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بررسی تاثیر باطله زغالسنگ بر رفتار مکانیکی بتن سبز | ||
تحقیقات بتن | ||
مقاله 3، دوره 14، شماره 4 - شماره پیاپی 36، دی 1400، صفحه 31-42 اصل مقاله (551.22 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22124/jcr.2021.19171.1489 | ||
نویسندگان | ||
مرتضی نقی پور* 1؛ شیرین احمدی2؛ فاطمه گرجی نژاد3 | ||
1عضو هیات علمی دانشگاه صنعتی نوشیروانی بابل | ||
2گروه عمران دانشگاه علوم و فنون مازندران | ||
3گروه عمران دانشگاه علوم و فنون مازندران بابل | ||
چکیده | ||
کاهش منابع طبیعی سبب تجدید نظر در استفاده از سنگدانههای طبیعی بتن شده است و محققین جهت کاهش بحران ضایعات و محیط زیست، به دنبال افزایش استفاده از ضایعات صنعتی میباشند، در این پژوهش جهت بررسی خصوصیات مکانیکی، سه سری نمونه بتنی با نسبت آب به سیمان یکسان(w/c=0.4) و درصدهای مختلف باطله زغال سنگ درنظر گرفته شد. سری اول طرح شاهد، سری دوم و سوم به ترتیب شامل درشت دانه و ریزدانهی باطله زغالسنگ بوده که جایگزین 5، 10، 15، 20 درصد از شن و ماسه شده است. طبق نتایج حاصل از آزمایشات در جایگزینی ۱۰ درصدی باطله زغال سنگ، عملکرد بهتری در مقاومت فشاری، مدول الاستسیته و سرعت عبور امواج نسبت به طرح شاهد مشاهده شده است، همچنین جایگزینی باطله زغالسنگ در بتن همواره موجب کاهش مقاومت کششی بتن میشود. بنابراین جایگزینی مناسب باطله در بتن، سبب بهبود برخی خواص مکانیکی و کاهش اثرات مخرب باطله بر محیطزیست میشود. | ||
کلیدواژهها | ||
بتن سبز؛ باطله زغال سنگ؛ خواص مکانیکی؛ مواد جایگزین سنگدانه | ||
مراجع | ||
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