赤鉄鉱石骨材コンクリート梁の海洋暴露実験

抄録

A five-years exposure programe has been started to clarify the durabilitycharacteristics, such as, weather and sea-water resistance of concrete usinghematite aggregate, with the object of studying the applicability of such concretein marine structures. Beams with concrete using these aggregates have been exposedin marine environment and this report has been prepared on the basis of the resultsobtained after one year. It was found that on the basis of crack propagation andcorrosion of the reinforcing bars embedded in concrete, it can be said that thedurability of concrete using hematite aggregates is at least comparable to that ofnormal concrete.