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Petroleum Science and Technology Volume 35, 2017 - Issue 22
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Original Articles

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

Fereidoon Moghadas Nejad Professor, Department of Civil & Environmental Engineering, Amirkabir University of Technology, Tehran, Iran
,
Mahdi ShahabiM.Sc of Civil Engineering, Ministry of Roads and Urban Development, Boushehr, Iran
,
Mohammad RahiM.Sc of Polymer Engineering and Manager of R&D Department of Pasargad Oil Company, Tehran, Iran
,
Pouria HajikarimiResearch Assistant and Head of Construction Research Center, Instructor and Faculty member, Department of Civil Engineering, Qazvin Branch, Islamic Azad University, Qazvin, IranCorrespondence[email protected]
&
Sholeh KazemifardPh.D of Applied Chemistry and Member of Renewable Laboratory, Department of Chemistry, Amirkabir University of Technology, Tehran, Iran
Pages 2115-2120 | Published online: 27 Nov 2017
 
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ABSTRACT

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.

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