Development of a Laboratory Testing Protocol To Evaluate Alternative Materials for Use in Modifying Asphalt Binders and Alternative Materials for Use in Modifying Asphalt Mixtures

Karki, Pravat; Zhou, Fujie; Nyamuhokya, Tito; Estevanott, Moises Saca; Mraiza, Zeinab; Texas A&M Transportation Institute

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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

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Development of a Laboratory Testing Protocol To Evaluate Alternative Materials for Use in Modifying Asphalt Binders and Alternative Materials for Use in Modifying Asphalt Mixtures

2021-08-01
By Karki, Pravat ; Zhou, Fujie ; Nyamuhokya, Tito ; ...

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Creators:

Karki, Pravat ; Zhou, Fujie ; Nyamuhokya, Tito ; Estevanott, Moises Saca ; Mraiza, Zeinab

Karki, Pravat ; Zhou, Fujie ; Nyamuhokya, Tito ; Estevanott, Moises Saca ; Mraiza, Zeinab Less -
Corporate Creators:

Texas A&M Transportation Institute
Corporate Contributors:

Florida. Department of Transportation
Subject/TRT Terms:

[+]

Alternatives Analysis Aramid Fibers Asphalt Composite Materials Mixtures Polymer Asphalt
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

March 2019–September 2021
Corporate Publisher:

Texas A&M Transportation Institute
Abstract:

The objectives of this project were to develop separate approval protocols for alternative asphalt binder additives and alternative asphalt mixture additives. To develop these protocols, PG 76-22 (PMA) binder and its Superpave 12.5-mm mix with granite (i.e., control binder and mixture) and two alternatively modified asphalt PG 76-22 binders and their corresponding mixtures (one produced with a reactive terpolymer and the other produced with a bio-rejuvenator) were subjected to several rutting and cracking tests to develop the first protocol. The control mixture, the terpolymer- and bio-rejuvenator-modified mixtures, and two additional alternatively modified mixtures (produced by mixing granite aggregates, control binder with the mix of aramid fibers and Sasobit wax or the mix of aramid and polyolefin fibers) were subjected to various rutting and cracking tests to develop the second protocol. Test results showed that the FDOT-mandated Superpave performance tests of asphalt binders, the Hamburg wheel-track and Ideal cracking tests of asphalt mixtures were able to show whether alternatively modified binders and mixtures would perform equivalent to or better than the control binder or mixture. Results obtained by utilizing these protocols on one additional alternatively modified asphalt binder and two alternatively modified asphalt mixtures seconded these conclusions.
Format:

PDF
Funding:

BE719
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:16ff1293dbfed388933c3c64870db77f5d3818ae007b79b9e54b80ec0c112ceb
Download URL:

https://rosap.ntl.bts.gov/view/dot/62348/dot_62348_DS1.pdf
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Development of a Laboratory Testing Protocol To Evaluate Alternative Materials for Use in Modifying Asphalt Binders and Alternative Materials for Use in Modifying Asphalt Mixtures

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