仿生自愈合水泥砂浆的研究  

Bionical Self-healing Cement Mortar

作　　者：习志臻[1] 张雄[1] 

机构地区：[1]同济大学混凝土材料研究国家重点实验室,上海200092

出　　处：《建筑材料学报》2002年第4期390-392,共3页Journal of Building Materials

基　　金：教育部科学技术研究重点项目 (9916 1);上海市重点学科建设资助项目

摘　　要：将含有聚氨酯、丙烯酸酯等修复剂材料的空心玻璃纤维埋入水泥砂浆基体中 ,在水泥砂浆内部形成智能型仿生自愈合系统 .砂浆开裂后空心玻璃纤维断裂 ,致使修复剂流入基体 ,愈合基体微裂缝且修复损伤界面 .使用INSTRON实验机和声发射仪分别测试了砂浆愈合后的强度和质量 .结果表明 :砂浆的愈合效果明显 。Acrylate resin and polyurethane were used as crack repairing agents which were filled in hollow glass fibers emibedded in cement mortar materiats. The subsequent release of repairing agent resulted in the sealing of matrix microcracks and the rebonding of damaged interfaces. The strength and healing quality of material were tested by INSTRON equipment and acoustic emission. The test results show that the microcracks are healed by repairing agent and the toughness is improved.

关 键 词：自愈合混凝土 强度回复 声发射 断裂韧性 

分 类 号：TU528[建筑科学—建筑技术科学]