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Title |
Investigation of Maximum Strength and Effective Bonding Length at the Interface Between Structure and GFRP Material Under Freeze-thaw Cycles and Applied Different Bonding Materials
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Keywords |
FRP 경계면 ; 동결융해 ; 유효부착길이 ; 부착강도 Interface between FRP-concrete ; Freezing and thawing ; Effective bonding length ; Bond strength |
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Abstract |
This research studies the behavior of the FRP-concrete interface subjected to two environmental substances. Frist is to investigate the behavior by the application of different bonding materials at the interface between FRP and concrete, second is to understand a long-term performance at the interface by Freeze-thaw actions. The parameters considered in this research are the maximum bonding strength and the effective bonding length at the FRP-concrete interface. In the first experimental phase, three types of specimens are fabricated and tested considering the number of applied bonding materials and the Freeze-thaw tests are performed to evaluate the behavior of the interface in the cycle range of 0 to 300 cycles. Finally, it is known that there is a 5~7% difference of the effective bonding length between applied bonding materials and the values for the maximum stress and the effective length under Freeze-thaw action are varied randomly as the freeze-thaw cycle is increased even though initial reduction of their capacities are occurred.
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