کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6714672 | 1428737 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of nano-silica on hydration and conversion of calcium aluminate cement
ترجمه فارسی عنوان
اثر نانو سیلیس بر هیدراتاسیون و تبدیل سیمان آلومینات کلسیم
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کلمات کلیدی
سیمان آلومینات کلسیم، نانو سیلیکا، تبدیل، هیدراتاسیون، مرحله متاستاز
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This study investigated the effect of nano-silica on the hydration and conversion of calcium aluminate cement (CAC). The specimens were exposed to 60â¯Â°C to accelerate the transformation of hydrates in CAC after initial curing at 20â¯Â°C. At an early stage of curing, adding nano-silica in CAC mitigated the formation of C3AH6 and AH3. At 1â¯day after exposure to 60â¯Â°C, the compressive strength reduction was observed in all specimens, and it was closely related to the conversion of CAH10. That is, the conversion of all specimens occurred at 28â¯days after exposure, which resulted in a reduction in compressive strength. However, adding nano-silica mitigated the conversion from metastable phases (CAH10 and C2AH8) to stable phases (C3AH6 and AH3). As a result, the extent of compressive strength loss could be reduced by the formation of strätlingite (C2ASH8) in the case of 4% addition of nano-silica. In conclusion, adding nano-silica in CAC was effective regarding structural integrity by delaying the conversion of metastable hydrates, as well as maintaining the long-term strength of CAC by forming strätlingite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 169, 30 April 2018, Pages 819-825
Journal: Construction and Building Materials - Volume 169, 30 April 2018, Pages 819-825
نویسندگان
H.M. Son, S.M. Park, J.G. Jang, H.K. Lee,