Evaluation of Fracture Process in Concrete by Means of Acoustic Approaches

Proceedings

Asaue, Hisafumi¹  Shiotani, Tomoki²  Hashimoto, Katsufumi³ 

[1] Author to whom correspondence should be addressed.;Dept. Civil & Earth Resources Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8540, Japan;Presented at the 18th International Conference on Experimental Mechanics (ICEM18), Brussels, Belgium, 1–5 July 2018

关键词: concrete;    wheel loads;    acoustic approaches;    fatigue failure;    fracture process;   

DOI  :  10.3390/ICEM18-05388

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Through the life cycle of civil infrastructures, quality assessments shall be implemented when construction, in-service, before/after repair and so forth; however, there are no decisive techniques to evaluate inside of structures non-destructively. The authors have developed an advanced measurement method using tomographic approaches. With these advanced technologies, internal damage or defects can be visualized as a distribution of elastic wave parameters such as velocities so that damage identification consisting of locations and damage degree would be possible. In the paper, fracture processes of concrete decks are visualized by the acoustic approaches. Specifically, RC slabs with/without water supply subject to wheel loads are cyclically damaged with monitoring acoustic approaches. As a result, depending on the water condition, different pattern of fracture progress can be confirmed.

【 授权许可】

CC BY