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Title |
An Experiment of Flexural Behavior for the Damaged Low Reinforced Concrete Beams Rehabilitated with External Tendons
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Keywords |
초기 손상 ; 보강 효과 ; 외부 강선 ; 보강공법 Initial damage ; Reinforcing effect ; External tendon ; Rehabilitating method |
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Abstract |
Most experiments carried out in the previous studies dealt with the highly reinforced concrete beams (RC beams) in case of rehabilitating with external tendon. However, the reinforcing effect of external tendons cannot be clearly analyzed in this kind of RC beams because the rehabilitating tendon quantity for it is too small. By this reason, this study chose the low RC beams rehabilitated with external tendons. Therefore, in this study, 7 test beams were manufactured and flexural behavior tests were performed to assess the reinforcing effect and to find more proper rehabilitating method by external tendon. The reinforcing effect increased according to the quantity of tendons, and was especially added by repairing cracks with epoxy resin. It was shown that the design equations of AASHTO 1994 and ACI-318 did not show a good agreement with test results. The result of this study will be able to be used effectively in finding the more proper rehabilitating method of the damaged RC beams.
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