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.
作者
肖力光
李正鹏
XIAO Li-guang;LI Zheng-peng(School of Materials Science and Engineering,Jilin Jianzhu University,Changchun 130118,China)
出处
《应用化工》
CAS
CSCD
北大核心
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)。
关键词
高性能混凝土
粉煤灰
矿渣
双掺
抗压强度
high-performance concrete
fly ash
slag
double doping
compressive strength
