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FAILURE MODE IDENTIFICATIONS OF RC BEAMS EXTERNALLY STRENGTHENED WITH
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TitleFAILURE MODE IDENTIFICATIONS OF RC BEAMS EXTERNALLY STRENGTHENED WITH
AuthorO'Riordan-Adjah, Chris
Keywordsexternal RC strengthening
carbon fiber composite
failure modes
ductility
AbstractThe application of carbon reinforced-fiber polymers (CFRP) to structures is a new development that is still under intense research. However, the rehabilitation or retrofit of damage reinforced concrete members by the external bonding of CFRP is becoming increasingly popular in the construction industry. The objective of the tests presented in this thesis is to study different CFRP designs on the reinforced concrete beams and compare their failure modes. The main goal is to determine the CFRP design on the reinforced concrete beams that result in a progressive and gradual failure mode with enough warning before final failure. Different CFRP designs are investigated and compared with theoretical predictions. A retrofitting concept is also employed in this research. The retrofitting concept is the idea of strengthening cracked structures. The strengthening of the beams performed in the lab is carried out under sustained loads and on previously cracking the beams to simulate the realistic case that is usually faced in practice on the field. The RC beams are strengthened in flexure to double their flexural capacity by applying the adequate amounts of CFRP to the tension face of the beams. Due to the CFRP strengthening and increasing the strength capacity of the beams, different CFRP anchorage methods are employed to the beams for additional shear reinforcement to ensure flexural failure. The different CFRP anchorage methods will also be observed for their effectiveness during the debonding and propagation mechanism as well as evaluated for their progressive failure mode.
AdviserZhao, Lei
PublisherUniversity of Central Florida
DegreeM.S.
Degree DisciplineDepartment of Civil and Environmental Engineering
Degree GrantorEngineering and Computer Science
Degree ProgramCivil Engineering
Graduation Date2004-12-01
TypeMaster's thesis
Access LevelCampus - Allow Only UCF Community Access
Release Date2014-01-31
RepositoryUniversity Archives
Repository CollectionElectronic Theses and Dissertations
IdentifierCFE0000288
Access Linkhttp://purl.fcla.edu/fcla/etd/CFE0000288

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