大掺量粉煤灰混凝土力学性能试验研究  

Study on the Mechanical Properties of High Volume Fly Ash Concrete

作　　者：刘丹[1] 杜应吉[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100

出　　处：《人民黄河》2011年第10期88-90,共3页Yellow River

基　　金："十一五"国家科技支撑计划重点项目(2006BAD11B03)

摘　　要：在混凝土中掺加粉煤灰,既可以节约水泥,又可以提高混凝土的耐久性。通过不同配合比混凝土力学性能试验,分析了混凝土轴心抗压强度、抗压弹性模量、轴心抗拉强度、抗拉弹性模量和极限拉伸值的变化规律及其之间的关系。结果表明:当水胶比为0.35、粉煤灰掺量为60%时,粉煤灰混凝土28 d的强度可满足工程要求,说明在低水胶比情况下加大粉煤灰掺量是可行的。Adding fly ash in concrete not only can save cement,but also can improve the durability of concrete.The axial compressive strength and it＇s elastic modulus,axial tensile strength and it＇s elastic modulus,and ultimate tensile value and the relationship between them are discussed through the test of mechanical properties of concrete with different mixture ratio.The results show that when the water-cement ratio is 0.35 and fly ash content is 60%,28-day compressive strength of fly ash concrete has been met the engineering requirements,and it is feasible to mix a large number of fly ash in the case of low water-cement ratio.

关 键 词：弹性模量 抗压强度 极限拉伸值 配合比 粉煤灰混凝土 

分 类 号：TU528.041[建筑科学—建筑技术科学]