Ultrasonic test analysis of impact damage of polypropylene fiber mortar

摘要：

　　The method recommended by ACI Committee 544 was used in this paper.Drop hammer impact tests based on mortar specimens with different contents of polypropylene fiber were carried out.The Ultrasonic test is done before and after impacting.Under different drop hammer impact times,polypropylene fiber mortar specimens damage degree was evaluate based on ultrasonic velocity.The results show that the hammering number corresponding to the impact fracture of polypropylene fiber mortar is more than ordinary mortar.The ultrasonic velocity of all specimens decreased gradually during the process of hammering,but adding the right amount ofpolypropylene fibers can effectively slow down the rate of wave speed decline.

关键词： Mortar Polypropylene fiber Drop hammer impact Ultrasonic

作者: CHEN Xiao Hong XUAN Wei Hong CHEN Yu Zhi

作者单位: Jinling Institute of Technology, Nanjing 211169, China

会议类型: 国际会议

会议名称: 3rd International Conference on Frontiers of Manufacturing and Design Science(第三届制造与设计科学前沿国际会议(ICFMD))

会议地点: 香港

会议语种:英文

页码: 324-328

在线出版日期: 2012-12-11（万方平台首次上网日期，不代表论文的发表时间）