PASS 550 Admixture is a super plasticizer based on polycarboxylate acid. Made with selected polymers, this product is formulated to provide excellent water reduction. which results in higher early strength. improved workability. and enhanced durability. Additionally, it elevates the concrete's ultimate compressive strength while allowing for reduced cement content, without compromising its mechanical performance.PASS 550 decreases the amount of water by (30 40) % to cement ratio.