纖維強化複合材料加強筋應用於不同強度混凝土在高溫中之握裹力

Abstract

本研究針對纖維強化複合材料加強筋應用於不同強度混凝土內時高溫對其握裹力之影響為主題，並且研究FRP bar在各種強度之混凝土內又於不同高溫加熱下其握裹力及拉拔滑移變位之變化和相互關係。 研究結果顯示在常溫下握裹試驗試體之混凝土圓柱部份的破壞情形是脆性的，並隨著加熱溫度的上升，混凝土圓柱部份之破壞情形有逐漸趨緩的現象而漸漸變成FRP bar本身與其噴砂之交界面之破壞。至於握裹力量的部分則隨著混凝土圓柱試體的強度減低以及加熱溫度的上升而向下遞減。

The major concern of this research project is to deal with the bonding capability of the same size of fiber reinforced polymer bar in concrete at elevated temperatures. The relationship between bonding force and slip displacement at different temperatures were executed. The results show that the failure of specimens at the normal temperature is brittle. With the increase of temperature, the bonding capability decrease due to the failure of rough surface of FRP bar. The bonding capability increased with the increase of concrete strength and decreased with the increase of temperature.