复合矿物掺合料对高性能混凝土强度的研究  

A study of the potency of composite mineral amalgamated with high-performance concrete

作　　者：肖力光[1] 李正鹏 XIAO Li-guang;LI Zheng-peng(School of Materials Science and Engineering,Jilin Jianzhu University,Changchun 130118,China)

机构地区：[1]吉林建筑大学材料科学与工程学院,吉林长春130118

出　　处：《应用化工》2023年第8期2284-2287,共4页Applied Chemical Industry

基　　金：“十三五”国家重点研发计划项目(2018YFD1101001);吉林省科技发展计划项目(20210203114SF)。

摘　　要：采用了单掺和复掺矿物掺合料的方法,研究了粉煤灰与矿渣对混凝土7 d和28 d抗压强度的影响,分析了两种矿物掺合料球磨前与球磨后分别提升混凝土性能的机理。结果表明,粉煤灰的加入对混凝土早期强度起负作用,矿渣的掺入对混凝土早期和后期的强度发展都能起到积极的作用,当复掺12%球磨15 min的粉煤灰和12%球磨15 min的矿渣时,混凝土抗压强度最高,与基准配合比相比提高了12%。The paper studies the influence of fly ash and slag on the compressive strength of concrete for 7 d and 28 d,and the mechanism of improving the concrete performance before and after the ball grinding are analyzed.The results show that the addition of fly ash has a negative effect on the early strength of concrete,and the incorporation of slag can play a positive role on the early and late strength development of concrete.When the 12% ball grinding 15 min and 12% ball slag grinding 15 min,the compressive strength of concrete is the highest,which increases by 12% compared with the base mix ratio.

关 键 词：高性能混凝土 粉煤灰 矿渣 双掺 抗压强度 

分 类 号：TQ178[化学工程—硅酸盐工业] TU528.0[建筑科学—建筑技术科学]