Chemical Admixture For Viscosity Reduction of Cement Compound and High Strength Concrete Composition using the same

The present invention relates to a concrete admixture such as chemical composition, which can effectively reduce the viscosity of the cement mixture, and which improves the pump pressure-feeding force by preferably using this high strength concrete admixture composition. Viscosity reducing chemical admixture composition of the cement mixture according to the invention, a solid content of 10 to 40% of the polycarboxylic acid-based dispersant, 80 to 95% by weight; Sodium gluconate 1 to 10% by weight; Neopentyl glycol, 1-10% by weight; And, anti-foaming agent 0.05 to 0.3% by weight; and being configured to. The high-strength concrete composition according to the invention is characterized in that which comprises the above-described viscosity reducing chemical admixture for a cement composition over 0.5 to 3% by weight of binder in the high-strength concrete mix. Viscosity, viscosity, fluidity, high strength concrete pumps, pumping