| 초록 |
In the construction industry, there is an increasing trend of studying carbon fiber as a reinforcing material to replace steel rod, rebar. Carbon fiber has been attracting attention as a next generation construction material with light weight, high corrosion resistance, and high strength compared with commercial steel rebar. However, carbon fiber has a disadvantage in that it has weaker interfacial bonding force with concrete matrix than reinforcing steel. So it is hard to reach the target high strength for the construction application. In this study, silane treatment was performed on carbon fibers, and interfacial bond strength between the fiber and concrete were evaluated as a function of silane treatment condition. Fourier-transform infrared (FT-IR) and spectroscopy and energy dispersive spectrometry (EDS) were employed to analysis the carbon fiber before and after the treatments. The interfacial bond strength of the composites was measured by a pullout test according to ASTM D7913 |
