Damage‐Evolution Approach to Fatigue Cracking in Pavements
Publication: Journal of Engineering Mechanics
Volume 119, Issue 6
Abstract
An innovative approach to characterizing the resistance of asphalt concrete mixtures to fatigue‐crack propagation is presented. A fundamental equation based on the thermodynamics of irreversible processes is employed to extract parameters characteristic of the pavement's resistance to fracture. These parameters are the specific energy of damage and a dissipative characteristic of the paving mixture. The applicability of the proposed methodology has been demonstrated in view of experimental data generated for an AC‐20 paving mixture. In addition, the applicability of the present methodology has been extended to examine fatigue‐crack propagation (FCP) data reported in the literature by other researchers. It is found that the proposed model describes the FCP behavior of two asphalt mixtures over the entire range of crack driving force. The proposed methodology provides a basic rationale upon which the relationships between microstructure and/or processing conditions and resistance of pavement to fatigue‐crack propagation can be constructed. Such relationships can guide the development of paving mixtures with superior resistance to fracture and aid the lifetime assessment of load‐bearing structures manufactured from these mixtures.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 119 • Issue 6 • June 1993
Pages: 1243 - 1259
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Dec 13, 1990
Published online: Jun 1, 1993
Published in print: Jun 1993
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