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کاربرد باطلههای فرآوری مس در تهیه بتن به منظور جلوگیری از آلودگی محیطزیست | ||
| نشریه مهندسی عمران امیرکبیر | ||
| مقاله 9، دوره 56، شماره 6، 1403، صفحه 705-728 اصل مقاله (1.4 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/ceej.2024.22706.8033 | ||
| نویسندگان | ||
| یوسف درزاده؛ علی اکبر دایا؛ مرضیه حسینی نسب* | ||
| گروه مهندسی معدن، دانشکده مهندسی شهید نیکبخت، دانشگاه سیستان و بلوچستان، زاهدان، ایران | ||
| چکیده | ||
| باطلههای مس محصول جانبی کارخانههای فرآوری مس هستند که کاربرد مناسبی برایشان تعریف نشده است و به دلیل حجم زیاد و خصوصیات فیزیکی و شیمیایی آن، مشکلات زیستمحیطی و اقتصادی بسیاری را به همراه دارند. پژوهش اخیر به بررسی تأثیر استفاده از باطله کارخانه فرآوری مس به عنوان جایگزین سیمان بر خواص مکانیکی و دوام بتن میپردازد. برای این منظور، پنج طرح اختلاط با درصدهای مختلف از باطله مس معدن چهل کوره در ساخت بتن استفاده شد. این باطلهحاوی سیلیسیم، آهن، منیزیم و آلومینیوم است. 105 نمونه شامل 75 نمونه مکعبی با ابعاد 10×10×10 سانتیمتر و 30 نمونه استوانهای با ابعاد 15 ×30 سانتیمتر تهیه شد. نتایج نشان داد که استفاده از 5 درصد باطلهمس باعث بهبود مقاومت فشاری نسبت به نمونه شاهد میشود. اما درصورت افزایش درصد باطله مس به 10 درصد، کاهش در مقاومت فشاری مشاهده شد که با وجود این کاهش، همچنان مقدار مقاومت فشاری، بیشتر از نمونه شاهد بود. با استفاده از باطله مس، کاهش ناچیزی در مقاومت کششی رخ داد. آزمایشهای مقاومت الکتریکی و جذب آب در سن 28 روز نشان دادند که استفاده از باطله مس باعث کاهش ناچیز در مقاومت الکتریکی و جذب آب بتن میشود. همچنین، افزودن 5 تا 10 درصد باطله مس بجای سیمان باعث کاهش هزینههای تولید بتن و کاهش مصرف انرژی با مصرف کمتر سیمان، کاهش آسیب به محیط زیست با تولید کمتر سیمان و مصرف بهینه باطلههای معادن مس خواهد شد. بنابراین، باطله مس به عنوان یک جایگزین مناسب برای جایگزینی جزئی سیمان در بتن قابلاستفاده است. | ||
| کلیدواژهها | ||
| باطلههای معدنی؛ معدن مس چهل کوره؛ مصالح ساختمانی؛ محیط زیست؛ بتن | ||
| موضوعات | ||
| تکنولوژی بتن؛ دوام بتن؛ محیط زیست؛ مدیریت پسماند ساختمانی؛ مصالح ساختمانی؛ مکانیک سنگ؛ مهندسی محیط زیست | ||
| عنوان مقاله [English] | ||
| The Use of Copper Tailing of Mineral Processing Plant in the Preparation of Concrete in order to Prevent Environmental Pollution | ||
| نویسندگان [English] | ||
| Yusuf Dorzadeh؛ Aliakbar Daya؛ Marzieh Hosseini Nasab | ||
| University of Sistan and Baluchestan | ||
| چکیده [English] | ||
| Copper tailing is the by-product of copper processing plants, and due to their large volume and physical and chemical characteristics, they bring many environmental and economic problems. The recent research examines the effect of using mineral processing tailings of copper as a substitute for cement on the mechanical properties and durability of concrete. For this purpose, five mixing plans with different percentages of copper tailings from the Chehel-Koreh mine were used in concrete production. This tail contains Si, Fe, Mg, and Al. 105 samples including 75 cubic samples with dimensions of 10×10×10 cm and 30 cylindrical samples with dimensions of 15×30 cm were prepared. The results showed that using 5% copper tail improved the compressive strength compared to the control sample. If the copper tail increased to 10%, a decrease in the compressive strength was observed, and despite this decrease, the compressive strength was still higher than the control sample. By using copper tailings, there was a slight decrease in tensile strength. Electrical resistance and water absorption tests at the age of 28 days showed that using copper tail causes a slight decrease in electrical resistance and water absorption. In addition, adding 5 to 10 percent copper tailings instead of cement will reduce concrete production costs and energy consumption with less cement consumption, reduce damage to the environment with less cement production, and optimal use of copper tailings. Therefore, copper tailings can be used as a suitable alternative for partial replacement of cement in concrete. | ||
| کلیدواژهها [English] | ||
| Mineral Tailings, Chehel-Koreh Copper Mine, Construction Materials, Environment, Concrete | ||
| مراجع | ||
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