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South Dakota Department of Transportation
Project Synopsis
SD1992-11


Title: Heaves at Transverse Cracks in AC Pavement
Project Researcher: Terje Preber,
Project Manager: Daris Ormesher
Research Period: -
Status:
Cost: $0.00

Problem Statement:Heaving is appearing at transverse cracks within three years on newly graded projects surfaced with asphalt concrete. These projects are generally in highly expansive soils in West River South Dakota. Heaving of the magnitude noted on these projects has not been observed before. Contributing factors may include: transverse cracks, moisture, environment, soil types, materials, construction procedures, design concepts, traffic loads, crack sealing, etc.

The section of pavement that has exhibited the most heaving is U.S. Highway 212 from the Missouri River to LaPlant, which was paved in 1988. This project has developed heaves in excess of 1", spanning 3 ft to 10 ft on each side of transverse cracks. Emergency maintenance has been performed on this section by milling off the tops of the heaves to improve ridability. Two similar projects were completed in 1989 and 1990 directly west of this project. These projects have not developed heaves at this time.

The heaves are unacceptable to the traveling public. Methods or procedures must be developed to correct and/or prevent this problem.

Findings:

Research Objectives:

Research Tasks:
1  Meet with the Technical Panel to review the work plan and scheduling.
2  Review and summarize literature relevant to heaves at transverse cracks in asphalt concrete. This will include contacting other states and agencies who may have experienced similar problems.
3  Perform periodic field measurements for a minimum of 12 months to monitor heave development and crack growth on the projects to determine the extent of the problem.
4  Evaluate design, materials, soil types, construction methods and maintenance practices on the above referenced projects.
5  Recommend changes to design, construction and maintenance standards, specifications or methods.
6  Submit a final report summarizing relevant literature, research methodology, data, findings, and conclusions.
7  Present findings and conclusions to SDDOT Research Review Board at the conclusion of project.

Documents Available:

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