矿渣粉在高性能混凝土中的试验研究

本文研究了矿渣粉细度和掺量对高性能混凝土的强度、抗渗、抗冻融等性能的影响。试验表明：矿渣越细,早期强度越高，但对后期强度的影响逐渐变小；随着矿渣粉掺量增加，3d、7d强度明显降低。28d强度在掺量30％时最大，对后期强度影响逐渐变小。掺入20％～40％矿渣粉配制的高性能混凝土具有良好的施工性能和优异的耐久性能。

Slag-powder in high performance concrete by experimental studying

According to correlative technology criterions,the cement mortar and the concrete experiment were performed,in which the impact of the slag-powder's fineness and quantity upon the strength, durability and workability of HPC (High Performance Concrete)were studied. The test consequence revealed that the finer the slag-powder is, the higher the concrete strength is, and the impact of the fineness and the quantity on long duration strength diminished gradually;the 3d and 7d strength diminished obviously with the increase of slag-powder,and 28d strength with 30% slag-powder is the highest among other slag-powder mixture ratios; the HPC with 20%40% slag powder was more workable and durable.