U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
|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|
|Start Date:||September 15, 2009|
|End Date:||December 31, 2012|
|Office:||Office of Infrastructure Research and Development|
|Team:||Pavement Materials Team [HRDI-10]|
|Program:||Innovative Pavement Research and Deployment|
|Roadmap/Focus area(s):||Environmental Streamlining/Stewardship|
|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.|
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.
|Product Type:||Research report|
|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.|
|FHWA Topics:||Research/Technologies--Turner-Fairbank Highway Research Center (TFHRC)|
Reclaimed Asphalt Pavements
|FHWA Disciplines:||Pavement and Materials
|Subject Areas:||Maintenance and Preservation