Author(s):
M. Won, S. Ryu, P. Choi, W. Zhou, S. Saraf
Publication Date
May 2013
Abstract
The Texas Department of Transportation (TxDOT) has by far the most continuously reinforced concrete pavement (CRCP) lane miles in the nation, and sections as old as 50 years are still in service. Having served much longer than intended, some sections are showing distresses. Full-depth repair (FDR) is one method used to repair CRCP distresses in Texas. Over the years, various FDR methods have been used, and the effectiveness of each method has varied... [FDR] has the advantage of being a faster operation, minimizing the time of roadway closure. Since CRCP is normally utilized at high-traffic-volume areas, the maximum time allowed for the FDR operation in TxDOT is normally limited to about nine hours, which makes the full-depth cut method the only acceptable repair method. This repair method has been used in Texas since the middle of the 1990s, and its performance has not always been good. Some repaired sections required additional repairs within a few years. FDR of CRCP is quite expensive, in addition to causing traffic delays. There is a strong need to develop an effective FDR method that will ensure long-term good performance. Researchers evaluated field performance of FDR by visual observations and nondestructive testing with falling weight deflectometer (FWD), with the objective of identifying the causes of a poorly performing FDR.
Report Number:
0-6611-S
Link(s):
Document/Product
http://library.ctr.utexas.edu/hostedpdfs/txdot/psr/0-6611-s.pdf
Publication/Product Request
TTI reports and products are available for download at no charge. If an electronic version is not available and no instructions on how to obtain it are given, contact the TTI Library.