高雄地區混凝土構造物腐蝕調查及防蝕策略之探討

The Study of Concrete Construction Corrosion Investigation and Anti-corrosion Application in Kaohsiung Area

高雄地區因受臨海地理環境之影響，港口與都市關係密不可分，海岸工程在本地之經濟建設是不可或缺的一環，但由於面臨海水侵蝕的環境影響，結構物混凝土常在未達五十年之設計年限，即發生結構劣化、功能不足導致須拆除或停用的結果。本文以高雄地區捷運工程之混凝土構造物為例，詮釋如何能利用高性能混凝土，引入其「適當漿量，且漿量愈少耐久性愈佳」之配比理念，並於混凝土中添加卜作嵐材料，降低混凝土中所含的水及水泥，進而增進結構物整體之耐久性。對於海岸工程建設量日益龐大之高雄地區而言，如將高性能混凝土應用於混凝土防蝕工程之設計及修補維護，對於減緩海岸地區結構物之侵蝕將具莫大之意義，就結構物整體營運效益而言，不啻為最經濟的選擇。

The relationship between harbors and cities cannot be split in Kaohsiung area, because of the effect of geographical environment adjoining ocean. Coastal engineering is an indispensable part for the economic development in Taiwan. The structure concrete which is less than fifty years has structure deterioration and insufficient function to result in being dismantled or stopped to use due to the effect of corrosion environment adjoining ocean. This article will take concrete construction of Kaohsiung rapid transit engineering as an example. It annotates how to use high performance concrete introducing its mixture proportioning method, which is being suitable paste amount, and the less paste amount is, the more durability is. Adding on pozzlanic materials reduces the amount of water and cement in concrete and then enhances the integral durability of construction. To Kaohsiung area for increasing construction quantity of coastal engineering, if we could apply high performance concrete to the anti-corrosion design and repairing maintenance of concrete, it has great significance to slow down the corrosion of the construction in coastal area. It is also the most economical choice to entire operation effect of constructions.