Responsible Use of Polyphosphoric Acid (PPA)

Baumgardner, Gaylon; Hand, Adam J. T.; Hajj, Elie Y; Aschenbrener, Tim

i

Responsible Use of Polyphosphoric Acid (PPA)

2023-02-01
By Baumgardner, Gaylon ; Hand, Adam J. T. ; Hajj, Elie Y

File Language:

English

Details

Creators:

Baumgardner, Gaylon ; Hand, Adam J. T. ; Hajj, Elie Y ; Aschenbrener, Tim
Corporate Creators:

University of Nevada, Reno. Department of Civil and Environmental Engineering
Corporate Contributors:

United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements
Subject/TRT Terms:
Publication/ Report Number:

FHWA-HIF-23-005
Resource Type:

Tech Report
Right Statement:

Public Domain
Geographical Coverage:

United States
Edition:

Final Report
Contracting Officer:

Aschenbrener, Timothy B.
Corporate Publisher:

United States. Federal Highway Administration. Office of Preconstruction, Construction, and Pavements
Abstract:

Polyphosphoric acid (PPA) is a chemical modifier employed to improve high temperature rheological properties without adversely affecting low temperature rheological properties that has been used since the early 1970s.(1) Implementation of Superpave performance-grade (PG) asphalt binder acceptance specifications lead to use of PPA to aid in meeting rheological parameters of some polymer modified asphalt binders. PPA has also been used as a binder modifier to extend the asphalt binder range between the high and low temperature performance limits of the specification. This report provides information to supplement existing publications communicating responsible use of Polyphosphoric Acid (PPA) in asphalt binder formulations. Information is provided on current uses of PPA, available qualitative and quantitative methods to detect presence of phosphorus in asphalt binders, and suggestions as to how phosphorus might indicate the presence and amount of PPA in asphalt binders.
Format:

PDF
Funding:

693JJ31850010
Download URL:

https://rosap.ntl.bts.gov/view/dot/75220/dot_75220_DS1.pdf
File Type:

[PDF - 781.20 KB]
Collection(s):

Federal Highway Administration
Main Document Checksum:

urn:sha-512:a5347c26c6b16887d7b3f90f85574140c64adf9e66dfad1a35376eeded385f20d99997b726239d41dd704283a8c82e028fae83c9dbcc66b7532718c92f011b17

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.