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Asphalt Sustainability Issues: Evaluation of Long-Term Performance of Recycled Additives, Including Recycled Motor Oil, Reclaimed Asphalt Pavements, Reclaimed Asphalt Shingles, and Bioasphalts

Project Information

Project ID: 
Project Status: 
Start Date: 
Tuesday, September 15, 2009
End Date: 
Monday, December 31, 2012
FHWA Program: 
FHWA Subprogram: 
Long-Term Infrastructure Performance Program
FHWA Activity: 
Long-Term Pavement Performance
TRT Terms: 
Infrastructure; Research; Materials; Asphalt; Asphalt Additives; Reclaimed Asphalt; Pavements; Solubility
FHWA Discipline: 
Pavement and Materials
Subject Area: 
Maintenance and Preservation, Materials, Research

Contact Information

First Name: 
Last Name: 
(202) 493-3232
Email Address: 
Infrastructure Materials Team
Office of Infrastructure Research and Development
Office Code: 

Project Details

Project Abstract: 

The computer program for calculating solubility parameters is based on (a) elemental composition and aromaticity and (b) group (chemical functional groups) contributions. Solubility parameters for blended material are needed to generate phase behavior diagrams.


The key project objectives are:

(1) Develop a computer program for calculating solubility parameters of asphalts, asphalt components, and additives.

(2) Use solubility parameters to predict phase behavior tendency of asphalt and asphalt-additive blends.

Project Outputs: 

The Solubility Calculator provides a good estimate of solubility parameters for binders and polymers; however, the values for most asphalt binders are nearly the same. The application will be much more useful when applied to asphalt components, such as maltenes (and their subfractions) and asphaltenes.