Heaves at Transverse Cracks in Asphalt Concrete Pavement

Details

• Creators:
  Preber, Terje ; Peters, Darla J
• Corporate Creators:
  South Dakota School of Mines and Technology
• Corporate Contributors:
  South Dakota. Department of Transportation
• Subject/TRT Terms:
  Asphalt Concrete Asphalt Pavements Core Samples Field Studies Frost Heaving Grinding Moisture Content Monitoring Overlays (Pavements) Reconstruction Reflection Cracking Samples Soil Tests Subgrade (Pavements) Swelling Soils Transverse Cracking

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• Publication/ Report Number:
  SD92-11-F
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Corporate Publisher:
  South Dakota. Department of Transportation
• Abstract:
  This report presents the results of the investigation for the cause of heaves at transverse cracks on US Highway 212 between LaPlant and the Missouri River. The investigation included a one-year field monitoring of surface movements at and near transverse cracks at the above project and at five control projects. During this period, soil and asphalt samples were taken and tested. The soil samples were tested for moisture content to determine any variation with time, and for swell potential. The asphalt cores were tested for AC content. A test pit to a depth of approximately six feet was dug at the location of a transverse crack, and soil samples were taken throughout the pit. The results of the study indicate that the cause of the heaves is swelling of the subgrade soil from water infiltration through the transverse cracks. This is evidenced by the moisture content distribution around the cracks, which show a decreasing moisture content of both the base and the subgrade material with increasing vertical and horizontal distance from the crack. The problem also appears to have been aggravated by over-compaction and placement of the subgrade at too low moisture contents. Frost also appears to contribute to seasonal heaves. Based on the results of the study, recommendations are given for remediation and reconstruction. Remediation procedures range from placement of an impermeable asphalt rubber membrane which will minimize reflective cracking and water infiltration through transverse cracks to grinding and overlays. For rebuilding and new construction on other projects, criteria for placement moisture and compaction are proposed. The use of an impermeable membrane between the subgrade and the base material is also suggested.
• Format:
  PDF
• Funding:
  310111
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:ecd9c5ce5d25f8da9369536325b7f73ed6fdfbc3bccd9184c7018d32a72d0ad14cdf2f1310c208b22e97fd7e6d4f59eab8cd103cf476a392316ff1055b650541
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/80074/dot_80074_DS1.pdf
• File Type:
  [PDF - 25.86 MB ]