無機聚合樹脂粘接材料應用於包覆玻璃纖維補強混凝土之研究

A Study on Concrete Confined by GFRP with Geopolymer

黎光傑(kuang-chieh Li)

指導教授 ： 吳傳威

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2006年)

摘要

目前應用於鋼筋混凝土結構包覆補強之粘接材料多為環氧樹脂，而其不耐高溫乃眾所周知，本研究則嘗試以一種「矽鋁無機聚合物」作為粘接材料，名之為「無機聚合樹脂」。一般而言，碳纖維的補強效果有優於玻璃纖維之趨勢，但由於玻璃纖維本身主要之成份即包含矽，理論上與無機聚合樹脂可能產生更佳的鍵結效果，因此本研究特嘗試應用玻璃纖維進行包覆混凝土試體之強度及高溫性能之實驗研究，探討其與碳纖維之差異性。初步結果顯示無機聚合樹脂對於玻璃纖維包覆混凝土試體的確也可發揮補強效果。不過可能由於過強的鍵結作用，使得包覆層硬度偏高，以致試體呈現脆性破壞的現象。為改善此狀況，本實驗研究另嘗試不同之玻璃纖維材料，同時並提出善用其特有鍵結性能之建議。

關鍵字

無機聚合樹脂 ； 玻璃纖維 ； 包覆補強 ； 高溫性能

並列摘要

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.

並列關鍵字

geopolymer ； GFRP ； effectiveness of confinement ； heat resistance

參考文獻

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