外加電流式之陰極防蝕於碼頭R.C.面版防蝕之應用

Impressed Current Cathodic Protection Applied in Deteriorated Wharf Reinforced Concrete Decks

陳桂清(Kuei-Ching Chen) ； 柯正龍(Jeng-Long Ko) ； 張道光(Tao-Kuang Chang)

《防蝕工程》 20卷3期 (2006/09) Pp. 241-248

https://doi.org/10.6376/JCCE.200609.0241

摘要

港灣棧橋式碼頭之R.C.面（底）版，長年遭受海水波浪之衝擊浸漬，海水中之氯離子甚易侵入底版，造成內部鋼筋之銹蝕、混凝土保護層剝落、鋼筋裸露斷裂，終致底版破裂、塌陷，嚴重危害碼頭結構物之安全。陰極防蝕技術公認為對鋼（鐵）材料最具防蝕效果，可有效防止海洋環境下R.C.結構物之腐蝕劣化問題。近年來，國內濱海地區陸上公路橋樑、建物等多項新建或舊有工程，已採用陰極防蝕工法進行防蝕保護。但是，應用於港灣R.C.結構物之防蝕案例，甚為鮮少。本文特以高雄、蘇澳港各擇一碼頭R.C.底版，進行現地小面積之陰極防蝕試驗，評估其防蝕之可行性與效應。

關鍵字

陰極防蝕 ； R.C.結構物 ； 腐蝕

並列摘要

Reinforced concrete decks of Trestle type wharf are confronted and soaked by waves surfing impaction. Chloride ion in seawater can easily intrude into decks, resulted in rebar corrosion, concrete covers spolled, rebar exposuredly broken, and finally harm the port facility seriously. Cathodic protection technique is acknowledged as the best effective method to prevent the reinforced concrete from corrosion deterioration under marine environment. Recently, several public transportation facilities are applied Impressed Current Cathodic Protection (ICCP) at near seashore concrete structures. Nevertheless, there are few cases using ICCP at port facilities. Therefore, in the paper, two-selected small deck areas at Kaoshuing and Su-Ao port were under experimented and evaluated.

並列關鍵字

Cathodic protection ； Reinforced concrete structure ； Corrosion