本研究探討不同拌合條件及養護環境下水泥砂漿試體內部的氯離子擴散與所埋設鋼筋腐蝕的關係。試驗以固定水灰比（w/c=0.6）之水泥砂漿分別製作方塊、圓柱及鋼筋圓柱試體，並使用鹽水或淡水來拌合及養護來評估氯離子在各條件下之擴散行為及其與鋼筋腐蝕間之關係。研究結果顯示，氯離子擴散同時受到環境條件與試體本身水化程度影響，擴散行為因深度不同而有所差異，故不宜以單一擴散係數來描述氯離子擴散行為。另一方面，試驗結果發現鋼筋於腐蝕初期易吸引氯離子往鏽蝕反應處移動。然而，當腐蝕嚴重時氯離子似往相反方向移動。

This study explores the relationship between the diffusion of chlorides and the corrosion of reinforcement in mortar specimens prepared with different mixing and curing conditions. Cubic and cylindrical specimens with and without reinforcements were prepared and cured in either salt or fresh water to explore the diffusion behaviors and the relationship between the chloride contents and the corrosion of the reinforcements. Results showed that the diffusion of chlorides was influenced by the mixing and curing conditions, hydration, and the corrosion of reinforcements. The diffusion behaviors varied with the depths so a constant diffusion coefficient is not appropriate to describe the overall chloride diffusion behaviors. On the other hand, results also showed that the early corrosion of the reinforcements appeared to attract the chlorides. On the contrary, the chloride ions appeared to move outward when the corrosion of the reinforcements was severe.

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