After running for 30 years, carbonization, cracks and corrosion of steel have occurred on the surface of the concrete of Sanhe navigation lock which was built in 1970.
The corrosion of steel bar is the main reason to lead the destruction of concrete structure.
Because of the corrosion of steel cables and some other problems, its study and application was once put aside.
But in the Marine environment, the problem of electrochemical corrosion of steel structures is very prominent.
The experiment has proved that after being modified, the dipentanal disinfectant liquid has stable system and it can effectively control the corrosion of steel, iron and aluminum products.
Whereas corrosion of steel occurs due to a drop in activation potential caused by sodium chloride and to the effect of anode polarization produced by electro-chemical factors.
It was found that the pitting and crevice corrosion of steel wires were the main forms of corrosion.
Proper maintenance management can generally control the corrosion of steel components.
Due to the deterioration of water environment, corrosion of steel sluice gate becomes very serious.
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