LOW CHLORIDE DISTRIBUTION IN CONCRETE STRUCTURES NEAR SEASHORE

Abstract

The JSCE design specification for preventing the deterioration of a structure nearby the marine environment has been developing continuously more than 20 years. The specification for a new construction covers all levels of the severity on chloride attack in Japan. Following this design, structures in mild areas have excessive prevention which cause the non-economical asset. At the seashore, the surface chloride concentrations on the outdoor structures were observed that they are extremely different to the specification. Some chlorides on structural surface could be washed out during the raining period. As the result, structures might have a small amount of chloride content despite of it is located nearby the shoreline.