بررسی آزمایشگاهی رفتار خمشی و ضربه‌ای دال‌های بتنی الیافی انعطاف‌پذیر

مهندسی عمران فردوسی

مقاله 6، دوره 31، شماره 1 - شماره پیاپی 20، فروردین 1397، صفحه 81-98   

نوع مقاله: پژوهشی

شناسه دیجیتال (DOI): 10.22067/civil.v31i1.54864

نویسندگان

محمد کرمی؛ محمد کاظم شربتدار^*

دانشگاه سمنان

چکیده

ویژگی‌های نمونه‌های بتنی الیافی PVA و PP تحت آزمایش سقوط ضربه و استاتیکی خمشی با پنجاه و شش نمونه‌ پانل مسلح با الیاف در این مقاله بررسی شده‌اند که نتایج همگی حاکی از افزایش قابل‌توجه پارامتر‌های مؤثر در ضربه، اعم از مقاومت ضربه‌ای و میزان جذب انرژی می‌باشد. افزایش 50 درصدی الیاف PVA منجر به افزایش 54 درصد نیرو و افزایش دو برابری در میزان جذب انرژی می‌شود و نیروی در نمونۀ PVA با 3% الیاف، 87 درصد بیش از نیرو در نمونۀ PP با مقدار الیاف مشابه است. مقاومت ضربه‌ای نمونه‌های دارای الیاف PVA تقریباً سه‌برابر نمونه‌های دارای الیاف PP به‌دست آمده است.

کلیدواژه‌ها

بتن الیافی انعطاف‌پذیر؛ مقاومت ضربه؛ جذب انرژی؛ الیاف PVA؛ مقاومت خمشی

سایر فایل های مرتبط با مقاله

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