The Use and Performance of Asphalt Binder Modified with Polyphosphoric Acid (PPA)
Primary Topic: Materials-Asphalt
Description: This Technical Brief provides an overview of the implication of the use of Polyphosphoric Acid as a modifier for asphalt binders and implications in relation to asphalt pavement performance.
FHWA Publication Number: FHWA-HIF-12-030
Publication Year: 2012
Document Links: PDF (file size: 1 mb)