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Title:Fatigue Failure Testing in Section F
Author(s):Shannon Beranek; Carpenter, Samuel H.
Subject(s):Hot Mix Asphalt, perpetual pvements, fatigue-resistant asphalt, fatigue cracking
Abstract:Project IHR-R39, titled “Validation of Design Concepts for Extended Life Hot Mix Asphalt Pavements (ELHMAP), was funded by the Illinois Department of Transportation (IDOT) to develop data in support of the philosophy of design and performance of the newly proposed concept of Perpetual Pavements (PP). The concept of a PP was to have a rut-resistant surface, a fatigue-resistant asphalt rich lower layer, and sufficient total thickness to eliminate the development of fatigue cracking. The total thickness would produce a tensile strain at the bottom of the asphalt layers that would be below 70 micro strain during the hottest period of the year. A major part of the testing was directed toward developing updated laboratory fatigue algorithms for current IDOT mixtures. The full scale test sections included a six inch thick section constructed for testing to fatigue failure. This testing was designed to illustrate the degree of conservatism involved in using the laboratory design fatigue algorithms relative to actual testing in the field. This report describes the testing and results that support the concept of healing, rest periods between wheel loads, in extending the fatigue life in the field relative to the laboratory predictions. The testing reported here supports a life extension ranging from 10 to 20 based on field crack development.
Issue Date:2009-11
Series/Report:ICT-09-058 UILU-ENG-2009-2040
Genre:Technical Report
Publication Status:published or submitted for publication
Peer Reviewed:not peer reviewed
Sponsor:ICT R39
Rights Information:No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161
Date Available in IDEALS:2013-11-06

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