کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7884769 | 1509716 | 2018 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chloride-binding capacity of hydrotalcite in cement pastes containing dolomite and metakaolin
ترجمه فارسی عنوان
ظرفیت اتصال هیدروالکتیت کلراید در پاستای سیمان حاوی دولومیت و متاکائولین است
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
In this study, we investigated well-hydrated cement pastes containing dolomite and metakaolin cured at 38â¯Â°C or 60â¯Â°C, which were exposed to NaCl or CaCl2 solutions of various concentrations. We determined the chloride-binding capacity, the phase assemblage and the composition of hydration phases formed. The dolomite reaction led to the formation of hydrotalcite, which contributed considerably to the chloride binding of the pastes. When the samples were exposed to CaCl2, significantly more chlorides were bound in the hydrotalcite than when the samples were exposed to NaCl. It was shown that hydrotalcite contained a similar amount of chloride per mol compared to Friedel's salt when exposed to CaCl2. By mass balance calculations, it was shown that the hydrotalcite formed in the samples containing dolomite can contribute to the chloride binding of the cement pastes to a similar extent as the Friedel's salt formed in the samples containing limestone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 107, May 2018, Pages 163-181
Journal: Cement and Concrete Research - Volume 107, May 2018, Pages 163-181
نویسندگان
Alisa Machner, Maciej Zajac, Mohsen Ben Haha, Knut O. Kjellsen, Mette R. Geiker, Klaartje De Weerdt,