Experimental Study on the Influence of Limestone Powder Aggregate on the Performance of UHPC Concrete
Based on traditional ultra-high performance concrete(UHPC),this article studies the influence of different limestone powder con-tents on the performance of UHPC.The results showed that compared with traditional UHPC without limestone powder,the workability of the concrete mixture was significantly improved after adding limestone powder,with a significant decrease in viscosity and better flowability.The strength slightly weakened at 1 and 3 days,with little change at 7 and 28 days,and a slight decrease in chloride ion diffusion coefficient at 56 days.Replacing some of the cement with limestone powder not only improves the workability of the concrete mixture,achieving the required strength and durability,but also significantly improves its economy.
Limestone powderUHPCWork performanceEconomyStrengthDiffusion coefficientNew type of concrete