Effectiveness of linear amplitude sweep (LAS) asphalt binder test in predicting asphalt mixtures fatigue performance

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Sabouri, M

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Type of Document: Article
DOI: 10.1016/j.conbuildmat.2018.03.146
Publisher: Elsevier Ltd , 2018
Abstract:
In this research, Linear Amplitude Sweep (LAS) test was conducted on several asphalt binders modified by different percentages of gilsonite and Styrene-Butadiene-Styrene (SBS) polymer. Asphalt mixtures were also made from some of the study binders and tested for fatigue resistance using Four-point Bending Beam (FBB) fatigue test. The results showed that a strong correlation exists between LAS and FBB rankings at all the tested strain levels. Also, SHRP binder fatigue index (G∗sinδ), as a traditional binder fatigue index, was evaluated which did not show a strong correlation with either LAS or FBB tests. It was concluded that LAS test seems to be an effective binder fatigue test in predicting asphalt mixtures’ fatigue performance. © 2018 Elsevier Ltd
Keywords:
Asphalt binder ; Asphalt mixture ; Binder modification ; Fatigue performance ; Four-point bending beam (FBB) ; Gilsonite ; Linear amplitude sweep (LAS) ; Styrene-butadiene-styrene (SBS) ; Bending machines ; Binders ; Butadiene ; Fatigue testing ; Mixtures ; Styrene ; Asphalt binders ; Binder modifications ; Four point bending ; Linear amplitude ; Styrene butadiene styrenes ; Asphalt mixtures
Source: Construction and Building Materials ; Volume 171 , May , 2018 , Pages 281-290 ; 09500618 (ISSN)
URL: https://www.sciencedirect.com/science/article/abs/pii/S0950061818306457