chapter 3 rigid pavement - DOT On-Line Publications - Department ...

Based on Kansas Standard Plan 707.2, it appears there was approximately
0.07 percent reinforcing steel in the Kansas I-70 pavement. Ye recotmnend
that the State consider increasing the amount of reinforcing steel cm future
projects.
Correction of working cracks is a very costly process. The available
alternatives include installation of retrofit dowels and full-depth patching.
If the retrofit dowel technique is used, the work should be performed before
the cracks start to deteriorate. A minimum of three dowels is required in
each wheelpath.
The cost per dowel should be in the range of $30 to $70,
depending on the quantities, labor costs, and hardness of the aggregate. When
the full-depth repair option is selected, work should be performed after the
distress begins to have a serious impact on pavement serviceability. The use
of full-depth patching after the distress has occurred is generally the
preferred alternative for several reasons: (1) It is difficult to predict
whether the working cracks will result in a significant reduction in pavement
serviceability. (2) If the rate of serviceability loss is low, the full-depth
patching can be performed at the same time future rehabilitation needs are
addressed.
Attached is a copy of the latest draft of the report for the research project
"Performance/Rehabilitation of Rigid Pavements.n Also attached is information
on retrofit dowel bar installation.
Please contact Mr. John Hallin at 366-1323, if you have any questions
concerning these comments.
3.4.2