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South Dakota Department of Transportation
Project Synopsis
SD1992-01


Title: Effectiveness of PCC Undersealing
Project Researcher: Ramzi Taha,
Project Manager: Blair Lunde
Research Period: -
Status: Approved
Cost: $0.00

Problem Statement:Pumping and faulting of undoweled PCC pavement has become a serious problem in South Dakota. When a pavement becomes faulted the rideability of the pavement becomes objectionable to the travelling public. One of the rehabilitation measures used to reduce the progression of faulting has been undersealing.

There is considerable disagreement within SDDOT as to the effectiveness of undersealing. It is essential to determine the applicability, effectiveness, durability and proper guidelines for undersealing. It is also important to determine the cost effectiveness of undersealing so that a comparison to other rehabilitation strategies can be made.

Findings:

Research Objectives:
1  To describe the deterioration of load transfer and the development of faulting on undoweled plain jointed concrete.
2  To determine the effectiveness of undersealing undoweled plain jointed PCC pavements.
3  If undersealing is effective determine when and where it is appropriate for use.
4  Develop design, construction and inspection guidelines to obtain optimal benefit when undersealing is selected as a necessary rehabilitation method to include an effective way to estimate quantities of undersealing.

Research Tasks:
1  Meet with the Technical Panel to discuss the research topic.
2  Review and summarize applicable research relevant to this study.
3  Determine the deterioration of load transfer and the development of faulting with age using the progression of projects on I29 north of Watertown.
4  Evaluate projects that have been undersealed in South Dakota with field inspection and remove representative panels to observe the results of undersealing.
5  Evaluate the cost effectiveness of undersealing by examining the maintenance and construction costs.
6  Evaluate the performance of undersealing.
7  Interview undersealing contractors about practices and procedures used.
8  Meet with the field engineers that have worked on undersealing projects to allow for the exchange of information on problems during construction and ideas to improve the overall project.
9  Evaluate road profiler, profilograph, dynaflect and FWD data for undersealed and non-undersealed sections.
10  Submit an interim report to provide preliminary information to assist in setting rehabilitation strategies for Calendar Year 1993 rehabilitation projects by Sept. 1, 1992.
11  Submit a final report summarizing relevant literature, research methodology, findings and conclusions.

Documents Available:

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