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<p>Due to harsh environmental conditions, the deterioration of
prestressed concrete bridge girders is a commonly observed phenomenon in
Indiana and much of the Midwest. Concordantly, one widely observed damage
scenario is deteriorated end regions of prestressed concrete girders. Damaged
or failed expansion joints expose prestressed concrete girder end regions to
chloride-laden water, resulting in a corrosive environment in which
reinforcement section loss and concrete spalling can occur. For bridges
experiencing this type of deterioration, action is needed to ensure the
structure remains safe and serviceable. As
such, an experimental program was developed to investigate the effectiveness of
three repair techniques in restoring the structural behavior of prestressed
concrete bridge girders with end region deterioration. The three examined
repair techniques are (i) an externally bonded fiber reinforced polymer (FRP)
system, (ii) a near-surface-mounted (NSM) FRP system, and (iii) a concrete
supplemental diaphragm. Additionally, installation procedures for the three end
region repair techniques were developed. Results, conclusions, and
recommendations from the experimental program are presented to help advise best
practices for implementing end region repair techniques in the field. </p>
</div>
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| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/14499315 |
| Date | 06 May 2021 |
| Creators | William Rich (10713612) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/thesis/EXPERIMENTAL_INVESTIGATION_OF_REPAIR_TECHNIQUES_FOR_DETERIORATED_END_REGIONS_OF_PRESTRESSED_CONCRETE_BRIDGE_GIRDERS/14499315 |
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