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بررسی مشخصات تازه، ریزساختاری و مکانیکی خمیر ژئوپلیمری حاوی سرباره کوره آهن گدازی و خاکستر برگ بامبو | ||
تحقیقات بتن | ||
دوره 16، شماره 4 - شماره پیاپی 44، دی 1402، صفحه 17-33 اصل مقاله (2.13 M) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22124/jcr.2023.23506.1607 | ||
نویسندگان | ||
علی صدر ممتازی1؛ ابراهیم رشیدی فرد* 2 | ||
1گروه مهندسی عمران، دانشکدۀ فنی دانشگاه گیلان - رشت- ایران | ||
2عمران -سازه پردیس دانشگاه گیلان -رشت -ایران | ||
چکیده | ||
در این مقاله، اثر خاکستر برگ بامبو بر خصوصیات تازه، ریزساختاری و مکانیکی خمیر ژئوپلیمری بر پایه سرباره کوره آهن گدازی و خمیر ژئوپلیمری بر پایه سرباره کوره آهن گدازی/پودر زئولیت طبیعی مورد بررسی قرار گرفته است. علاوه بر این، اثر غلظت محلول هیدروکسید سدیم و نسبت محلول فعال کننده قلیایی به ماده پایه (Al/Bi) بر روی خصوصیات خمیر ژئوپلیمری بر پایه سرباره کوره آهن گدازی و خاکستر برگ بامبو بررسی شده است. بر اساس نتایج بدست آمده، جایگزینی 10 درصد از وزن مواد پایه با خاکستر برگ بامبو در خمیرهای ژئوپلیمری مورد مطالعه منجر به افزایش کارایی و زمان گیرش و همچنین کاهش مقدار فاز کریستالی تولید شده و در نتیجه کاهش مشخصات مکانیکی می شود. علاوه بر این نتایج نشان می دهد که افزایش غلظت محلول هیدروکسید سدیم از 8 به 16 مول در لیتر موجب کاهش کارایی، زمان گیرش و مشخصات مکانیکی خمیر ژئوپلیمری بر پایه سرباره کوره آهن گدازی و خاکستر برگ بامبو شده است. همچنین، در این نوع خمیر، افزایش نسبت Al/Bi از 5/0 به 7/0 موجب افزایش کارایی و زمان گیرش و کاهش مشخصات مکانیکی شده است. با توجه به نتایج بدست آمده، خاکستر برگ بامبو کارایی و زمان گیرش خمیرهای ژئوپلیمری بر پایه سرباره کوره آهن گدازی را افزایش می دهد اما با این حال، استفاده از آن باید تا مقدار معینی که موجب کاهش قابل توجه در مشخصات مکانیکی خمیر ژئوپلیمری نشود، محدود گردد | ||
کلیدواژهها | ||
خاکستر برگ بامبو؛ خمیر ژئوپلیمری بر پایه سرباره کوره آهن گدازی؛ پودر زئولیت طبیعی؛ زمان گیرش؛ مشخصات ریزساختاری؛ مشخصات مکانیکی | ||
مراجع | ||
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