In an earlier phase of Project 1364, during the process of testing reducing-scale211u001ecantilever bent specimens that were models of selected bents used in the San 211u001eAntonio Y Project, a flaw in reinforcement details was discovered in the joint 211u001eregion of several cantilever bents. The two types of bents that contained this 211u001edetailing flaw included reinforced concrete bents and bents utilizing post-211u001etensioning in the overhang. Due to inadequate anchorage of longitudinal 211u001ereinforcement in n the column of the post-tensioned bents and in the column and 211u001eoverhang of the reinforced concrete bents, tensile forces in the column and 211u001eoverhang were not able to be transferred through the joint once loads imparted by 211u001ethe superstructure reached slightly more than service level. A number of repair 211u001eschemes were developed to remediate this problem in both the reinforced and post-211u001etensioning bents. The most promising of these schemes, (namely, external vertical 211u001epost-tensioning external diagonal post-tensioning, and internal vertical post-211u001etensioning) were fabricated and installed on the damaged reduced-scale cantilever 211u001ebents, then were tested to factored loads. All tested repair schemes resisted the 211u001emaximum test load with no indications of distress. Results of the load tests are 211u001epresented, and the tested repair schemes are evaluated based on servicability, 211u001ecost, constructibility, apparent durability, and aesthetics.
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