Evaluation of asphalt concrete mixtures for railway track

•The performance of asphalt mixtures with PG64-22 and two modified asphalt was evaluated.•Various asphalt mixture performance tests were conducted on the three mixtures.•The performance of modified mixtures was dominant in every aspects.•The behaviors of the two modified mixtures were very competiti...

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Veröffentlicht in:Construction & building materials 2014-12, Vol.73, p.13-18
Hauptverfasser: Lee, Seong-Hyeok, Lee, Jin-Wook, Park, Dae-Wook, Vo, Hai Viet
Format: Artikel
Sprache:eng
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Zusammenfassung:•The performance of asphalt mixtures with PG64-22 and two modified asphalt was evaluated.•Various asphalt mixture performance tests were conducted on the three mixtures.•The performance of modified mixtures was dominant in every aspects.•The behaviors of the two modified mixtures were very competitive.•The modified mixtures could performed well for in railway track. In this study, the performance of three asphalt concrete mixtures for railway track using three different asphalt binders which are PG64-22, crumb rubber modified (CRM) asphalt binder, and styrene–butadiene–styrene (SBS) modified asphalt binder was investigated in terms of moisture susceptibility, permanent deformation, and fatigue cracking of asphalt concrete mixture. Dynamic modulus and uniaxial creep test were conducted to characterize the material properties of asphalt mixtures. The results indicate that asphalt mixtures containing crumb rubber and SBS show better performance compare with the PG64-22 binder.
ISSN:0950-0618
DOI:10.1016/j.conbuildmat.2014.09.053