... of power or liquid additive. This series of products are standard, early strength, retarding varieties. Product performance is stable, has a ... mixed with 1.5%~2.5%.Concrete compressive strength ratio: Standard type: 3d 125%~140%, 7d 110%~130%, 28d 100%~115%. Early ... strength type: 3d 150%~170%, 7d 130%~160%, 28d 100%~110%. Retarded ...