SPTC - ODOT Workshop on: Effect of WMA and Anti-Stripping Additives on PPA-Modified Binders

June 30, 2017

SPTC - ODOT Workshop on: Effect of WMA and Anti-Stripping Additives on PPA-Modified Binders

Presenter: Rouzbeh Ghabchi, Musharraf Zaman, and Shivani Rani

Abstract: Enhancing the high-temperature PG grade of asphalt binders by using Polyphosphoric Acid (PPA) is becoming more popular due to its lower cost, compared to polymer modification. Despite its benefits, long-term performance and moisture-induced damage are major concerns associated with adding PPA to asphalt binders. The purpose of this workshop is to present the outcomes of the research conducted at the University of Oklahoma to evaluate the effect of PPA on rheology and moisture-induced damage potential of asphalt binders. The presentation will be followed by questions and discussion.