STUDY ON EFFECT OF AGGREGATES ON MECHANICAL PROPERTIES OF ULTRA-HIGH PERFORMANCE CONCRETE WITH LOW AMOUNT SILICA FUME
In this work the effect of different aggregates, such as ultra-fine sand, quartz sand, basalt, and corundum on the mechanical properties of ultra high performance concrete (UHPC) is reported.The resulting UHPC was easy to prepare by adding low amount silica fume and large amount Ground granulated blast Furnace Slag and exhibited high strength.The effects of aggregate content and type on the compressive and flexural strengths of UHPC were studied.Results indicated that the optimal ratio of basalt to cementitious binder (CB) of UHPC with basalt was 1∶1.Moreover, with the ratio of ultra-fine sand to CB increasing from 0 to 0.5, the compressive strength of UHPC incorporating ultra-fine sand increased by 6%.Furthermore, the aggregate type had a significant effect on the compressive strength of UHPC.The compressive strength of UHPC containing quartz sand and corundum after curing 3 days under hot water at 90℃ was 155.2 MPa and 154.4 MPa, respectively, which was higher than that of UHPC with basalt by more than 8.3%.The UHPC with corundum didnt obtain higher strength, probably because the density of corundum was large resulting in obvious sink phenomenon.
Ultra high-performance concrete (UHPC) Compressive strength Quartz sand Basalt Corundum
Shenrui Ren Shouyi Yin Yishuang Zhang Bin Zhang Xiuming Ding Junfeng Wang
College of civil Engineering and Architecture, Hainan University, Haikou, China;Research center of M Research center of Marine Engineering Materials, State Key Laboratory of Marine Resource Utilization Institute of tropical agriculture and forestry, Hainan University, Haikou, China;Research center of College of civil Engineering and Architecture, Hainan University, Haikou, China;Institute of tropica
国际会议
福州
英文
221-230
2018-11-07（万方平台首次上网日期，不代表论文的发表时间）