Evaluation of Premature PCCP Longitudinal Cracking in Colorado

Details

• Creators:
  Ardani, Ahmad ; Hussain, Shamshad ; LaForce, Robert
• Corporate Creators:
  Colorado. Department of Transportation
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Longitudinal cracking
  • Vibration devices
  • Slabs
  • Evaluation
  • Portland cement concrete
  • Pavement design
  • Laboratory tests
  • saw-depth
  • 14-foot slabs
• Publication/ Report Number:
  CDOT-DTD-R-2003-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Colorado
• Edition:
  Final Report
• Corporate Publisher:
  Colorado. Department of Transportation
• Abstract:
  This report presents an evaluation of several portland cement concrete pavements with premature longitudinal cracking. All of the locations discussed are in Region 1 of the Colorado Department of Transportation (CDOT). Included in this report is an overview of the causes of the premature longitudinal cracking, a description of field and laboratory investigations, and a list of strategies to eliminate such occurrences. Although there were some isolated cases of differential settlements related to the high swell potential (high PI/lower R value)of the subgrade soil and/or poor subgrade compaction, this study found the shallow depth of the longitudinal saw-cuts at the shoulder joint to be the main reason for longitudinal cracking. Malfunctioning paver vibrators and unsuitable soils also contributed to the problem. The tests also proved that the wider slab design (14-foot slab) was not a contributing factor.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93375/dot_93375_DS1.pdf
• File Type:
  [PDF - 1.84 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:69a2a63e93da2403d7d6e8441926988ff45ad3cd0dd02e51d0b6a2a8a2db85df7d270bd776f8f5ffda63a48f93bff4b7acb7dc5f4d63f0941dee7316386169f4