Behavior of Gilsonite-Modified Hot Mix Asphalt by Wet and Dry Processes
Publication: Journal of Materials in Civil Engineering
Volume 28, Issue 2
Abstract
In tropical countries, roads built with asphalt layers must be made with bituminous mixtures containing asphalt that is reasonably stiff to increase resistance against permanent deformations, i.e., rutting. When the available asphalt is not stiff enough, an alternative is to modify it using Gilsonite. This article presents the laboratory results of tests performed on samples of Gilsonite-modified hot mix asphalts modified by wet and dry processes. Gilsonite increases the stiffness and improves the performance grade of a virgin binder at high temperatures of service. Additionally, Gilsonite-modified hot mix asphalts developed a greater strength and stiffness under monotonic and dynamic loading.
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Information
Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 2 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Aug 22, 2014
Accepted: Mar 20, 2015
Published online: Jul 28, 2015
Discussion open until: Dec 28, 2015
Published in print: Feb 1, 2016
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