| Summary: | 碩士 === 國立臺北科技大學 === 土木與防災研究所 === 98 === In practical, the bond material used in the FRP jacketing strengthened methods is mainly epoxy. Earlier researches indicated that the effect of confined strengthening at room temperature is indeed reliable. However, it would reduce tremendously while reaches a higher temperature. Previous studies have used geopolymer to replace epoxy as the bond material for sticking FRP onto concrete cylinders, both the effects of strengthening as well as the advantage of better heat resistance were classified. Additional studies have used a porous “geopolymer foam” as the fire resistant coating to cover the concrete cylinders jacket strengthened by FRP using geopolymer, the effect of fire-resistant insulation was considerably shown.
The present study attempted to develop a light weight material with better performance in fire resistance and insulation. Perlite powder was added into geopolymer mortar, and made use as the fire resistant coating with different thickness to cover the concrete cylinders jacket strengthened by CFRP using epoxy as the bond material. The experiment results revealed that the perlite geopolymer coating did display effect in heat resistance. The heat insulation effect for 2.5 cm thickness coating was around 100 ℃, while the 4.5 cm thickness perlite geopolymer coating was 150 ℃.
|
|---|
