Date of Award
9-4-2015
Document Type
Thesis
Degree Name
Engineering, MSE
First Advisor
Zahid Hossain
Committee Members
Ashraf Elsayed; Brandon Kemp
Call Number
LD 251 .A566t 2015 B23
Abstract
The objective of this study is to assess the viability of the use of ground tire rubber (GTR) in paving materials. In an experimental plan, a PG 64-22 binder has been modified with different contents (10%, 15%, and 20%) of GTR to prepare asphalt rubber (AR). The Fourier Transformation Infrared (FTIR) test, Atomic Force Microcopy (AFM) imaging, Superpave tests, and moisture susceptibility tests have been conducted in this study. The FTIR analysis revealed the presence of various alkanes, and amines groups in unmodified and GTR-modified binders, respectively. The AFM image analysis showed that there are ‘bee-like’ structures in the PG 64-22 binder that were densified with addition of GTR. The Superpave test results showed that GTR addition increased stiffness and rutting resistance of binder. Moisture susceptibility analysis showed that the GTR addition increased the surface free energy, cohesive energy, and compatibility ratio, which are desired to provide moisture damages resistance. Based on the findings of this study, it can be concluded that GTR is a viable and a better alternative of commonly used polymer modifiers in paving materials.
Rights Management
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Bairgi, Biswajit Kumar, "Viability Assessment of the Use of Ground Tire Rubber in Asphalt Pavements" (2015). Student Theses and Dissertations. 731.
https://arch.astate.edu/all-etd/731
