Influence of Ultra-fine Powder on Mechanical Properties of Cement-based Materials

摘要：

To study the application of ultra-fine powder in cement-based materials, the cement-based samples mixed with different reactive rruneiai composite additives were tested on the flexural strength and compressive strength. The effects of several factors such as the volume of mineral powder A, the volume of silica fume and the percentage of mineral powder A blended with silica fame, on the mechanical properties of cement-based material were discussed. The results show that the ultra-fine powder of reactive mineral composite additive influences greatly the flexural strength and compressive strength of cement-based material. Especially, the silica fume can improve the flexural strength and compressive strength. The SEM analysis shows that the second hydratation of ultra-fine powder together with the disadvantage component Ca(OH)2 inside the samples produces the advantage C-S-H gel and reforms the microstructure of cement-based materials effectively.

关键词： flexural strength compressive strength Mechanical

作者: Hong-xia QIAO Hong-fa YU Zhong-mao HE

作者单位: Qinghai institute of salt lakes, Chinese academy of sciences, Xining 810008, China Qinghai institute of salt lakes,Chinese academy of sciences, Xining 810008, China Gansu science Research Institute of Civil Engineering, Lanzhou 730020, China

会议类型: 国际会议

会议名称: The Third International Conference on Modelling and Simulation(第三届国际建模、计算、仿真、优化及其应用学术会议 ICMS 2010)

会议地点: 无锡

会议语种:英文

页码: 145-149

在线出版日期: 2010-06-04（万方平台首次上网日期，不代表论文的发表时间）