An investigation on the effect of SBS+Vacuum bottoms residue modification on rheological characteristics of asphalt binder

In this research, the effect of adding SBS and vacuum bottoms residue on 60/70 neat asphalt binder have been carried out using classic and superpave testing methods. Adding SBS led to increase of softening point, elastic recovery and viscosity of asphalt binder. Besides, SBS reduced the penetration...

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Bibliographic Details
Published in:	Petroleum science and technology Vol. 35; no. 22; pp. 2115 - 2120
Main Authors:	Nejad, Fereidoon Moghadas, Shahabi, Mahdi, Rahi, Mohammad, Hajikarimi, Pouria, Kazemifard, Sholeh
Format:	Journal Article
Language:	English
Published:	Abingdon Taylor & Francis 17-11-2017 Taylor & Francis Ltd
Subjects:	Asphalt BBR Deformation resistance DSR Elastic recovery Fatigue strength modified asphalt binder Rheological properties SBS superpave Test procedures vacuum bottoms residue
Online Access:	Get full text
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Summary:	In this research, the effect of adding SBS and vacuum bottoms residue on 60/70 neat asphalt binder have been carried out using classic and superpave testing methods. Adding SBS led to increase of softening point, elastic recovery and viscosity of asphalt binder. Besides, SBS reduced the penetration and ductility of specimens. Results of dynamic shear rheometer indicated that G * and G * sinδ reduced by adding the SBS content before and after aging while δ and G * /sinδ parameters increased. Therefore, adding SBS improves the permanent deformation and fatigue resistance of neat asphalt binder.
ISSN:	1091-6466 1532-2459
DOI:	10.1080/10916466.2017.1384839