本研究探討影響鋼筋腐蝕量測的因子、量測值可靠度分析及提升量測值準確度之方式，亦期望結果在現地量測上能方便使用，有助於未來相關量測規範之制訂，與新建/既有建築物的生命週期評估。試驗過程中，試體靜置於3.5 %鹽水中並通電加速腐蝕，於每日利用脈衝量測法、直流極化法與交流阻抗法量測腐蝕電流密度，進而計算鋼筋腐蝕速率與腐蝕量，再據此比較重量損失法所得的腐蝕量。
研究結果顯示，水灰比為0.4、0.5、0.6時及保護層厚度為3及6 cm時，計算腐蝕量與實際重量損失約成正比關係，分別可用25、50、250或是1000倍保守且有效的評估實際鏽蝕量。此外，當試體為混凝土時，可僅用5倍估算。然而，當含水率改變5 %時，量測值降低20 %。有箍筋交疊處量測值不穩定，實際以箍筋的腐蝕較主筋嚴重。使用脈衝電流100 μA與脈衝時間10 s可適當極化鋼筋。而過電位±10 mV、間隔30 s可獲得穩定量測值。另一方面，當試體具表面貼覆時，脈衝量測法無法進行有效量測，因此實務量測應先移除批覆並考慮靠材料性質，方能適當進行量測及推估腐蝕量。

This study explores the influencing factors, reliability, and methods to increase the accuracy in reinforment corrosion measurements. The results are expected to be applicable onsite, thereby contributing to draft for a new standard and evaluate the lifecycles in existing or new buildings. During the tests, the specimens were immersed in 3.5% salt water and charged for accelerated coccorion. The corrosion currents were measured daily using galvanostatic technique, linear polarization and impendences. The corrosion rates and the amount of corrosion were then estimated and used to be compared with the weight loss. Results showed that the calculated weight loss is linearly proportional to the weight loss in mortar specimens with w/c of 0.4, 0.5, and 0.6, and cover thickness of 3 cm or 6 cm. The weight loss can be estimated by multiplying the calculated weight losses by 25, 50, 250, or 1000, respectively. In concrete specimens, such multiplying factor is only 5. In addition, the measuring values of the corrosion currents were reduced by 20% as the moisture content of the specimens were reduced by 5%. The measurements at the location where the dow bars overlapped were unstable and the dow bars had more severe corrosion than the main bars. Adequate polarization can be archieved by using impulse current of 100 μA and impulse time of 10 s, and stable measurements were obtained by using an overpotential of ±10 mV and duration of 30 s. On the other hand, the measurements were not taken in specimens with tiles ontop. Therefore, in future applications, the tiles must be removed and the cover properties must be considered prior to the corrosion measurements.

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