatisfactory. Due to the difference in material selection, construction, maintenance and other processes, the time for concrete structures to fail is also very different, ranging from several years to decades. Under the joint action of certain conditions, the damage caused by corrosion of steel bars will occur in an instant, causing...

AI Technical Summary

Problems solved by technology

[0002] In the field of construction, reinforced concrete is the most important material for building construction. However, problems such as the failure of concrete structures caused by steel corrosion and how to improve its durability have always plagued material scientists.

Under the joint action of certain conditions, the damage caused by the corrosion of steel bars will occur in an instant, causing major safety accidents and threatening the safety of people's lives and properties