The invention provides a non-shrinking pulverized-fuel-ash-based
geopolymer steel structure anti-corrosive
coating. Surface coatings of
steel structures can obstruct direct contact of corrosive mediums such as
chloride ions with reinforcing steel bars, and the anti-corrosive performance of the reinforcing steel bars is effectively improved; however, currently, surface coatings of the reinforcing steel bars have shortcomings that the
interface bonding performance of the reinforcing steel bars and the concrete is lowered,
pitting corrosion is triggered due to the defects of the coatings, and application of the coatings in practical
engineering is seriously restricted accordingly. According to the non-shrinking pulverized-fuel-ash-based
geopolymer steel structure anti-corrosive
coating, by conducting blending to obtain a proper alkali excitation matching proportion, the
cracking resistance and saltpetering resistance of the pulverized-fuel-ash-based
geopolymer inorganic anti-corrosive
coating are improved; meanwhile, the compactness,
carbonization resistance and
ion infiltration resistance of the coating are improved, the
bonding strength between the coating and the reinforcing steelbars is improved, and the cost is reduced.