Surface Protection Treatment of Civil Engineering Rebar and its Corrosion Resistance in Simulated Concrete Pore Solution
HRB335 rebar,which is commonly used in civil engineering structures,was selected as the experimental matrix in this study,which was treated via phosphating followed by sealing treatment in order to improve the corrosion resistance in concrete environment.The results show that the phosphating film completely covers the surface of rebar matrix,and sealing treatment by immersing in the antirust oil has no obvious effect on the morphology characteristics and thickness of the phosphating film,but it can obviously improve the corrosion resistance of the phosphating film.The compactness of the phosphating film is improved after sealing treatment in silicate solution,the chemical composition of the phosphating film is also changed,and the corrosion resistance is significantly enhanced.A dense phosphating film is generated on the surface of the rebar by phosphating and then sealing treatment in silicate solution,which can shield water and corrosive media.Phosphating and then sealing treatment in silicate solution are an effective way to improve the corrosion resistance of the rebar in concrete environment.
万方数据
维普
