硅灰掺量对活性粉末混凝土力学性能的影响  

EFFECT OF SILICA FUME QUANTITY ON MECHANICAL PROPERTIES OF REACTIVE POWDER CONCRETE

作　　者：刘红彬[1] 鞠杨[1,2] 孙华飞[3] 王里[3] 葛志顺[3] 刘金慧[3] 

机构地区：[1]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083 [2]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008 [3]中国矿业大学(北京)力学与建筑工程学院,北京100083

出　　处：《工业建筑》2015年第4期132-135,共4页Industrial Construction

基　　金：教育部高等学校博士学科点专项科研基金(20110023110015);国家杰出青年科学基金(51125017);北京市教委共建项目资助

摘　　要：为探明硅灰对活性粉末混凝土(RPC)力学性能的影响,通过对RPC立方体和梁试件的抗压、劈裂和抗折试验,研究5种不同硅灰掺量下RPC的抗压、劈裂和弯折强度。结果表明:硅灰掺量的增加有效改善了RPC的力学性能,但存在一个最优掺量。在满足高性能、和易性和经济要求的前提下,硅灰掺量在12%时,能够获得性能较好的RPC200,并给出了RPC强度随硅灰掺量变化的经验表达式。To investigate the effects of silica fume on the mechanical properties of Reactive Powder Concrete（ RPC） , the compression strength, split tensile strength and flexural tensile strength of RPC with five different silica fume volumetric contents were researched by the compressive, split tensile and flexural tensile tests of RPC cubic and beam specimens.It was shown that the increasing content of silica fume could improve the mechanical properties of RPC effectively, but there existed an optimum content of silica.In order to meet the requirements of the high performance, good workability and economy simultaneously, the volumetric content of silica fume being 12%could obtain the good performance RPC200.In addition, the relationships between the measured strengths and the volumetric contents of silica fume were empirically formulated.

关 键 词：活性粉末混凝土 硅灰 力学性能 

分 类 号：TU528[建筑科学—建筑技术科学]