Swelling Pavement: KY 499 Estill County

A field and laboratory investigation was performed to determine why excessive swelling was occurring on a pavement section of KY Route 499 that was about four years old. Swelling occurred on a section of roadway that had been constructed with a hydrated lime-stabilized subgrade. As shown by laboratory swell tests, swelling of the pavement was due to the absorption of water and expansion of the compacted clay shale subgrade. Results of laboratory swell tests showed that the hydrated lime stabilization of the shale actually reduced swelling. Chemical reactions between calcium, present in the hydrated lime, and sulfates, which were present in small amounts did not contribute to swell.

  • Record URL:
  • Supplemental Notes:
    • Study Title: Characteristics and Engineering Properties of the Soft Soil Layer at the Top of Highway Subgrades.
  • Corporate Authors:

    University of Kentucky, Lexington

    Kentucky Transportation Center
    College of Engineering, 176 Raymond Building
    Lexington, KY  United States  40506-0281

    Kentucky Transportation Cabinet

    200 Mero Street
    Frankfort, KY  United States  40622

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Beckham, Tony L
    • Hopkins, Tommy C
  • Publication Date: 2005-3


  • English

Media Info

  • Media Type: Print
  • Edition: Interim Report
  • Pagination: 14p

Subject/Index Terms

Filing Info

  • Accession Number: 01001274
  • Record Type: Publication
  • Source Agency: University of Kentucky, Lexington
  • Report/Paper Numbers: KTC-05-01SPR270-03-1I, KTC-05-01/SPR-03270-1I
  • Contract Numbers: KYSPR-03-270
  • Created Date: Jun 20 2005 12:02PM