New Damage Variable in Failure Analysis of Concrete
Publication: Journal of Materials in Civil Engineering
Volume 8, Issue 4
Abstract
Cracking, i.e. material separation at the moment of fracture, is inherently an irreversible process and, hence, is synonymous with material damage. In failure analysis of concrete at increasing applied load, the degree of irreversibility, i.e. material damage, must be capable of being readily quantified by experimentally measurable or mathematically defined quantities. This paper shows the development of a new damage variable to analyze the failure process of a body concrete material, which has an aspect ratio of 2.5, at monotonic uniaxial compression up to the peak load carrying capacity, σc,u. This damage variable is derived from the intrinsic characteristics of the microcrack propagation within the bulk concrete material. It is readily quantified by the experimental stress and strain data of a uniaxial compression test to ultimate failure. It possesses the predictive capability to define the degree of damage accumulation within the bulk concrete material at any stage of the applied loading.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 8 • Issue 4 • November 1996
Pages: 184 - 188
Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: Nov 1, 1996
Published in print: Nov 1996
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