PASS 450-FR Admixture is a superplasticizer based on polycarboxylate acid. Made with selected polymers, this product is formulated to provide excellent water reduction. which results in great ultimate final strength.improved workability, andd enhanced durability. with delay setting time for (5-8) hours depending on the dry material, hot weather, rate of absorption of material to increase ultimate strengths or to facilitate a reduction in the cement content while sustaining mix properties. PASS 450-FR gives high slump increase with the same amount of water, and decrease the amount of water by (30-40)% to cement ratio.PASS 450-FR set retarding slump retention admixtures that enhance finish quality.