کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8105409 1522159 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An exploratory study on high-volume fly ash concrete incorporating silica fume subjected to thermal loads
ترجمه فارسی عنوان
یک مطالعه اکتشافی در مورد حجم بالا بتن خاکستر پروازی که دارای سیلیس دیگ تحت بارهای حرارتی است
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
In this study, cement has been partially replaced with a Class F fly ash (FA) at a level of 70% to produce high-volume fly ash (HVFA) concrete (F70). F70 was modified by partially replacing FA with silica fume (SF) at levels of 10% and 20%, by weight. All HVFA concrete types were compared to the neat Portland cement (PC) concrete. After curing, the specimens were exposed to elevated temperatures ranging from 400 °C to 1000 °C with an interval of 200 °C. Weight and compressive strength before and after firing have been thoroughly explored. The various decomposition phases formed were identified using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results indicated higher relative strength of all HVFA concrete types. F70 exhibited the highest relative strength. The SF blends exhibited good fire performance up to 600 °C, then severe degradation in the residual strength was observed at 800 and 1000 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 87, 15 January 2015, Pages 735-744
نویسندگان
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