Screening of Asphalt Extenders and Recycling Agents

Castorena, Cassie; Fried, Andrew; Preciado, Jaime; Gulzar, Saqib; Aparicio Alvis, Maria Carolina; Xue, Lei Gabriel

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Screening of Asphalt Extenders and Recycling Agents

2023-06-01
By Castorena, Cassie ; Fried, Andrew ; Preciado, Jaime

File Language:

English

Details

Creators:

Castorena, Cassie ; Fried, Andrew ; Preciado, Jaime ; Gulzar, Saqib ; Aparicio Alvis, Maria Carolina ; Xue, Lei Gabriel
Corporate Creators:

North Carolina State University. Department of Civil, Construction, and Environmental Engineering
Corporate Contributors:

North Carolina Department of Transportation. Research and Development Unit ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/NC/2020-16
Resource Type:

Tech Report
Geographical Coverage:

United States ; North Carolina
Edition:

Final Report, August 1, 2019 –Feb 28, 2023
Corporate Publisher:

North Carolina Department of Transportation. Research and Development Unit
Abstract:

The objectives of this project are to: 1) develop recommendations for extender and recycling agent product approval and dosage selection; and 2) identify appropriate aging procedure(s) to simulate long-term oxidative aging coupled with test methods and parameters to characterize the cracking resistance of asphalt binders. Three NCDOT approved surface asphalt mixtures were evaluated in this study, including a reclaimed asphalt pavement (RAP) mixture, recycled asphalt shingle (RAS) mixture, and RAP/RAS mixture. Three extenders and two recycling agents (RAs) were evaluated. The extenders were blended with PG 58-28 virgin binder whereas the RAs were blended with PG 64-22 virgin binder. Blends of recycled binder, virgin binder, and a RA or extender were prepared that achieved similar high-temperature AASHTO M 320 performance-graded properties to virgin PG 64- 22 binders in North Carolina.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/72375/dot_72375_DS1.pdf
File Type:

[PDF - 5.36 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:6431b2087e98ecaa358307ace4cfbc7d2dcbd48a3250e9349db47548ce61262e

File Language:

English

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