不同掺合料掺量的活性粉末混凝土抗压强度试验  

Compressive Strength Test on Reactive Powder Concrete with Different Admixtures

作　　者：金凌志[1] 李月霞[2] 付强[2] 

机构地区：[1]桂林理工大学广西矿冶与环境科学实验中心,广西桂林541004 [2]桂林理工大学广西岩土力学与工程重点实验室,广西桂林541004

出　　处：《河南科技大学学报（自然科学版）》2014年第5期55-62,110-111,共8页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(51368013);广西科技攻关基金项目(桂科攻0995004);广西重点实验基金项目(11-cx-04)

摘　　要：通过活性粉末混凝土试件的受压试验,研究不同掺合料掺量的活性粉末混凝土在标准养护28 d条件下的受压力学性能。分析活性粉末混凝土立方体抗压强度、棱柱体抗压强度、弹性模量和峰值应变的相互换算关系,拟合出活性粉末混凝土应力-应变曲线方程式。研究结果表明:掺合料含量对活性粉末混凝土抗压强度影响较大,不同掺合料对活性粉末混凝土强度影响由大到小依次为:粉煤灰>硅粉>双掺粉煤灰和石英粉>硅微粉>石英粉,当粉煤灰掺合料掺量为40%时,活性粉末混凝土能达到较高强度。Through compression tests of different dosage of admixture of reactive powder concrete( RPC) cubic specimens under standard 28 d curing conditions,the compressive mechanical property was analyzed,and the mutual conversion relationships among cube compressive strength,prism compressive strength,elastic modulus and the peak strain were derived. The RPC stress-strain curve equation was fitted out. The results show that the influence of admixture content on RPC compressive strength is more pronounced and the order of compressive strength from large to small is fly ash > silica fume > pair of fly ash > quartz powder > silicon powder > quartz powder. When the fly ash content is 40%,RPC can get higher strength.

关 键 词：活性粉末混凝土 不同掺合料 强度 应力 -应变曲线 

分 类 号：TU312.1[建筑科学—结构工程]