Experimental Study on Acoustic Emission Characteristics of Splitting Damage Processes for Different Ages of Concrete
A total of 18 specimens damage processes of concrete under split load in 1d, 3d, 5d, 7d, 14d and 28d ages are monitored by acoustic emission (AE) technique and corresponding typical AE characteristics are summarized. The results show that splitting tensile strength of concrete and the number of AE hits are both showing a gradual increase with the growth of age. During the process of splitting failure of concrete specimens in 14d and 28d, AE hits in higher duration and amplitude are collected, It shows that the older concretes tends to release more energy, at last, AE parameters which are in higher correlation with the development of mechanical properties for early age concrete are given. Related research conclusions can provide the foundation for the research of strength development and damage mechanism of early age concretes.
Concrete Early age Acoustic emission (AE) Split crack Damage characteristics
Yan Wang Sheng Xing Wu Shuo Chen Yao Wang Bao Long Wei
College of Civil and Transportation Engineering, Hohai University, No. 1 Xikang Road, Nanjing,Jiangs Jinling Institute of Technology, No. 99 Hongjing Road, Nanjing,Jiangsu, P. R. China, 211169
国际会议
上海
英文
976-980
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）