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Implementing Full Depth Reclamation (FDR) to Repair Roads Damaged in the Energy Sector

Project Summary

In research project 0-6271 the Full Depth Reclamation (FDR) process was extensively studied. In this process the existing roadway is chemically stabilized (with cement, lime, fly ash, asphalt, etc.) to create either a solid base or roadway foundation. All aspects of the FDR process including pavement testing, laboratory design, pavement design, specifications, construction and performance monitoring were documented. The lessons learned were incorporated into a training program which was taught in both the Bryan and Dallas Districts. During 0-6271 several case studies were constructed and numerous projects were monitored around Texas. FDR also is cost effective as it makes use of in-place material, eliminating long haul distances for new materials. When performed correctly the FDR process creates cost effective roadways that can readily handle heavy truck traffic. TxDOT now faces major pavement rehabilitation and funding problems with the roadways all over Texas which have been severely damaged by energy development activities. These are often low volume roadways which were never designed to carry these large numbers of very heavy trucks. Consequently, many districts including Corpus Christi, Laredo, San Antonio, San Angelo, Odessa and several others have hundreds of miles of totally destroyed roadways. Adding to this problem is that many of these roadways are often in remote areas where there is not access to quality paving materials. The FDR process as described in 0-6271 offers great potential to stabilize roadways in-place making use of existing materials and determining the optimal stabilizing agent to make these roadways structurally adequate

The purpose of this implementation project is to implement the finding of project 0-6271. It will provide Districts with clear guidelines on how to take existing roadways thru the FDR process to make long lasting structurally adequate roadways able to carry overloaded vehicles. A minimum of 5 test sections will be built in different Districts around Texas. Workshops will be developed and taught in a minimum of 4 Districts. The results will also be available for presentation at TxDOT Annual Construction and Maintenance Conference.

Project Number

5-6271-05

Status

Completed

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Project Details

Start Date

9/1/2014

End Date

8/31/2017

Performing Institution(s)

Texas A & M Transportation Institute (TTI)

Research Team

RS: Tom Scullion

Sponsor

Project Manager

Joe Adams

Amount Funded

FY15: $332,000
FY16: $350,000
FY17: $240,000

Publications from this Project

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Functional Area

Construction and Maintenance

Index Terms

Full-depth reclamation
Pavement design
Pavement performance
Rehabilitation (Maintenance)
Specifications
Structural health monitoring
Pavements
Foamed asphalt

Lead University

TTI

Researcher

Scullion, Thomas

Geographic name

Bryan, Tex.
San Antonio, Tex.
Laredo, Tex.
Corpus Christi, Tex.
Odessa, Tex.

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Comments

kevyn

See the October 2018 video by TxDOT "West Texas Energy Transportation Challenges" for a summary of some of the challenges that led to this and related research projects: https://youtu.be/_8vSa4ocsis

11/29/2018 at 10:41 AM

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Record Added:

6/24/2015

Record Updated:

10/30/2023 11:50 AM EDT

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