超细钢铁渣粉对水泥基材料的力学性能影响  

Effects of superfine iron and steel slag powder on mechanical properties of cement-based materials

作　　者：张梦成 刘心中 杨康 彭蕾 郇冬冬 丘琛辉 ZHANG Mengcheng;LIU Xinzhong;YANG Kang;PENG Lei;HUAN Dongdong;QIU Chenhui(School of Ecological Environment and Urban Construction,Fujian University of Technology,Fuzhou 350118,China)

机构地区：[1]福建工程学院生态环境与城市建设学院,福建福州350118

出　　处：《福建工程学院学报》2022年第6期556-560,共5页Journal of Fujian University of Technology

基　　金：国家重点研发计划课题资助(2019YFC1904103)。

摘　　要：以超细钢铁渣粉(以下简称“超细钢渣”)为主要掺合料制备胶凝材料,通过XRF、粒径分析、XRD分析和力学性能测试,探究超细钢渣对水泥基材料的力学性能影响。结果表明:通过机械研磨制备出的超细钢渣,其矿相成分硅酸三钙、硅酸二钙和莫来石特征峰强度最强,复掺的超细钢渣活性指数也满足国家标准。随着超细钢渣掺量增加,3 d抗压和抗折强度均出现逐渐降低的趋势,但在外掺m(超细钢渣)∶m(超细矿渣)=2∶3、w复合粉=30%时,其28 d抗压和抗折强度达到峰值,分别为8.9、53.8 MPa。超细钢渣在不同龄期水化反应程度不同,早期水化反应较低,强度较差;后期水化程度较高,且优于同标准水泥。The cementitious materials were prepared with ultra-fine steel slag powder as the main admixture,and the effects of ultra-fine steel slag on the mechanical properties of cement-based materials were explored through XRF,particle size analysis,XRD analysis and mechanical property testing.Results show that the ultrafine steel slag prepared by mechanical grinding has the strongest characteristic peaks of tricalcium silicate,dicalcium silicate and mullite,and the activity index of the superfine steel slag powder mixed with it also meets the national standard.With the increase of the superfine steel slag content,the 3d compressive and flexural strengths both tend to decrease gradually,but when the addition of m(ultrafine steel slag):m(ultrafine slag)is 2:3,and the total amount is 30%(mass fraction)of the composite powder,its 28 d compressive and flexural strengths reached their peak values of 8.9 MPa and 53.8 MPa,respectively.Ultrafine iron and steel slag powder has different degrees of hydration reaction at different ages,the early hydration reaction is low,and the strength is poor;the later hydration degree is higher,and it is better than the same standard cement.

关 键 词：超细钢渣 超细矿渣 水泥基材料 凝结时间 流动性 力学性能 

分 类 号：TU528[建筑科学—建筑技术科学]