基于镁渣-水泥-脱硫石膏复合胶凝材料的砌筑砂浆制备及其性能  

Preparation and properties of masonry mortar based on magnesium slag cement desulfurization gypsum composite cementitious material

作　　者：罗立涛 冯启明[1,2] 黄阳[1,2] 孙晋睿 鲜雯 熊惠明 李椹 刘才鹏 刘柳 LUO Litao;FENG Qiming;HUANG Yang;SUN Jinrui;XIAN Wen;XIONG Huiming;LI Shen;LIU Caipeng;LIU Liu(School of Environment and Resources,Southwest University of Science and Technology,Mianyang Sichuan 621010,China;Key Laboratory of Solid Waste Treatment and Resource Recycling,Ministry of Education,Mianyang Sichuan 621010,China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]固体废物处理与资源化教育部重点实验室,四川绵阳621010

出　　处：《化工矿物与加工》2024年第8期17-22,共6页Industrial Minerals & Processing

基　　金：四川省高等学校重点实验室科研项目(SC_FQWLY-2021-Z-07)。

摘　　要：镁渣高效利用对于金属镁冶炼行业的可持续发展和环境保护具有重要意义。本文以镁渣、水泥和脱硫石膏为主要原料,设计和配制复合胶凝材料,并以此制备高性能砌筑砂浆。三元体系胶凝材料试验结果表明,以高掺量镁渣制备的胶砂试件28 d抗压强度可达35.6 MPa,脱硫石膏对镁渣-水泥胶凝体系起到了活性激发作用,尤其对28 d强度具有明显的促进作用。以镁渣-水泥-脱硫石膏复合胶凝材料制备的砌筑砂浆28 d抗压强度最高达25.32 MPa,满足JGJ/T 98-2010《砌筑砂浆配合比设计规程》中M25等级的要求。研究成果可为镁渣大规模资源化利用提供参考。The efficient utilization of magnesium slag is of great significance for the sustainable development and environmental protection of metal magnesium smelting industry.Using magnesium slag,cement,and desulfurization gypsum as the main raw materials,composite cementitious materials were designed and prepared in order to prepare high performance masonry mortar.The test results of the ternary system cementitious material showed that the 28 d compressive strength of the cementing sand specimen prepared with high content of magnesium slag can reach 35.6 MPa,in which desulfurization gypsum played an active role in stimulating the magnesium slag cement cementitious system,especially in promoting the 28 d strength.The compressive strength of masonry mortar prepared by magnesium slag,cement and desulphurized gypsum composite cementing material at 28 d could meet the requirements of M25 grade in JGJ/T 98-2010"Code for Design of Masonry Mortar Mix Proportion".The research results can provide reference for the large-scale resource utilization of magnesium slag.

关 键 词：镁渣 脱硫石膏 活性激发 复合胶凝材料 砌筑砂浆 抗压强度 

分 类 号：TD803[矿业工程—矿山开采] TQ177[化学工程—硅酸盐工业] X705[环境科学与工程—环境工程]