Resistance of Asphalt Composites With Recycled Materials To Withstand Extreme Temperatures

Rodriguez, Rogelio; Bhasin, Amit; Hossain, Zahid; Rashid, Feroze

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Resistance of Asphalt Composites With Recycled Materials To Withstand Extreme Temperatures

2019-11-30
By Rodriguez, Rogelio ; Bhasin, Amit ; Hossain, Zahid ; ...

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English

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Creators:

Rodriguez, Rogelio ; Bhasin, Amit ; Hossain, Zahid ; Rashid, Feroze
Corporate Creators:

University of Texas at Austin ; Arkansas State University
Corporate Contributors:

Southern Plains Transportation Center ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology ; United States. Department of Transportation. University Transportation Centers (UTC) Program
Subject/TRT Terms:

Additives Asphalt Mixtures Binders Creep Durability Pavement Distress Pavement Performance Reclaimed Asphalt Pavements Recycled Materials Stiffness Temperature
Publication/ Report Number:

SPTC14.1-30-F
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report June 2015 – May 2019
Corporate Publisher:

Southern Plains Transportation Center
Abstract:

The asphalt industry has become particularly interested in the impact of recycled asphalt pavement (RAP)andadditives such as rejuvenators on the behavior and performance of the material. The goal of this study wasto evaluate the tensile strength characteristics of asphalt binders and composites in addition to their stiffnesscharacteristics. The study was conducted in three parts: (1) the evaluation of tensile strength of asphaltbinders with similar performance grades, (2) the evaluation of tensile strength of asphalt binders as a functionof the amount of recycled asphalt binder added to the virgin binder as well field evaluation of binders withRAP, and (3) the influence of recycled asphalt and rejuvenators on the stiffness and tensile strength of asphaltmortars. In addition to these three objectives, this study also developed simplified methods to prepare andevaluate the tensile strength of asphalt binders and mortars as a material characterization tool to screen orevaluate the efficacy of RAP, rejuvenators, and other additives. Results show that similarly graded bindershave a significant variability both in terms of their stiffness and strength and that rejuvenators can be usedwith RAP to achieve a balance of stiffness and strength. Finally, the proposed method using asphalt mortarscan be used without extracting RAP binder to evaluate the relative performance of asphalt composites (as ascreening tool) as a function of variables such as RAP content, RAP type, rejuvenator content, rejuvenatortype, chemical additives, and binder source.
Format:

PDF
Funding:

DTRT13-G-UTC36
Collection(s):

University Transportation Centers
Main Document Checksum:

urn:sha-512:258711e27c5abf8c326aced278f6e90543230cc98f3f66d490456685b728f7efc795aa4e7b77f61e6943744a3fe693388626d0d35426bea0974e9be8983b7381
Download URL:

https://rosap.ntl.bts.gov/view/dot/62284/dot_62284_DS1.pdf
File Type:

[PDF - 17.66 MB ]

File Language:

English

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