If you have any problems related to the accessibility of any content (or if you want to request that a specific publication be accessible), please contact us at scholarworks@unr.edu.
Browsing Western Regional Superpave Center (WRSC) by Subject "asphalt binders"
Now showing items 1-1 of 1
-
.
.
.
Responsible Use of Polyphosphoric Acid (PPA) Modification of Asphalt Binders
(2023-02)Polyphosphoric acid (PPA) has been used to chemically modify asphalt binders to improve high temperature rheological properties, without adversely affecting low temperature rheological properties, since the early 1970s.(1) ...