Abstract: To improve the corrosion resistance of cement concrete projects in marine environment, we carried out research on the anti-chloridion-corrosion performance of concrete with marine cement as the raw material. We summarized the key points of quality control for the construction of Nantang middle sluice at Dongtou, Wenzhou city. Through mathematical statistics and field test on the concrete, we compared the chloride ion diffusion coefficient and the carbonization depth between marine concrete and ordinary concrete, and obtained the properties of anti-chloridion-penetration of marine cement concrete. Results indicate that marine cement concrete has excellent performance in strength and durability in marine environment.

Key words: marine engineering cement, durability of concrete, diffusion coefficient of chloridion