New Generation HMA Mix-Design Procedures and Specifications for Texas
The Texas Department of Transportation (TxDOT) has introduced the Hamburg wheel tracking test into routine hot-mix asphalt (HMA) mix designs in order to minimize the risk of designing mixes with either rutting or stripping problems. This shift has prompted designers to move to stiffer asphalt-binder grades (e.g., PG 70-22S and PG 76-2). In addition, the increasing use of recycled materials has raised concerns that the typical mixes are now drier, more difficult to compact, and more susceptible to premature cracking. This project developed alternative mix-design approaches that will optimize HMA field performance, particularly with respect to cracking.
- Summary URL:
- Summary URL:
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Corporate Authors:
Texas A&M University, College Station
Texas Transportation Institute
College Station, TX United States 77843-3135Texas Department of Transportation
Research and Technology Implementation Office, P.O. Box 5080
Austin, TX United States 78763-5080Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Scullion, Tom
- Walubita, Lubinda F
- Das, Gautam
- Tanvir, Hossain
- Publication Date: 2012-8-31
Language
- English
Media Info
- Media Type: Web
- Features: Photos;
- Pagination: 2p
Subject/Index Terms
- TRT Terms: Asphalt pavements; Cracking; Dense graded aggregates; Hot mix asphalt; Mix design; Pavement performance; Recycled materials
- Identifier Terms: Hamburg Wheel Tracking Device
- Geographic Terms: Texas
- Subject Areas: Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 01470549
- Record Type: Publication
- Report/Paper Numbers: 0-6132
- Files: TRIS, ATRI, USDOT, STATEDOT
- Created Date: Jan 24 2013 9:08AM