alexa New Study on Improved Performance of Paving Asphalts by Crumb Rubber and Polyethylene Modification
ISSN: 2169-0022

Journal of Material Sciences & Engineering
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Research Article

New Study on Improved Performance of Paving Asphalts by Crumb Rubber and Polyethylene Modification

Mohamed O Sulyman*, Maciej Sienkiewicz and Jozef Haponiuk

Department of Polymer Technology, Chemical Faculty, Gdansk University of Technology, Poland

*Corresponding Author:
Mohamed O Sulyman
Department of Highway Engineering
Faculty of Civil and Environmental Engineering
Gdansk University of Technology, Poland
Tel: +4858-347-1147
Fax: +4858-347-1250
E-mail: [email protected]

Received Date: September 28, 2013; Accepted Date: December 17, 2013; Published Date: December 22, 2013

Citation: Sulyman MO, Sienkiewicz M, Haponiuk J (2013) New Study on Improved Performance of Paving Asphalts by Crumb Rubber and Polyethylene Modification. J Material Sci Eng 2:133. doi: 10.4172/2169-0022.1000133

Copyright: © 2013 Sulyman MO. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Conversion of Crumb Rubber Tires (CRT) and waste plastics to functional materials has been shown in this research study as a feasible approach for the improvement of some physical properties of asphalt. The rheological study of the modified asphalt is made through softening point temperature, penetration point, and viscosity tests.
In the present study, CRT and Low Density Polyethylene (LDPE) (plastic wastes) were chosen to be the materials of choice to blend with the virgin asphalt. The reclaimed rubber in the form of powder having a particle size below 0.8 mm was used as an additive to liquid asphalt using the Hot Mix Asphalt Process (HMA) at 180.0 ± 2.0°C with a high-speed stirrer rotating at a speed of 3000 rpm for 60 min. For a consistent mix, the blending operations were performed with different CR and LDPE contents; they were 3.0%, 5.0%, 10.0% and 15.0% by weight. LDPE-CR composite was also added to the virgin asphalt at 1:1, 1:1.5, 1:2, and 1:3 ratios. The results of this research study have indicated that these modified asphalt patterns are characterized by having softening point temperatures and penetration points leading to suitable Penetration Indexes (PI) in comparison with virgin asphalt binder. The viscosity of virgin asphalt was also enhanced with the addition of additives. Best results were obtained when CR, LDPE, and CR-LDPE composite concentrations were attained below 10.0% with most at 5.0%. Determining the number and identities of components in the modified asphalt mixture by Thin Layer Chromatography (TLC) and phase distributions of micrographs from Scanning Electron Microscopy (SEM) was also studied.

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