电解锰渣粉对混凝土孔结构及力学性能的影响  

Effect of electrolytic manganese slag powder on pore structure and mechanical properties of concrete

作　　者：吴锐 王超林 夏晔 张坤 WU Rui;WANG Chaolin;XIA Ye;ZHANG Kun(College of Civil Engineering,Guizhou University,Guiyang 550000,China;School of Economics and Management,Beijing University of Posts and Telecommunications,Beijing 100000,China)

机构地区：[1]贵州大学土木工程学院,贵州贵阳550000 [2]北京邮电大学经济管理学院,北京100000

出　　处：《混凝土与水泥制品》2024年第5期94-97,共4页China Concrete and Cement Products

基　　金：国家自然科学基金资助项目(52004072)。

摘　　要：研究了电解锰渣粉等质量取代0、10%、20%、30%、40%、50%的水泥对混凝土孔结构和力学性能的影响。结果表明:不同电解锰渣粉掺量试件中大孔、中孔、小孔的连通性均较差,且小孔数量较多;随着电解锰渣粉掺量的增加,试件中的孔隙数量增多,孔隙率增大,抗压强度降低,弹性模量基本呈降低趋势;与基准组相比,掺电解锰渣粉试件的应力-应变曲线的压密阶段和峰后失稳破坏阶段明显变长,说明延性有所提高。The effects of replacing 0,10%,20%,30%,40%,and 50%of cement with electrolytic manganese slag powder on the pore structure and mechanical properties of concrete were studied.The results show that the connectivity of macropores,mesopores,and micropores in specimens with different contents of electrolytic manganese slag powder is poor,and there are more micropores.With the increase of the content of electrolytic manganese slag powder,the number of pores in the specimen increases,the porosity increases,the compressive strength decreases,and the elastic modulus basically shows a decreasing trend.Compared with the benchmark group,the compression stage and post peak instability failure stage of the stress-strain curve of the specimen mixed with electrolytic manganese slag powder are significantly longer,indicating an improvement in ductility.

关 键 词：电解锰渣粉 混凝土 孔结构 抗压强度 

分 类 号：TU528.041[建筑科学—建筑技术科学]