本研究探討卜特蘭水泥主要成分相及卜作嵐材料的氯離子吸附行為。首先合成水泥的主要成分相，包含C3S、C2S、C3A、C4AF以及水泥的水化產物鈣礬石，接著量測其與卜作嵐材料浸泡氯化鈉溶液時的氯離子濃度改變，最後計算其吸附之氯離子總量。研究結果發現，氯離子的吸附行為與水泥主要成分之水化速度有相關，水化速度較快者，於前期之氯離子吸附情形較為明顯，表示水化可有效吸附氯離子。增加氯化鈉溶液之濃度，可有效提高其吸附之速率，但於單位重量下，化合物之吸附氯離子總量維持不變，表示提高氯化鈉溶液濃度，只能提升氯離子吸附速率，不能增加其氯離子吸附量。卜作嵐材料如飛灰、爐石等的吸附氯離子總量相當低，說明添加卜作嵐材料於水泥時，氯離子的吸附行為仍由卜特蘭水泥所主導。

This study explored the adsorption of the chloride ion on the major phases of the Portland cement and the pozzolanic materials. During the study, the major phases of the Portland cement, such as C3S、C2S、C3A、C4AF, and the hydrated phase of ettringite were prepared and immersed in the NaCl solution. Both the changes in the chloride ion concentration and the weight of the specimens were measured so the amount of the adsorption was calculated. Results showed that the adsorption was related to the rate of hydration. The phases that hydrate fast had high adsorption, suggesting that the hydration of the phases effectively induced adsorption. It was also shown that the rate of adsorption was effectively increased by increasing the concentration of the NaCl solution. However, the total adsorption per unit weight remained unchanged, suggesting that only the rate of adsorption rather than the total adsorption was increased by the increased NaCl concentration in the solution. Finally, it was found that the pozzolanic materials had low adsorption. In the presence of the pozzolanic materials, the adsorption of the chloride was supposed to be governed by the Portland cement.

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