Experimental Research on the Influence of Chloride Attack on Sea Sand Concrete under Coastal Environment

Being one of main components of concrete, the river sand can't satisfy the increasing demand of construction owing to the limited resources and environmental impact. The fact that sea sand used in concrete is controversial, it is still an effective measure to relieve the shortage of sand. The contribution presents the chloride profile of concrete with sea sand concrete and river sand obtained by continuous laboratory testing and outdoor testing. The results indicate that the initial chloride content of sample composites of sea sand is relates to 0.16% by weight of concrete, the property of fine aggregate play a pronounced role in the permeability of concrete. And the concrete exposed to coastal environment will be seriously affected by drying-wetting cycles, which greatly accelerate the chloride penetration into concrete.