Evaluation of Non-SBS Modified Binders Using the Multiple Stress Creep Recovery Test

Mata, David; Salari, Saman; Louisiana State University. Department of Civil and Environmental Engineering; Louisiana Transportation Research Center

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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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Evaluation of Non-SBS Modified Binders Using the Multiple Stress Creep Recovery Test

2022-10-01
By Mata, David ; Salari, Saman

[PDF-2.17 MB]

English

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Details:

Creators:

Mata, David ; Salari, Saman

Mata, David ; Salari, Saman Less -
Corporate Creators:

Louisiana State University. Department of Civil and Environmental Engineering ; Louisiana Transportation Research Center

Louisiana State University. Department of Civil and Environmental Engineering ; Louisiana Transportation Research Center Less -
Corporate Contributors:

Louisiana. Department of Transportation and Development ; United States. Department of Transportation. Federal Highway Administration

Louisiana. Department of Transportation and Development ; United States. Department of Transportation. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Benefit Cost Analysis Binders Creep Properties Evaluation And Assessment Multiple Stress Creep Recovery (MSCR) Test Styrene Butadiene Styrene
Publication/ Report Number:

FHWA/LA.17/583
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report [12/15-07/17]
Corporate Publisher:

Louisiana. Department of Transportation and Development
Abstract:

The Multiple Stress Creep Recovery (MSCR) test can characterize polymer-modified asphalt binders and correlates well with the mixture rutting parameters. The MSCR is able to complement a suite of additional binder tests, namely Dynamic Modulus, Phase Angle, and “PG-Plus” tests. A recently-completed MSCR study conducted by the LTRC recommended that the DOTD switch from the PG-plus test to AASHTO T350 (MSCR based asphalt binder specifications). The previous research study focused on mainly elastomeric polymer (SBS) and some crumb rubber and latex modified (non-SBS) binders. However, due to the limited availability of crumb rubber binders, a specification was unable to be established for the non-SBS modified binders. The objectives of this research are to further support the initial MSCR study and to characterize the elastic response of non-SBS modified binders (i.e., crumb rubber and latex) used in DOTD asphalt mixtures using the MSCR test. Additionally, this research was tasked to review current PG 70-22 binder specifications as many SBS and non-SBS binders were unable to pass current DOTD MSCR specifications. This study found that the MSCR test has the capability to characterize the performance of non-SBS modified binders used in Louisiana. Furthermore, it was concluded that PG 70-22 binder specifications were too strict. The authors recommend an adjustment of PG 70-22 binder specifications.
Format:

PDF
Funding:

16-4B
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:891a92789fb563f5fb959bf199f006396a3bf83889810f94a33b6812ad975ea8
Download URL:

https://rosap.ntl.bts.gov/view/dot/64629/dot_64629_DS1.pdf
File Type:

No Additional Files

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Evaluation of Non-SBS Modified Binders Using the Multiple Stress Creep Recovery Test

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