alexa Effect of Used Motor Oil on the Macro and Micromechanic
E-ISSN: 2252-5211

International Journal of Waste Resources
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Research Article

Effect of Used Motor Oil on the Macro and Micromechanical Properties of Crumb Rubber Modified Asphalt

Magdy Abdelrahman, Mohyeldin Ragab* and Daniel Bergerson

Department of Civil and Environmental Engineering North Dakota State University, USA

*Corresponding Author:
Mohyeldin Ragab
Ph.D. Candidate
Department of Civil and Environmental Engineering
North Dakota State University
Tel: 701-318-4401
Fax: 701-231-6185
E-mail: [email protected]

Received date June 27, 2015; Accepted date July 21, 2015; Publisheddate July 25, 2015

Citation: Abdelrahman M, Ragab M, Bergerson D (2015) Effect of Used Motor Oil on the Macro and Micromechanical Properties of Crumb Rubber Modified Asphalt. Int J Waste Resour 5:180. doi: 10.4172/waste-resources.1000180

Copyright: © 2015 Abdelrahman M, et al. 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

The need to be more environmentally conscious has recently shifted toward the forefront of society. With this new focus on environmentally responsible behavior comes the practice of using recycled materials in construction when possible. Used motor oil (UMO) is an example of waste materials that can be utilized in numerous applications to alleviate its environmental disposal burden. In the current work, the effect of UMO on the internal structure of crumb rubber modified asphalt is investigated. This is carried out by employing rheological analysis including dynamic shear rheometer and microindentation testing. Rheological analysis was employed to determine the change in the phase angle (δ) as well as the complex modulus (G*) of the UMO modified asphalts as well as the crumb rubber modified asphalt (CRMA), in addition, temperature sweep viscoelastic analysis was employed to investigate the change in internal structure of the produced modified asphalts. Microindentation analysis was utilized to determine the hardness and elastic modulus of the modified asphalt liquid phase. Microindentation tests served to simulate the effect of UMO on the behavior of the thin asphalt layer over the aggregate which has a thickness measured in microns. Results indicate that the utilization of UMO only as a modifier to asphalt severely deteriorates the macro and micro mechanical properties of the binder. Combining CRM with UMO as modifiers to asphalt had better results. It is suggested to use UMO at a rate of 3%, or less, by asphalt weight.

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