| Summary: | 碩士 === 國立臺北科技大學 === 土木與防災研究所 === 94 === Presently, the bonding material used for jacket strengthening RC structures is mainly by epoxy. It is well known that epoxy is poor in heat resistance. In the present research, a new bonding material, namely geopolymer is adopted to replace epoxy. Generally speaking, CFRP seems to perform better than GFRP for strengthening structures purpose. Nevertheless, since the major component of GFRP is silicon, it may theoretically has better chain reaction with geopolymer. The present research thus proceeded to investigate the strength as well as heat resistance of concrete cylinders covered by GFRP using geopolymer. A preliminary result indicated that the effectiveness of confinement is confirmed. However, the chain reaction between geopolymer and GFRP may be too strong, such that the cover layer rendered extremely hard, and caused a brittle failure type. To overcome such situation, various types of GFRP were used. In addition, suggestions are offered to make better use of such property.
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