بررسی تأثیر استفاده از پسماند صنعتی مس در عملکرد آسفالت حفاظتی لایه نازک

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، دانشکده فنی و مهندسی، گروه عمران، دانشگاه آزاد اسلامی، واحد تهران جنوب

2 دانشیار، دانشکده فنی و مهندسی، گروه عمران، دانشگاه آزاد اسلامی، واحد تهران جنوب

3 استادیار، دانشکده فنی و مهندسی، گروه مهندسی معدن- مکانیک سنگ، دانشگاه آزاد اسلامی، واحد تهران جنوب

4 استادیار، دانشکده فنی و مهندسی، گروه عمران، دانشگاه آزاد اسلامی، واحد تهران جنوب

چکیده

تقاضا برای استفاده از پسماندهای صنعتی به دلیل اثرات زیست‌محیطی و محدودیت منابع طبیعی به میزان قابل ‌توجهی افزایش ‌یافته است. یکی از این پسماندها که مشکلات زیست‌محیطی را به همراه داشته، پسماند مس (مس‏باره) (CW) است. این ماده به‌عنوان مواد زائد طبقه­بندی می‌شود. از این جهت، باعث مشکلات زیست‌محیطی، به‌ویژه دفع پسماند، می‌شود. هدف اصلی این مطالعه، بررسی کاربرد CW در مخلوط آسفالت حفاظتی در مقایسه با سنگدانه معدنی (MA) است. برای این منظور، آزمایش‌های چسبندگی مرطوب، سایش در شرایط مرطوب، بارگذاری چرخ- جابه‌جایی و بارگذاری چرخ- چسبندگی ماسه در پنج ترکیب مختلف شامل CW0+MA100، CW10+MA90، CW20+MA80، CW30+MA70 و CW40+MA60، بر اساس وزن کل سنگدانه، انجام شده است. بر اساس نتایح، مخلوط CW30+MA70 با 8 درصد قیر باقیمانده، چسبندگی مرطوب، سایش، جابه­جایی عمودی و جانبی را به ترتیب در حدود 23، 22، 39 و 33 درصد بهبود داده است. از مهمترین دلایل جایگزینی سنگدانه توسط مس‏باره، تیزگوشگی و درصد زیاد آهن و سیلیس می­باشد. به همین دلیل، مطابق آنالیز واریانس، مس‏باره نقش مؤثرتری در چسبندگی و جابه­جایی مخلوط­های آسفالتی نسبت به قیر باقیمانده داشته است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigating the effect of using copper industrial waste on the performance of thin layer surface treatment

نویسندگان [English]

  • Ali Zalnezhad 1
  • Seyed Azim Hosseini 2
  • Reza Shirinabadi 3
  • Mohammad Emami Korandeh 4
1 Department of Civil Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
2 Department of Civil Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
3 Department of Petroleum and Mining Engineering, South Tehran Branch, Islamic Azad University
4 Department of Civil Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
چکیده [English]

The demand for using industrial waste has increased significantly due to their environmental impacts and limitation of natural resources. Copper waste (CW) is among those that are known to cause environmental problems. Categorized under waste materials, it causes various environmental problems, especially those related to waste disposal. The main purpose of the present study is to investigate the application of CW, as compared to mineral aggregate (MA), in surface treatment. For this purpose, various tests, including wet cohesion test, wet track abrasion test, loaded wheel – displacement test, and loaded wheel – sand adhesion test, were performed on five different mixtures designated as CW0+MA100, CW10+MA90, CW20+MA80, CW30+MA70, and CW40+MA60, with the designations defined based on total aggregate weight. Results showed that, thanks to its unique physical and chemical characteristics, the replaced CW could improve the treatment performance, especially in the CW30+MA70 sample, in terms of abrasion, wet cohesion, and vertical and lateral displacements by about 23, 22, 39, and 33%, respectively, at a residual asphalt of 8%. Also, regarding the analysis of variance, the copper slag is a more effective factor with respect to residual bitumen in increasing the cohesion and reducing the vertical and lateral deformations due to traffic loading

کلیدواژه‌ها [English]

  • Copper waste
  • Residual asphalt
  • Cohesion
  • Stripping
  • Displacement

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سابقه مقاله

  • تاریخ دریافت: 24 مهر 1401
  • تاریخ بازنگری: 27 آبان 1401
  • تاریخ پذیرش: 05 آذر 1401

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