Use of X-Ray Fluorescence (XRF) to Determine Tire Rubber Content in Asphalt Binders
Tire rubber is required in certain asphalt binders; e.g., AC-205TR, used for chip seal construction. These binders are specified and used in several districts across the state. Current Texas Department of Transportation (TxDOT) Standard Specification Item 300, Asphalts, Oils, and Emulsions, includes using test procedure Tex-533-C, Determining Polymer Additive Percentages in Polymer Modified Asphalt Cements. This test procedure is only performed in the TxDOT Materials and Tests Division (MTD). This test can be implemented in the field with a portable X-Ray Fluorescence (XRF) device and test procedure Tex-533-C can be used in conjunction with a calibration chart to test and obtain a quantitative estimate of tire rubber at the district level. The research team will make this device available to district personnel and to train them to use the device on a routine basis. The research team will revise test procedure Tex-533-C, if needed, to account for procedures to use in the field since the device is portable.
Language
- English
Project
- Status: Completed
- Funding: $217822
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Contract Numbers:
0-7168
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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:
Jensen, Darrin
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Performing Organizations:
Center for Transportation Research
3925 W. Braker Lane
Austin, TX United States 78759 -
Principal Investigators:
Bhasin, Amit
- Start Date: 20221005
- Expected Completion Date: 20231231
- Actual Completion Date: 20231231
Subject/Index Terms
- TRT Terms: Binder content; Chip seals; Quantitative analysis; Rubber; Test procedures; Tires; X ray fluorescence
- Subject Areas: Highways; Materials; Pavements;
Filing Info
- Accession Number: 01863367
- Record Type: Research project
- Source Agency: Texas Department of Transportation
- Contract Numbers: 0-7168
- Files: RIP, STATEDOT
- Created Date: Nov 4 2022 10:43AM