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Linear viscoelastic and fatigue characteristics of styrene-butadiene-styrene modified asphalt mixtures
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Highway and Railway Engineering (closed 20110301).
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Highway and Railway Engineering (closed 20110301).
2004 (English)In: Journal of materials in civil engineering, ISSN 0899-1561, E-ISSN 1943-5533, Vol. 16, no 6, 629-638 p.Article in journal (Refereed) Published
Abstract [en]

Three styrene-butadiene-styrene coblock polymer modified asphalt concrete mixtures (70/100M5, 160/220M5, and 160/ 220M10) are characterized using complex modulus and fatigue testing. The compositions of the materials investigated are identical (aggregate, size distribution, binder, and void contents) and differ solely regarding binder characteristics. The modified binders are manufactured using two base bitumens (70/100 and 160/220) modified by a styrene-butadiene-styrene coblock polymer. The fatigue tests are carried out at three different temperatures (0, 10, and 20degreesC) using both stress- and strain-controlled modes. A continuum damage model is used to investigate its ability to characterize fatigue of polymer modified mixtures. The results indicate that the continuum damage model is suitable for characterizing the materials at the test conditions used (mode of loading, excitation amplitude, and testing temperature) in that visually similar material functions are obtained. Using statistical analysis, it was indicated that strain amplitude does not significantly influence the model parameters of the characteristic material functions. However, even though different loading conditions lead-to apparently similar material functions, the model parameter values were actually significantly affected by the testing temperature used. Predictions of fatigue path, including number of cycles to failure, based on the material functions indicate reasonable accuracy.

Place, publisher, year, edition, pages
2004. Vol. 16, no 6, 629-638 p.
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:kth:diva-40352DOI: 10.1061/(ASCE)0899-1561(2004)16:6(629)ISI: 000225114800015Scopus ID: 2-s2.0-10644283818OAI: oai:DiVA.org:kth-40352DiVA: diva2:441136
Note
QC 20110914Available from: 2011-09-14 Created: 2011-09-14 Last updated: 2017-12-08Bibliographically approved

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