Date of Award
1-30-2017
Document Type
Thesis
Degree Name
Engineering, MSE
First Advisor
Zahid Hossain
Committee Members
Ashraf Elsayed; Gaylon Baumgardner
Call Number
LD251 .A566t 2016 M34
Abstract
The objective of this study was to find out short- and long-term performance of Polyphosphoric Acid (PPA)-modified asphalt binders. To evaluate the binder performance, mechanistic, chemical and moisture susceptibility tests were done on PPA- and Styrene Butadiene Styrene (SBS)-modified asphalt binders. Mechanistic performance was analyzed by Superpave performance grade testing (AASHTO M 320), whereas chemical analysis was done by Fourier Transform Infrared Spectroscopy (FTIR) analyses and moisture susceptibility was evaluated by Surface Free Energy (SFE) techniques. Superpave testing results suggest that PPA-modified binders are more rutting and fatigue resistant than PG 64-22 binders, but use of Liquid Anti-Stripping Agents (LAA) may deteriorate the mechanistic performance. Moreover, SFE analysis did not show any significant negative effects on stripping potential. Findings of this study will be helpful for the Arkansas State Highway and Transportation Department (AHTD) for updating specifications regarding PPA modification of asphalts.
Rights Management
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Mahmud, Istiaque, "Performance Evaluation of Polyphosphoric Acid Modified Asphalt Binders" (2017). Student Theses and Dissertations. 617.
https://arch.astate.edu/all-etd/617
