TENSILE STRENGTH AND MECHANICAL TENSILE STRENGTH AND MECHANICAL PROPERTIES OF FIBER REINFORCED PLASTIC PROPERTIES OF FIBER REINFORCED PLASTIC REINFORCING BARS REINFORCING BARS David Imam David Imam and and Allison Johnson-Moore Allison Johnson-Moore Undergraduate Civil Engineering Research Undergraduate Civil Engineering Research University of Southern California University of Southern California
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TENSILE STRENGTH AND MECHANICAL TENSILE STRENGTH AND MECHANICAL PROPERTIES OF FIBER REINFORCED PLASTIC PROPERTIES OF FIBER REINFORCED PLASTIC REINFORCING BARSREINFORCING BARS
David Imam David Imam andand Allison Johnson-Moore Allison Johnson-MooreUndergraduate Civil Engineering ResearchUndergraduate Civil Engineering Research
University of Southern CaliforniaUniversity of Southern California
Impervious to chloride ion and Impervious to chloride ion and chemical attackchemical attack
Tensile strength greater than steelTensile strength greater than steel 1/4th weight of steel reinforcement1/4th weight of steel reinforcement Transparent to magnetic fields and Transparent to magnetic fields and
radio frequenciesradio frequencies Electrically non-conductiveElectrically non-conductive Thermally non-conductiveThermally non-conductive
Low Modulus of Elasticity Low Modulus of Elasticity Brittle natureBrittle nature
ObjectiveObjective This exploratory study was carried This exploratory study was carried
out to for two purposes: out to for two purposes: to develop a suitable method for to develop a suitable method for
producing uniform stress throughout producing uniform stress throughout the member during testing the member during testing
to investigate the tensile strength of to investigate the tensile strength of Fiber Reinforced Plastic (FRP) Fiber Reinforced Plastic (FRP) reinforcing bars reinforcing bars
Experimental OptionsExperimental Options Analyze a plain FRP specimenAnalyze a plain FRP specimen Wrap the ends of the sample in Wrap the ends of the sample in
epoxy-coated carbon fiber clothepoxy-coated carbon fiber cloth Encase the ends of the sample Encase the ends of the sample
with metal sleeveswith metal sleeves
Experimental ProgramExperimental ProgramSetup:Setup: Cut specimen to Cut specimen to
BAR D: small diameter naked ends (results unattainable)
ConclusionConclusion Developed method relatively Developed method relatively
successfulsuccessful Modulus of Elasticity much less than Modulus of Elasticity much less than
steelsteel Failure stress much greater than Failure stress much greater than
steelsteel
Sources of ErrorSources of Error Failure of epoxy to perform to full Failure of epoxy to perform to full
potentialpotential Specimen not completely verticalSpecimen not completely vertical SlippageSlippage
ConclusionConclusionImprovements for Testing/Producing Improvements for Testing/Producing
FRPFRP Use a more ductile polymerUse a more ductile polymer Allow Epoxy to fully setAllow Epoxy to fully set Custom design metal sleevesCustom design metal sleeves Experiment with a variety of Experiment with a variety of