کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5116884 1485225 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of belite cement from nano-silica extracted from two rice husk ashes
ترجمه فارسی عنوان
سنتز سیمان شبه نان از نانو سیلیکا استخراج شده از دو خاکستر پوسته برنج
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Nano-silicas extracted from a pure rice husk ash calcined in the laboratory (RHA) and ash from an impure industrial rice husk waste (BRHA), were used to form belite cement by firing with two different calcium sources (calcium carbonate and calcium nitrate). The nano-silica extracted from RHA was highly reactive due to its high pore volume and low activation energy of dehydration. The formation of belite cement from both nano-silicas was studied by firing with two different calcium sources, Ca(NO3)2 and CaCO3 at 800-1100 °C. Both nano-silicas formed the principal phase in belite cement (larnite or β-C2S) at temperatures as low as 800 °C, especially with calcium nitrate as the calcium source. Thus, highly impure BRHA is shown to be very suitable as a starting material for the low-temperature production of belite cement, especially in conjunction with calcium nitrate as the calcium source.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Management - Volume 190, 1 April 2017, Pages 53-60
نویسندگان
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