人工砂粉煤灰混凝土基本力学性能试验研究  

Experimental study on mechanical properties of manufactured sand fly ash concrete

作　　者：赵顺波[1] 夏铭[1] 刘春杰 

机构地区：[1]华北水利水电学院土木与交通学院,河南郑州450011 [2]焦作市公路管理局,河南焦作454152

出　　处：《铁道科学与工程学报》2006年第2期15-20,共6页Journal of Railway Science and Engineering

基　　金：河南省教育厅自然科学研究计划项目(2004560003)

摘　　要：通过试验研究了水胶比、粉煤灰替代水泥率和超量系数对人工砂混凝土立方体抗压强度、轴心抗压强度、弹性模量、劈裂抗拉强度和轴心抗拉强度的影响规律,提出了宜采用粉煤灰超量取代水泥配制人工砂粉煤灰混凝土,确定了粉煤灰替代水泥率和超量系数的合理取值范围;分析了人工砂粉煤灰混凝土的轴心抗压强度、弹性模量、抗拉强度与立方体抗压强度之间的关系,提出了设计计算方法,探讨了人工砂粉煤灰混凝土的强度随龄期变化规律。Tests were carried out to study the effects of the ratio of water to binder, the ratio and the over- weight coefficient of PFA displacing cement on the cubic compressed strength,the prismatic copressed strength,the elastic modulus,the splitting tensile strength and the axial tensile strength of manufactured sand concrete.It was suggested that the method of PFA over - weight displacing cement should be adopted for mixing manufactured sand PFAconcrete.The rational value ranges of the ratio and the over weight coefficient of pfa displacing cement are proposed.After analyzing the relationships between the prismatic compressed strength,the tensile strength,the elastic modulus and the cubic compressed strength this paper made proposals for design calculation and discussed.the variation of strength flolowing maintain time of manufactured sand PFA concrete.

关 键 词：混凝土 人工砂 粉煤灰 强度 弹性模量 龄期 

分 类 号：TU528.2[建筑科学—建筑技术科学]