Investigation of Rutting Performance of Asphalt Mixtures Containing Polymer Modifiers
Posted By Ahmad Hafizullah on February 19, 2011
Investigation of Rutting Performance of Asphalt Mixtures Containing Polymer Modifiers
Sureyya Tayfur, Halit Ozen, Atakan Aksoy
ISFALT Asphalt Company, Istanbul, Turkey. Department of Civil Engineering, Yıldız Technical University, Istanbul, Turkey. Department of Civil Engineering, Karadeniz Technical University, Trabzon, Turkey.
Received 29 July 2004; received in revised form 11 August 2005; accepted 12 August 2005. Available online 28 November 2005
Abstract
The purpose of this study is to evaluate mechanical properties of control and modified asphalt mixtures. Conventional and five modified asphalt mixtures were studied on hot mix asphalt permanent deformation resistance. Amorphous polyalphaolefin, cellulose fiber, polyolefin, bituminous cellulose fiber and styrene butadiene styrene were used as modifiers. Indirect tensile strength, indirect tensile, static and repeated creep and LCPC wheel tracking tests were used for different loading conditions and temperatures. Research was focused on comparing the interaction between LCPC wheel tracking and other mechanical tests. According to the LCPC wheel tracking and repeated creep test results SBS mixtures were found as the most resistance mixtures in view of the rutting. Additives performed different performance levels but showed more resistance to permanent deformation according to the conventional mixtures. As far as the static creep test results are concerned there are controversial results because conventional mixtures are better. It is thought that this result may stem from the static behavior of the load and rheological change of bitumen with modifiers.
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