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Implementation of RAS Best Practices and Piloting Rejuvenators in Key Districts

road paving operation with recycled asphalt

What Was the Need?

Recycled materials including reclaimed asphalt pavements (RAP) and recycled asphalt shingles (RAS) have been widely used in asphalt mixes in Texas with at least three benefits: reducing construction cost, conserving raw materials and environment, and improving rutting resistance. However, there are two major concerns over the use of RAP and RAS: variability and premature cracking. This project addressed these two concerns.

What's the Solution?

This project developed and disseminated the best practices of processing RAP and RAS through teaching four regional workshops. Additionally, researchers evaluated many bio-rejuvenators to improve cracking resistance through a series of laboratory testing and the construction of 17 field test sections.

Project Number

5-6614-01

Status

Completed

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Project Details

Start Date

9/1/2014

Renewal date

9/1/2017

End Date

8/31/2019

Performing Institution(s)

Texas A & M Transportation Institute (TTI)

Research Team

RS: Fujie Zhou

Sponsor

Project Manager

Joanne Steele

Contract Specialist

Patti Dathe

Amount Funded

FY15: $70,000
FY16: $90,000
FY17: $60,000
FY18: $75,000
FY19: $74,000

Publications from this Project

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Functional Area

Construction and Maintenance

Index Terms

Recycled materials
Shingles
Technology transfer

Lead University

TTI

Researcher

Zhou, Fujie

Geographic name

Austin, Tex.
Fort Worth, Tex.
Dallas, Tex.
Tyler, Tex.
Childress, Tex.
Amarillo, Tex.

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Record Added:

6/24/2015

Record Updated:

1/25/2022 5:36 AM EST

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