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Fatigue of bituminous mixtures
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2004 (English)In: Materials and Structures, ISSN 1359-5997, E-ISSN 1871-6873, Vol. 37, no 267, 202-216 p.Article in journal (Refereed) Published
Abstract [en]

This paper presents an interlaboratory test campaign organized by the RILEM 182-PEB Technical Committee. In the campaign, 11 different test methods, comprising uniaxial tension/compression, 2-, 3- and 4-point bending and indirect-tension tests, were utilized in order to investigate fatigue characteristics of a dense graded asphalt concrete mixture. The testing conditions specified were sinusoidal excitation at 10Hz and 10degreesC using controlled strain and stress modes. In total, more than 150 fatigue tests were carried out during the investigation. The fatigue test results were analyzed using both classical as well as continuum damage mechanics approaches. The fatigue test results obtained using the classical fatigue approach are considerably influenced by test type and mode of loading (controlled stress or strain) used. Consequently, this approach has limited use in realistic fatigue characterization of bituminous materials and pavement structures. In contrast to the classical approach, models founded on continuum damage theory may serve to isolate intrinsic fatigue characteristics from the influence of so-called biased effects, which are largely caused by the accelerated laboratory testing. The continuum damage models investigated may constitute steps, towards a rational mechanistic fatigue characterization model, which are important for effective future pavement design.

Place, publisher, year, edition, pages
2004. Vol. 37, no 267, 202-216 p.
National Category
Infrastructure Engineering
URN: urn:nbn:se:kth:diva-88399DOI: 10.1007/BF02481620ISI: 000221689300008ScopusID: 2-s2.0-1942443199OAI: diva2:502258
TSC import 1502 2012-02-14. QC 20120307Available from: 2012-02-14 Created: 2012-02-14 Last updated: 2012-03-07Bibliographically approved

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