镁质胶凝材料综述:研究进展与低碳路径探讨  

Review of Magnesium Cementitious Material:Current Developments and Low Carbon Path

作　　者：曾田 陈啸洋 王南 张婷婷[1] 关岩 毕万利 常钧[1,3] ZENG Tian;CHEN Xiaoyang;WANG Nan;ZHANG Tingting;GUAN Yan;BI Wanli;CHANG Jun(School of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China;School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China;Zhongchi Magnesium Building Materials Co.,Ltd.,of Liaoning University of Science and Technology,Anshan 114051,Liaoning,China)

机构地区：[1]大连理工大学建设工程学院,辽宁大连116024 [2]辽宁科技大学材料与冶金学院,辽宁鞍山114051 [3]辽宁科大中驰镁建材科技有限公司,辽宁鞍山114051

出　　处：《材料导报》2024年第17期58-72,共15页Materials Reports

基　　金：国家重点研发计划项目(2022YFC3803100)。

摘　　要：镁质胶凝材料具有轻质、高强、低碱、耐高温和低二氧化碳排放的特点,已被广泛应用于预制建筑、道路修复和核废料固定等领域。本文系统综述了镁质胶凝材料近年来的主要研究成果;重点介绍了氯氧镁水泥、硫氧镁水泥、水化硅酸镁水泥和磷酸镁水泥的原材料组成、水化机理、相转变和微观结构等,总结了其在碳固存、力学和耐久性等方面的研究进展,对比了上述四种水泥的性能及应用现状。最后,结合镁质胶凝材料的优势以及不足,提出了未来研究的方向和思路。我国是世界上镁资源最丰富的国家,镁质胶凝材料具有独特的性能,作为菱镁产业的重要一环,必将在低品位菱镁尾矿建材资源化利用方面大有可为。Magnesium cementitious material has the characteristics of light weight,high strength,low alkali,high temperature resistance and low carbon dioxide emissions,it is widely used in prefabricated construction,road repair,nuclear waste fixation and other fields.Here systematically reviews the main research results of magnesium cementitious material in recent years,focuses on the raw materials,hydration mechanism,phase transition and crystal microstructure of magnesium oxychloride cement,magnesium oxysulfide cement,magnesium silicate hydrate cement and magnesium phosphate cement.Then summarises the research progress in carbon sequestration,mechanical performance and durability.Furthermore,provides a comparative analysis of the performance and current applications of these four types of cement.Finally,considering the shortages and advantages of magnesium cementitious material,highlight the research thoughts and directions in the future.China has the most abundant magnesia resource in the world.As an important part of magnesite industry,magnesite cementitious material has unique properties,and will certainly have great potential in the utilization of low-grade magnesite tailings as building materials.

关 键 词：镁质胶凝材料 水化机理 耐久性 碳固存 微观结构 

分 类 号：TU525[建筑科学—建筑技术科学]