鋼筋混凝土樑構件腐蝕後力學行為之研究

A Study on the Mechanical Behavior of Corroded Concrete Beam

本研究針對不同的混凝土梁試體，探討其腐蝕後之力學行為。試驗變數包括水灰比及開裂程度。研究結果顯示有裂縫存在或水灰比較高之梁試體，由於混凝土水密性較差，容易造成外界氯離子侵入，使得鋼筋發生腐蝕之機率較高；且當混凝土梁腐蝕後，梁之極限荷重有下降之趨勢。

In this paper, reinforced concrete beams with different water/cement ratios and defects were used to study corrosion of the effect on the beam behavior. Test results show that concrete beams with crack or concrete with a higher water/cement ratio have larger possiblity of steel corrosion because of chloride ions penetration. The results also show that the rebar corrosion may significantly reduce the loading capacity of RC beams.