... ) Under normal conditions, up to 25% of water per unit of cement can be reduced, and 20% of cement decreased without affecting concrete strength3 ... by mixing 0.5-1% of the agent per unit weight of cement, with corresponding 20-50% of reinforced concrete realized and concrete quick ... lessening labor with a qualified structure c) With 0.5% of the agent mixed, the concrete strength keeps stable, while 20 ...