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South Dakota Department of Transportation
Project Synopsis

Title: Evaluation of Geosynthetics in Asphalt Overlays of Jointed Concrete Pavements
Project Researcher: Hal Rumpca, SDDOT
Project Manager: Hal Rumpca
Research Period: 7/15/1995 - 10/31/1999
Cost: $20,000.00

Problem Statement: In South Dakota many long jointed concrete pavements are nearing the end of their design life. With the limited funds available to the Department, extending the service life of these pavements is imperative. The Department needs to determine how best to handle these pavements. Various options are available. Some of the options include complete reconstruction, asphalt overlay and concrete rehabilitation.

The use of asphalt overlays is less costly than the other alternatives but deterioration of the asphalt at the concrete joint has been a problem. Study is needed to determine the effectiveness of geosynthetics to lessen the deterioration experienced from reflective cracks at the existing concrete joints. The supplier for two types of geosynthetics is willing to provide material to conduct this study. The two types of geosynthetic are Perma GlasPave, manufactured by Bayex, Inc., and Linq Tac, manufactured by Industrial Fabrics, Inc.


Research Objectives:
1  To evaluate Linq Tac 711N and Strata Grid 200's ability to alleviate distress in the asphalt over Portland Cement Concrete (PCC) joints.

Research Tasks:
1  Meet with the project's technical panel to review project scope and work plan.
2  Locate test sections with assistance from the Yankton Area Office. Each test segment will be 10 joints long. Each segment shall include a separate material; either maximum or minimum rehabilitation; and either sawed or unsawed asphalt joint treatme
3  Photograph and video of the condition of the concrete joints. Assistance from Bierschbach Equipment and Supply has been offered.
4  Evaluate the performance of the joints. Information that can be used to evaluate the performance should include road profiles, visual distress surveys and falling weight deflections. The timing of collecting information should identify when crackin
5  Evaluate the data for the test sections on the SPS-6 project on US212 near Groton that used STRATAGRID as a reinforcing layer between the concrete and asphalt.
6  Provide an interim report with recommendations after material has been installed for one year. The interim report should be provided to the Technical Panel by October 1, 1996, so that recommendations can be incorporated into plans for the 1997 const
7  Prepare a final report and executive summary of the literature review, research methodology, findings, conclusions, and recommendations.
8  Make an executive presentation to the SDDOT Research Review Board at conclusion of the project.

Documents Available:

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