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ProductD• • Sheets *,,qr gcp applied technologies <br /> ZYLA ® 630 <br /> Water-reducing admixture -- ASTM C494 Type A and D <br /> Product Description <br /> ZYLA® 630 water-reducing admixture is a proprietary formulation incorporating highly purified specialty <br /> organic chemicals. ZYLA® 630 promotes more complete hydration of Portland cement and has no effect on <br /> concrete air entrainment. <br /> The ZYLA®product line of water reducers is specially formulated to have a synergistic effect with <br /> polycarboxyl ate-based mid-range and high-range water reducers that improve flat-work finishability.This <br /> product contains no intentionally added chloride and as such is essentially chloride free. It is manufactured <br /> under rigid controls that provide uniform, predictable performance. ZYLA® 630 is supplied as a light brown, <br /> low viscosity liquid, and is ready-to-use as received. One gallon weighs approximately 9.1 Ibs (1.1 kg/Q. <br /> Product Advantages <br /> • No impact on concrete air content <br /> • Better control of water reduction and setting times as compared to traditional lignin-based water <br /> reducers <br /> • Synergistic performance of polycarboxyl ate-based mid-range and high-range water reducers, which <br /> includes water reduction, concrete strength and air control <br /> • In the hardened state, improves the compressive and flexural strengths at all ages of concrete versus <br /> traditional lignin-based water reducers <br /> Uses <br /> ZYLA® 630 is used to produce concrete mixes with lower water content (typically 3%to 10% reduction), <br /> greater plasticity and higher compressive strengths. ZYLA® 630 is suitable for normal weight and light <br /> weight concrete in ready-mix, precast and prestressed applications. <br /> Finishability <br /> The unique chemistry of ZYLA® 630 positively impacts the finishability of concrete by providing a creamier <br /> and more homogenous texture, with more uniform bleed rate relative to traditional lignin-based water <br /> reducers.The influence of ZYLA® 630 on the finishability of lean mixes has been particularly noticeable. <br /> Floating and troweling, by machine or hand, imparts a smooth, close tolerance surface. <br /> Page 1 of 3 <br />