Study on the Influence of fly ash, mineral powder and silicon powder on the performance of high-performance concrete

To study the effect of fly ash, mineral powder, and silica fume on working performance mechanical properties C70 high-performance concrete by adding same amount granulated blast furnace slag as a composite admixture to replace cement. Influencing law, at time, optimal dosage ratio various admixtures is determined through orthogonal experiment. The results show that: when 6% fume, it can improve concrete. When increased, viscosity increases fluidity decreases. Incorporating an appropriate greatly increase compressive strength blended with ash in proportion 20%, better. replaces cement, reduces hydration improves cohesion concrete, 7d, 28d cube significantly. Adding 10% powder affect early highperformance extend setting time pumping capacity