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Petroleum Science and Technology Volume 35, 2017 - Issue 1
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Original Articles

Viscoelastic fatigue resistance of asphalt binders modified with crumb rubber and styrene butadiene polymer

Mahmoud AmeriSchool of Civil Engineering, Iran University of Science and Technology, Tehran, Iran
,
Mohammad Reza SeifHighway and Transportation Engineering, School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran
,
Massoumeh AbbasiDepartment of Chemistry, Faculty of Science, East Tehran Branch, Islamic Azad University, Tehran, IranCorrespondence[email protected]
&
Alireza Khavandi KhiaviDepartment of Civil Engineering, Zanjan University, Zanjan, Iran
Pages 30-36 | Published online: 29 Dec 2016
 
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ABSTRACT

In the present research study, the fatigue behavior of modified asphalt with crumb rubber (CR) and styrene-butadiene-styrene (SBS) are investigated. Each of these additives was mixed with a 85–100 neat bitumen at two different dosages. The time sweep test was used to investigate the viscoelastic fatigue properties of asphalt binders in terms of energy dissipation. Linear amplitude sweep tests were conducted to study the fatigue life of asphalt binders under varying loads based on the concepts of viscoelastic continuum damage mechanics. Results showed that adding CR and SBS can enhance the fatigue resistance of modified asphalts based on the energy approach and viscoelastic continuum damage analysis.

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