Evaluation of Plastic Damage in Concrete by Acoustic Emission
Publication: Journal of Materials in Civil Engineering
Volume 7, Issue 3
Abstract
This paper presents an experimental observation of the relation between the plastic damage and the acoustic emission (AE) events in concrete subjected to uniaxial compressive loading. To examine the effect of the degree of the initial deterioration on the plastic damage, both undamaged and damaged concrete specimens were tested. In the damaged specimens, the damage was induced using different numbers of freezing-thawing cycles to achieve different initial deterioration before loading. It is found that as the plastic damage increases the activity of AE signals increases. Moreover, it is noticed that the degree of the nonlinearity of plastic damage–AE event relationship depends significantly on the initial deterioration. The current investigation may provide a new procedure for core testing to evaluate concrete deterioration because the conventional strength and Young's modulus are less sensitive to the damage.
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Published In
Journal of Materials in Civil Engineering
Volume 7 • Issue 3 • August 1995
Pages: 148 - 153
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Aug 1, 1995
Published in print: Aug 1995
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