Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 123, Issue -, Pages 143-152Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2016.06.138
Keywords
Self-healing; Concrete; Cracks; Ultrasonic wave speed; 3D microscopy; X-ray microtomography
Categories
Funding
- GIS LiRGeC (France's Loire Valley Region)
- Regional Council of France's Loire Valley Region
- Conseil general de Loire-Atlantique
- French government
- FEDER (European Union)
Ask authors/readers for more resources
In this work the non-destructive monitoring of the self-healing progress of cracked mortars is presented through the use of three combined methods: nonlinear Coda Wave Interferometry, 3D microscopy and Xray computed microtomography (CT). The aim of the acoustic method is to compare, at various healing stages, both the ultrasonic velocity variations and decorrelation coefficients between a reference coda signal and a signal perturbed by a high level lower-frequency elastic wave. The decrease in the relative variation of the extracted nonlinearities demonstrates its ability to accurately monitor global crack filling. 3D microscopy also reveals this capability. Measurement results of these two techniques agree for the influence of age at cracking on healing potential. In reducing the voxel size to 12 pm, X-ray CT images confirm the creation of localized bridges between crack faces and provide information on their location. (C) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available