Abstract
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.
Report Date
3-2005
Report Number
KTC-05-01/SPR 270-03-1I
Digital Object Identifier
http://dx.doi.org/10.13023/KTC.RR.2005.01
Repository Citation
Beckham, Tony L. and Hopkins, Tommy C., "Swelling Pavement: KY 499 Estill County" (2005). Kentucky Transportation Center Research Report. 150.
https://uknowledge.uky.edu/ktc_researchreports/150
Notes
The contents of this report reflect the views of the authors, who are responsible for the facts and accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the University of Kentucky, the Kentucky Transportation Cabinet, nor the Federal Highway Administration. This report does not constitute a standard, specification, or regulation.