磷酸镁水泥抗冲击性能试验研究  

Experimental study on shock resistance of magnesium phosphate cement

作　　者：李悦[1] 施同飞 白伟亮[1] 于腾[1] 

机构地区：[1]北京工业大学城市与工程安全减灾教育部重点实验室,北京100124

出　　处：《功能材料》2015年第12期12053-12056,共4页Journal of Functional Materials

基　　金：教育部"新世纪优秀人才支持计划"资助项目(NCET-12-0605);北京市属高等学校高层次人才引进与培养计划资助项目(CIT&TCD20150310)

摘　　要：磷酸镁水泥是一种由氧化镁、磷酸盐和缓凝剂等按一定比例混合而成,在室温下通过化学反应形成快硬高强的新型胶凝材料。研究掺加了不同掺合材料的磷酸镁水泥在冲击力作用下的性能,并结合SEM分析磷酸镁水泥冲击性能变化的原因。研究表明,磷酸镁水泥的抗冲击性能较差,掺合料不同对其冲击性能有一定影响。由SEM分析,可知抗冲击性能较好的磷酸镁水泥,内部细微裂缝变少,结构更加紧密。Magnesium phosphate cement was made by mixing magnesium oxide,phosphates and retarder,forming a new type of fast hardening and high strength cementitious materials through chemical reactions at room temperature. Magnesium cement performance under impact force of phosphoric acid were studied,combined with SEM analysis of the reasons of magnesium phosphate cement impact properties changing. Research shows that the impact resistance of magnesium phosphate cement was poor and different admixtures have some impact on its performance. There were fewer minor cracks and more closely structure inside magnesium phosphate cement of the better impact resistance by SEM analysis.

关 键 词：磷酸镁水泥 抗冲击性能 改善 机理 

分 类 号：TU528.31[建筑科学—建筑技术科学]