Thickness Design for Cement-Treated Base Pavements

Details

• Creators:
  Thompson, Marshall
• Corporate Creators:
  Illinois Center for Transportation ; University of Illinois at Urbana-Champaign. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Illinois Department of Transportation. Bureau of Research ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Base Course (Pavements) Falling Weight Deflectometers Full-depth Reclamation Pavement Design Pavement Performance Thickness
• Publication/ Report Number:
  FHWA-ICT-24-013
• DOI:
  https://doi.org/10.36501/0197-9191/24-015
• Resource Type:
  Tech Report
• Geographical Coverage:
  Illinois ; United States
• Edition:
  Final Report 7/1/21–6/30/24
• Corporate Publisher:
  Illinois Center for Transportation
• Abstract:
  This project developed a cement-treated base (CTB) thickness design procedure for the Illinois Department of Transportation based on CTB fatigue (stress ratio criterion). The researcher developed a comprehensive ILLI-PAVE database for a range of thickness design inputs (7-day compressive strength, CTB thickness, and subgrade modulus). A CTB flexural stress algorithm was derived from the comprehensive ILLI-PAVE database. Minimum CTB thicknesses for IDOT Class III and Class IV pavements were established, and the results were presented in tabular form. Falling weight deflectometer testing and project site reviews of several existing typical CTB projects indicated CTB compressive strengths are significant (average of 750 psi), and the projects are performing well. As expected, transverse shrinkage cracks have occurred in the projects.
• Format:
  PDF
• Funding:
  R27-235
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:0feaa929dbb8b40c7597c0d5059441901daab063d84e7e0e1fb7b7f201ea0903
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/75065/dot_75065_DS1.pdf
• File Type:
  [PDF - 542.04 KB ]