Influence of Fly Ash on the Mechanical Properties of Engineered Cementitious Composites Cured at High Temperature

摘要：

In order to investigate the mechanical properties of cementitious composites (ECC) cured at 60 ℃,four-point bending test and compressive strength test are employed to analyze the effect of fly ash on the properties of ECC.The replacement ratio of cement with fly ash is 50％,70％ and 80％,respectively.The test results indicate that ECC with high volume fly ash still remain the characteristic of pseudo-strain hardening and the deflection of ECC increases remarkably by adding more fly ash.The observations of ECC indicate that the crack width is relatively smaller for higher volume fly ash ECC.Meanwhile,compressive strength of ECC specimens with 80％ fly ash can reach to 70MPa.This is helpful to produce precast ECC with high volume of fly ash.

关键词： ECC PVA fly ash mechanical properties

作者: ZHU Yu YANG Yingzi DENG Hongwei YAO Yan

作者单位: School of Material Science and Engineering,Harbin Institute of Technology,Harbin 150001,China School of Civil Engineering,Harbin Institute of Technology,Harbin 150001,China China Building Materials Academy,Beijing,100024,China

会议类型: 国际会议

会议名称: 2010 International Conference of Environment Materials and Environment Management(2010年环境材料与环境管理国际学术会议 EMEM 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 1293-1296

在线出版日期: 2010-07-24（万方平台首次上网日期，不代表论文的发表时间）