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爐石對混凝土耐久性影響之探討

Study of the Effect of Slag on Concrete Durability

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摘要


本研究主要採用加速氯離子傳輸試驗,探討氯離子在混凝土中的傳輸行為;進而瞭解添加不同爐石粉取代部分水泥對混凝土耐久性的影響。以10%、20%、30%、40%之爐石粉取代水泥量及0.35、0.45、0.55的水膠比為混凝土配比變數進行試驗。結果顯示在低水膠比的混凝土中,爐石粉取代水泥對其抵抗氯離子能力並不能很有效的提升,但在水膠比高的混凝土,爐石粉能有效的降低氯離子的滲透。

並列摘要


The chloride migration test was used to study the transport phenomenon of chloride ion in concrete. Concrete specimens with different replacements of cement by slag (0%, 10%, 20%, 30%, 40%), and water-binder ratio (0.35, 0.45, 0.5) were cast and tested. Test results indicate that slag can reduce the chloride permeability of concrete when high water-binder ratios (0.45, 0.55). But they are no difference when concrete with low water-binder ratio (0.35).

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