赤泥、电解锰渣复合激发钢渣活性的研究  

Study on activation of steel slag by red mud and electrolytic manganese slag composite

作　　者：陈平[1,2,3,4] 梁康 赵艳荣 刘荣进[1,2,3,4] 韦家崭 周宏研[1,3] CHEN Ping;LIANG Kang;ZHAO Yanrong;LIU Rongjin;WEI Jiazhan;ZHOU Hongyan(College of Materials Science and Engineering Guilin University of Technology,Guilin 541004,China;Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials,Guilin 541004,China;Guangxi Key Laboratory of New Energy and Energy Conservation,Guilin 541004,China;Guangxi Collaborative Innovation Center for Prospecting and Material Development of Non-ferrous Metal Concealed Deposits, Guilin University of Technology,Guilin 541004,China)

机构地区：[1]桂林理工大学材料科学与工程学院,广西桂林541004 [2]桂林理工大学广西有色金属隐伏矿床勘查及材料开发协同创新中心,广西桂林541004 [3]广西有色金属及特色材料加工重点试验室,广西桂林541004 [4]广西建筑新能源与节能重点实验室,广西桂林541004

出　　处：《混凝土》2018年第10期67-69,73,共4页Concrete

基　　金：广西中青年教师基础能力提升项目(2017KY0250);国家自然科学基金(51362007)

摘　　要：选用赤泥、电解锰渣复合激发钢渣活性,系统研究不同比例复合激发剂对钢渣活性的影响以及激发机理。利用XRD和SEM对钢渣胶凝材料水化产物进行矿物相分析和微观表征,比较不同龄期的钢渣活性指数。结果表明,当钢渣、赤泥、电解锰渣三者的质量配合比为3∶1∶2时,对钢渣活性激发效果最佳,钢渣7 d的活性指数从46%提高到82%,28 d的活性指数从61%提高到82%。赤泥、电解锰渣复合激发剂能够促进钢渣水化产物中C-S-H凝胶、AFt晶体的形成,减少了Ca(OH)_2的形成,增大了钢渣水化浆体的密实度,从而提高了钢渣的活性。Red mud and manganese slag were combined to stimulate the activity of steel slag.The effect of different proportions of compound activators on the steel slag activity and the activation mechanism were studied systematically.The microstructures and mineral facies analysis of the hydration products of steel slag cementitious materials were carried out by XRD and SEM.The activity index of steel slag at different ages was compared.The results showed that when the ratio of steel slag,red mud and electrolytic manganese slag is 3∶1∶2,the activity of steel slag is the best.The activity index of steel slag 7 d increased from 46%to 82%,and the activity index of 28 d increased from 61%to 82%.the compound activator of red mud and electrolytic manganese slag can promote the formation of hydrated calcium silicate gel and the formation of ettringite in the hydration products of steel slag,and increase the compactness of steel slag hydrated paste,Thus,the activity of steel slag is improved.

关 键 词：赤泥 电解锰渣 复合激发 钢渣活性 

分 类 号：TU528.041[建筑科学—建筑技术科学]