Responsible Use of Polyphosphoric Acid (PPA)

Baumgardner, Gaylon; Hand, Adam J. T.; Hajj, Elie Y; Aschenbrener, Tim; University of Nevada, Reno. Department of Civil and Environmental Engineering

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Responsible Use of Polyphosphoric Acid (PPA)

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

[PDF-781.20 KB]

English

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Creators:

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

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

[+]

Asphalt Additives Binder Content Binders Pavement Performance Phosphoric Acid
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
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:919660bb8a06c77285d9bb000da84933345c6b545a7ce89206406c98c8428522
Download URL:

https://rosap.ntl.bts.gov/view/dot/75220/dot_75220_DS1.pdf
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Responsible Use of Polyphosphoric Acid (PPA)

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