Experimental study on concrete damage location by Computerized tomography and Acoustic Emission technology

Jinghong Liu; Jian Xie; Yongjian Liu; Panfei Shi

doi:10.3221/IGF-ESIS.46.32

Experimental study on concrete damage location by Computerized tomography and Acoustic Emission technology

Authors

Jinghong Liu School of Civil Engineering, Tianjin University, Tianjin 300350, China; Hebei Construction group Co., Ltd, Baoding 071051, China; College of Urban and Rural Construction, Agricultural University of Hebei, Baoding 071001, China
Jian Xie School of Civil Engineering, Tianjin University, Tianjin 300350, China
Yongjian Liu Hebei Construction group Co., Ltd, Baoding 071051, China
Panfei Shi Anyang Architectural Design & Research Institute, Anyang 455000, China

DOI:

https://doi.org/10.3221/IGF-ESIS.46.32

Keywords:

Concrete, Three-Dimensional Meso Model, CT Test, Damage Location

Abstract

In order to solve the technical problem of damage localization in the concrete damage process, the Computerized Tomography (CT) scanning test and Acoustic Emission (AE) damage localization test was carried out under uniaxial compression. In addition to the three-dimensional meso model, the porosity variation law of concrete pore or cracks at different loading stages are obtained. A damage variable is created based on CT images and AE damage points. A damage variable based on CT image and AE damage point is established. The results show that the change of porosity, pore volume and damage variable is consistent with the loading process. The rapid increase of concrete pore volume and damage variable can be the precursor of concrete damage. The whole process of the development and evolution of concrete cracks was observed and analyzed comprehensively by using the three-dimensional reconstruction images and acoustic emission damage location map. A new method for analyzing the evolution and localization of cracks in concrete is presented.

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Published

27-09-2018

Issue

Vol. 12 No. 46 (2018): October 2018

Section

Miscellanea

License

Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

Open Access Statement

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How to Cite

Experimental study on concrete damage location by Computerized tomography and Acoustic Emission technology. (2018). Frattura Ed Integrità Strutturale, 12(46), 352-360. https://doi.org/10.3221/IGF-ESIS.46.32