Moisture Warping in Jointed Plain Concrete Pavements

It is generally believed that slab warping uplift in Jointed Plain Concrete Pavements (JPCP) is caused by drying shrinkage moisture gradients that develop within the top region of a slab cross section. Field experience has shown that excessive moisture warping uplift of joints can develop if a slab on grade is exposed simultaneously to drying at the top and moisture at the bottom surface. The results from this study show that internal self-desiccation causes a uniform reduction in humidity within a cross section for a sealed curing condition. This renders the cross section prone to moisture warping if either the top or bottom surface is exposed to water. Thus, drying at the top and wetting at the bottom create a moisture gradient that causes increased moisture warping uplift. This was verified from beam uplift tests.

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• Supplemental Notes:
  • Abstract reprinted with permission from the International Society for Concrete Pavements.
• Corporate Authors:

  International Society for Concrete Pavements

  6305 Oyster Bay Court
  Bridgeville, Pennsylvania  United States  15017
• Authors:
  • Hansen, Will
  • Wei, Ya
  • Schlangen, Erik
• Conference:
  • 9th International Conference on Concrete Pavements
  • Location: San Francisco California, United States
  • Date: 2008-8-17 to 2008-8-21
• Publication Date: 2008

Language

• English

Media Info

• Media Type: Digital/other
• Features: CD-ROM; Figures; References;
• Pagination: pp 258-266
• Monograph Title: 9th International Conference on Concrete Pavements: The Golden Gate to Tomorrow's Concrete Pavements

Subject/Index Terms

• TRT Terms: Desiccation; Moisture damage; Pavement joints; Unreinforced concrete; Uplift pressure; Warpage
• Uncontrolled Terms: Jointed plain concrete pavements
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I32: Concrete;

Filing Info

• Accession Number: 01494604
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 27 2013 9:51AM