砂率对煤矸石粉混凝土和易性及抗压强度的影响  

Influence of sand ratio on the workability and compressive strength of concrete with coal gangue powder

作　　者：周美丽[1] 柯国军[1] 

机构地区：[1]南华大学城市建设学院,湖南衡阳421001

出　　处：《混凝土》2016年第8期133-135,共3页Concrete

基　　金：国家自然科学基金项目(51378247);湖南省科技计划资助项目(2009Ck4020);湖南省教育厅(JG2012B033)

摘　　要：通过对砂率为35%、39%、43%、47%、51%的煤矸石粉混凝土进行试验,研究掺加煅烧煤矸石粉的情况下,砂率对混凝土和易性及7、28、60 d抗压强度的影响。煤矸石粉取代水泥掺入混凝土中,取代率为20%。研究结果表明:与基准组混凝土相比,砂率对煤矸石粉混凝土和易性及强度的影响趋势较平缓;煤矸石粉掺入混凝土后混凝土的整体强度降低,但能一定程度改善混凝土的保水性及黏聚性。Experimented on the waste glass powder concrete with the sand ratio of 35%, 39%,43%,47%, 51% respectively.And anal- ysed the effects of sand ratio on the workability and the compressive of 7,28,60 d of coal gangue powder concrete.The results show that the influence of the sand ratio on the workability and compressive strength of coal gangue powder concrete is gentle when compared with the control group concrete.The compressive strength of coal gangue powder concrete is reduced, but the water-retaining property and adhe- siveness is improved.

关 键 词：砂率 煤矸石粉 泵送混凝土 坍落度 抗压强度 

分 类 号：TU528.01[建筑科学—建筑技术科学]