摘要
Abstract
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.关键词
石灰石粉/UHPC/工作性能/经济性/强度/扩散系数/新型混凝土Key words
Limestone powder/UHPC/Work performance/Economy/Strength/Diffusion coefficient/New type of concrete分类
交通工程
