LOW STRENGTH CONCRETE FOR PUMP PRESSURE FEED, AND METHOD FOR PRODUCING LOW STRENGTH CONCRETE FOR PUMP PRESSURE FEED

摘要

PROBLEM TO BE SOLVED: To provide low strength concrete for pump pressure feed capable of being pressure-fed with a pump in spite of its low strength.SOLUTION: The low strength concrete for pump pressure feed comprises: cement; an aggregate; recycled sand; and sludge water obtained by separating cleaning drain water in concrete treatment equipment from sand and gravels.