热焖钢渣的火山灰活性及其对水泥强度的影响  

Pozzolanic Activity of Braised Steel Slag and Its Influence on Cement Strength

作　　者：庄赞鹏 田尔布[2,3] ZHUANG Zanpeng;TIAN Erbu(Sanming Highway Maintenance Center,Sanming,Fujian 365004;Fujian Provincial Key Laboratory of Engineering Materials and Structure Reinforcement,Sanming University,Sanming,Fujian 365004;School of Architectural Engineering,Sanming University,Sanming,Fujian 365004)

机构地区：[1]三明市公路事业发展中心,福建三明365004 [2]福建省工程材料与结构加固重点实验室三明学院,福建三明365004 [3]三明学院建筑工程学院,福建三明365004

出　　处：《武夷学院学报》2022年第9期47-52,共6页Journal of Wuyi University

基　　金：三明市引导性科技项目计划项目(2019-S-64);福建省科技厅社会发展引导性(重点)项目(2019Y0044);福建省教育厅科技项目(JT180505;B201816);福建省中青年教师教育科研项目(JAT190699)。

摘　　要：钢渣的主要矿物组成为硅酸二钙和硅酸三钙,与水泥孰料相似,但是水化活性较低。采用热焖、磁选加研磨的工艺对钢渣进行处理制成热焖钢渣,以石粉为对照组,运用强度试验、SEM试验、XRD试验,对热焖钢渣的火山灰活性进行研究。结果显示:热焖钢渣具有火山灰活性,但是活性较小。将热焖钢渣代替水泥,制作不同热焖钢渣掺量的胶砂试块,研究热焖钢渣添加量对水泥强度的影响。结果表明热焖钢渣可作为水泥掺料,但掺量最好控制在20%以内。The main mineral composition of steel slag is dicalcium silicate and tricalcium silicate, which are similar to cement, but have low hydration activity. The hot-sealing steel slag was processed by the process of hot-sealing, magnetic separation and grinding to make hot-sealing steel slag. With stone powder as the control group, strength test, SEM test and XRD test were used to study the pozzolanic activity of hot-sealing steel slag. The results show that hot-sealing steel slag has pozzolanic activity, but less activity. The hot-sealing slag was substituted for cement, and mortar test blocks with different contents of hot-sealing steel slag were made, and the effect of hot-sealing steel slag addition on cement strength was studied. The results show that hot braised steel slag can be used as a cement admixture, but the content is best controlled within 20%.

关 键 词：钢渣 热浸泡 火山灰效应 水泥强度 

分 类 号：TU528.1[建筑科学—建筑技术科学]