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

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. The Texas Department of Transportation (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. In recent months, researchers from Texas Transportation Institute (TTI) have assisted several Districts in designing FDR projects in the energy sector. Current efforts are aimed at helping the Corpus Christi District with designing a foamed asphalt section on FM 99. This section will be constructed in June of 2014 and efforts will be made to determine its ability to be opened to traffic no more than 2 hours after compaction. Studies have also recently been conducted in San Antonio and Laredo. The purpose of the implementation project described below 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 the TxDOT Annual Construction and Maintenance Conferences.

Language

  • English

Project

  • Status: Completed
  • Funding: $922000
  • Contract Numbers:

    5-6271-05

  • Sponsor Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483
  • Project Managers:

    Adams, Joe

  • Performing Organizations:

    Texas Transportation Institute

    Texas A&M University System
    3135 TAMU
    College Station, TX  United States  77843-3135
  • Principal Investigators:

    Scullion, Tom

  • Start Date: 20140901
  • Expected Completion Date: 0
  • Actual Completion Date: 20170831
  • Source Data: RiP Project 39992

Subject/Index Terms

Filing Info

  • Accession Number: 01569074
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 5-6271-05
  • Files: RiP, STATEDOT
  • Created Date: Jul 1 2015 2:45AM