Long-term Properties of Aeolian Sand-magnesium Oxychloride Cement Composites and Its Engineering Application

作     者：常成功 DONG Jinmei ZHENG Weixin WEN Jing 阎峰云 肖学英 AN Lingyun CHANG Chenggong;DONG Jinmei;ZHENG Weixin;WEN Jing;YAN Fengyun;XIAO Xueying;AN Lingyun

作者机构：State Key Laboratory of Advanced Processing and Recycling of Non-ferrous MetalsLanzhou University of TechnologyLanzhou730050China Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake ResourcesQinghai Institute of Salt LakeChinese Academy of SciencesXining810008China Key Laboratory of Salt Lake Resources Chemistry of Qinghai ProvinceXining810008China Qinghai Provincial Key Laboratory of Nanomaterials and TechnologyCollege of Physics and Electronic Information EngineeringQinghai Minzu UniversityXining810007China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2023年第38卷第4期

页      面：842-848页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Funded by the Applied Basic Research in Qinghai Province(No.2021-ZJ-737) the Excellent Demonstration Courses for Graduate Students of Qinghai Minzu University(No.JK-2022-09) the Top Talents of‘Kunlun Talents High-end Innovation and Entrepreneurship Talents’of Qinghai Province 

主　　题：magnesium oxychloride cement aeolian sand mechanical properties micro morphology phase composition 

摘      要：In order to prepare a new material with long-term stable performance,low cost,easy construction,and ecological environmental protection,the influence of aeolian sand on the compressive and flexural strength as well as micro morphology and phase composition of magnesium oxychloride cement(MOC)was *** experimental results indicate that,with the increase of content of doping sand,the compressive strength and flexural strength of MOC decrease ***,when the quality ratio of aeolian sand and light burned magnesia powder is 1:8,the performance meets the actual engineering ***,the compressive strength of MOC is not less than 18 MPa,and flexural strength is not less than 4 ***,within 12 months of age,the compressive strength and flexural strength are *** is no obvious change in phase composition,and its main phase is still 5·1·8 *** appearance changes from needle-like to gel-like *** on engineering applications,it is found that when the novel sand-fixing material is used in the field for one year,its macroscopic feature is not damaged,compressive strength and flexural strength are also more stable,phase composition negligibly changes,and micro morphology has also been turned into be gellike *** further confirm the long-term stability and weather resistance of MOC doping aeolian sand,providing theoretical and technical support for the widely application of MOC in the field of sand fixation in the future.