Standardization of SIP Calculation for Hamburg Wheel Tracking Test
This project aimed to develop software to standardize and automate the calculation of stripping inflection point (SIP) from the Hamburg Wheel Tracking Test (HWTT) for evaluating the moisture susceptibility of asphalt mixtures. A survey of state highway agencies (SHAs) was conducted to collect information on their use of HWTT to evaluate asphalt mixtures. Based on the survey responses and consultations with HWTT equipment manufacturers, seven SIP calculation methods were identified, synthesized, and critically reviewed for comparison. These efforts resulted in selecting the most robust method for software development. Finally, a web-based program, named HWTTXpert, was developed through alpha testing at the National Center for Asphalt Technology (NCAT) at Auburn University and beta testing with 12 SHAs and three equipment manufacturers. The program is now accessible at http://HWTTXpert.eng.auburn.edu, with login credentials available upon request.
- Record URL:
Language
- English
Project
- Status: Completed
- Funding: $47,500.00
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Contract Numbers:
1036333 WO#08
- Sponsor Organizations: St. Paul, MN United States 55155
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Managing Organizations:
Minnesota Department of Transportation
395 John Ireland Boulevard
St Paul, MN United States 55155 -
Performing Organizations:
Auburn University
National Center for Asphalt Technology
310 Sanford Hall
Auburn, Alabama United States 36849-5131 -
Principal Investigators:
Yin, Fan
- Start Date: 20240116
- Expected Completion Date: 20250930
- Actual Completion Date: 20251001
Subject/Index Terms
- TRT Terms: Asphalt mixtures; Calculation; Pavement stripping; Software
- Identifier Terms: Hamburg Wheel Tracking Device
- Subject Areas: Data and Information Technology; Highways; Pavements;
Filing Info
- Accession Number: 01989396
- Record Type: Research project
- Source Agency: Minnesota Department of Transportation
- Contract Numbers: 1036333 WO#08
- Files: RIP, STATEDOT
- Created Date: May 15 2026 5:08PM