Improving the Performance-Graded Asphalt Binder Specification: Final Report

Hajj, Ramez; Filonzi, Angelo; Bhasin, Amit; University of Texas at Austin. Center for Transportation Research

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Improving the Performance-Graded Asphalt Binder Specification: Final Report

2019-05-01
By Hajj, Ramez ; Filonzi, Angelo ; Bhasin, Amit

[PDF-3.56 MB]

English

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Creators:

Hajj, Ramez ; Filonzi, Angelo ; Bhasin, Amit

Hajj, Ramez ; Filonzi, Angelo ; Bhasin, Amit Less -
Corporate Creators:

University of Texas at Austin. Center for Transportation Research
Corporate Contributors:

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration ; Texas Dept. of Transportation

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration ; Texas Dept. of Transportation Less -
Subject/TRT Terms:

[+]

Bituminous Binders Cracking Dynamic Shear Rheometer (DSR) Multiple Stress Creep And Recovery (MSCR) Test Performance-graded Asphalt Binder Performance Grading Rutting Specifications
Publication/ Report Number:

FHWA/TX-18/0-6925-1
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Technical report; September 2016–November 2018
Corporate Publisher:

University of Texas at Austin. Center for Transportation Research
Abstract:

The Performance Grading (PG) specification is currently used as the primary purchase specification and binder classification system in the state of Texas and many other parts of the world. Since its inception, binder production has evolved to include new technologies and additives that can be used to improve binder performance. However, in some cases such binders may also prematurely fail in asphalt pavements while still meeting the existing specification requirements. In light of this shortcoming with the PG specification, this project reviewed various new methods that can be utilized as alternatives or in a complimentary manner to the current specification. A variety of field and laboratory modified binders were evaluated using a suite of tests along with mixtures that incorporated these binders in order to evaluate the most effective performance indicators for asphalt binder specification. Parameters from the Multiple Stress Creep and Recovery (MSCR) test showed a good correlation with rutting of asphalt mixtures and parameters from the poker chip test showed a good correlation with cracking of asphalt binders. A method to measure low-temperature properties of the binder using a 4-mm diameter geometry with the Dynamic Shear Rheometer (DSR) was evaluated and the analytical method used with the resulting data was further developed for use as a surrogate to traditional tests. Based on the results, this study recommends the implementation of the MSCR, the 4-mm plate geometry for low temperature DSR testing in certain scenarios, and the poker chip test as an indicator for cracking resistance.
Format:

PDF
Funding:

0-6925
Collection(s):

Federal Highway Administration US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:b7948755290ca162501bb91695c9c4eae9b86be2fb7f5a6b430ee0cce74bd432
Download URL:

https://rosap.ntl.bts.gov/view/dot/42401/dot_42401_DS1.pdf
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Improving the Performance-Graded Asphalt Binder Specification: Final Report

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