Coastal cement concrete engineering has been eroded for a long time,and can't achieve their expected service lives.One solution was to just cultivate the ocean living beings on the surface of cement concrete engineering to resist the corrosion.The influences of hydroxyapatite,shell powder and calcium carbonate on the durability of 42.5R ordinary Portland cement and sulphoaluminate cement were investigated.The sulfate corrosion resistance coefficients of the cement would increase to some extent when appropri...