Develop Design of Hot-Mix Cold-Laid (HMCL) Mixtures with the Superpave Gyratory Compactor
Different from patching materials, hot-mix cold-laid (HMCL) asphalt mixes are often used as a blade-on/level up material in Texas. Currently, the HMCL asphalt mixes are designed with a Texas Gyratory Compactor (TGC) and checked with the Hveem stability test. The Materials and Tests Division (MTD) of Texas Department of Transportation (TxDOT) is undertaking an initiative to design all asphalt mixes with the Superpave Gyratory Compactor (SGC) and officially phase out the TGC in the upcoming Standard Specifications Book update in 2024. As a result, there is an urgent need to study HMCL mix design with the SGC and replace the Hveem stability test with a new performance related test. The objective of this project is to establish a new HMCL mix design method with the SGC and new performance tests ensuring high quality and long-lasting HMCL mixes which will save millions of dollars of taxpayer money annually. To achieve this objective, the research team will review the literature and conduct extensive laboratory TGC, SGC, and performance tests; then develop the SGC-based HMCL mix design method including performance tests and associated criteria; and finally recommend specifications changes.
Language
- English
Project
- Status: Completed
- Funding: $210004
-
Contract Numbers:
0-7153
-
Sponsor Organizations:
Texas Department of Transportation
125 E. 11th Street
Austin, TX United States 78701-2483 -
Managing Organizations:
Texas Department of Transportation
125 E. 11th Street
Austin, TX United States 78701-2483 -
Project Managers:
Schwerdt, Tom
-
Performing Organizations:
Texas A&M Transportation Institute
Texas A&M University System
3135 TAMU
College Station, TX United States 77843-3135 -
Principal Investigators:
Zhou, Fujie
- Start Date: 20220901
- Expected Completion Date: 20231130
- Actual Completion Date: 20231130
Subject/Index Terms
- TRT Terms: Compactors; Gyratory testing machines; Hot mix asphalt; Mix design; Performance tests; Recommendations
- Subject Areas: Highways; Materials; Pavements;
Filing Info
- Accession Number: 01863347
- Record Type: Research project
- Source Agency: Texas Department of Transportation
- Contract Numbers: 0-7153
- Files: RIP, STATEDOT
- Created Date: Nov 3 2022 4:37PM