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PMSS Project Details


Project ID:FHWA-PROJ-09-0048
Project Name: Asphalt Sustainability Issues: Evaluation of Long-Term Performance of Recycled Additives, Including Recycled Motor Oil, Reclaimed Asphalt Pavements, Reclaimed Asphalt Shingles, and Bioasphalts
Status: Active
Last Name:Youtcheff
First Name:Jack
Office: Office of Infrastructure Research and Development
Team:Pavement Materials Team
Roadmap/Focus area(s): Environmental Streamlining/Stewardship
Infrastructure Research and Technology Strategic Plan and Roadmap
Project Description: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.
Laboratories: Chemistry Laboratory
Start Date: September 15, 2009
End Date: December 31, 2012
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.
Test Methodology: Materials are to be characterized using spectroscopic techniques and elemental determinations.
Expected Benefits:The expected benefit is the development of an approach for estimating phase behavior of asphalt additive and asphalt blends.
Deliverables:1. Name: Solubility parameter calculator.
Product Type(s): Research report, Software
Description: Tools for assessing the tendency of asphalt and asphalt additive blends to phase separate.
2. Name: Miscibility guide.
Product Type(s): Research report, Techbrief
Description: Guidelines for blending asphalts and asphalt additives.
Project Findings: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.
Keywords: Infrastructure
Asphalt Additives
Reclaimed Asphalt Pavements
Subject Areas: Maintenance and Preservation