Evaluation of Asphalt Binder Rejuvenators for Use in Recycled Asphalt

Rodezno, Carolina; Moraes, Raquel; Fortunatus, Mawazo; Yin, Fan; Auburn University. National Center for Asphalt Technology

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Evaluation of Asphalt Binder Rejuvenators for Use in Recycled Asphalt

2021-08-01
By Rodezno, Carolina ; Moraes, Raquel ; Fortunatus, Mawazo ; ...

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Creators:

Rodezno, Carolina ; Moraes, Raquel ; Fortunatus, Mawazo ; Yin, Fan

Rodezno, Carolina ; Moraes, Raquel ; Fortunatus, Mawazo ; Yin, Fan Less -
Corporate Creators:

Auburn University. National Center for Asphalt Technology
Corporate Contributors:

South Dakota. Department of Transportation. Office of Research ; United States. Department of Transportation. Federal Highway Administration

South Dakota. Department of Transportation. Office of Research ; United States. Department of Transportation. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Asphalt Mixtures Bituminous Binders Literature Reviews Mix Design Reclaimed Asphalt Pavements Recycled Materials Surveys
Publication/ Report Number:

SD2018-07-F
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report 02/26/19-08/25/21
Corporate Publisher:

South Dakota. Department of Transportation. Office of Research
Abstract:

This research evaluated the effectiveness of bio-based and petroleum-based rejuvenators in restoring the properties of asphalt binder blends and mixtures containing high content of reclaimed asphalt pavement (RAP). The rheological and chemical evaluation of binder blends included rotational viscosity, Superpave Performance Grading (PG), Multiple Stress Creep Recovery (MSCR), and Fourier Transform Infrared (FTIR) spectroscopy. The binder results indicated that the addition of RAP up to 50% of binder replacement to a PG 58-34 base binder resulted in increased cracking susceptibility after long-term aging, as indicated by the Glover-Rowe (G-R) parameter results. The addition of rejuvenators decreased the stiffness of the recycled asphalt binder blends and thus, improved the cracking susceptibility after long-term aging. This improvement was found as rejuvenator product dependent, and was usually influenced by the RAP content of each recycled asphalt binder blend.
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PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

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urn:sha256:32d597f1e55e18aa532612c1edd4723b30cfea751c328e27083cf6112a0fc2f5
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https://rosap.ntl.bts.gov/view/dot/72479/dot_72479_DS1.pdf
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Evaluation of Asphalt Binder Rejuvenators for Use in Recycled Asphalt

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