ارزیابی آزمایشگاهی تأثیر استفاده از ضایعات پلاستیکی بر خواص عملکردی قیر

نویسنده

گروه ارزیابی و آمایش سرزمین، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

چکیده

به دلیل افزایش جمعیت، دفع انباشت زباله در جهان به یک چالش مهم تبدیل شده است. مسائل زیست تخریب پذیری از تجمع دو نوع مواد زائد غیرقابل تجزیه زیستی ناشی می­شود: پلاستیک و لاستیک. روسازی­های آسفالتی تنش­های مختلفی را که ناشی از تراکم بالای ترافیک است، تجربه می­کنند که منجر به خرابی­های متعددی می­شود. هدف این مطالعه تاثیر ضایعات پلاستیک و لاستیک
بر خواص عملکردی قیر است. به طور خاص، این مطالعه افزودن پودر لاستیک زباله (4٪ و 6٪) و ضایعات پلی اتیلن ترفتالات (۱(PET  ۴٪و 6٪) را به قیر با عیار 85/100 بررسی می­کند. سه آزمایش برای ارزیابی خواص فیزیکی قیر انجام شد که شامل نقاط نرم شدن، تست‌های نفوذ و تست‌های ویسکوزیته می‌شود. نتایج نشان می‌دهد که درجه نفوذ قیر با افزودن 6 درصد لاستیک تایر ضایعاتی و PET در مقایسه با مخلوط 4 درصد برای هر دو ماده ضایعاتی، 9 درصد کمتر بود. علاوه بر این، قیر اصلاح شده با پودر لاستیک در مقایسه با قیر معمولی (48  درجه سانتی­گراد­، 1800 ثانیه) و قیر اصلاح شده با (اPET 53 درجه سانتی­گراد­،  2580 ثانیه) نقاط نرم شدن (79 ◦C، 2580 s) و ویسکوزیته بالاتری را نشان داد. این تفاوت­ها نشان می­دهد که ترکیب PET زباله و لاستیک تایر باعث بهبود خواص مهندسی قیر می­شود. این مطالعه اهمیت افزایش نقطه نرمی قیر در مناطق با دمای بالا را برجسته می­کند.

کلیدواژه‌ها

عنوان مقاله [English]

Laboratory Evaluation of the Effect of Using Plastic Waste on the Performance Properties of Bitumen

نویسنده [English]

  • Azin Chitsazan
Department of Land Use Planning and Assessment, Science and Research Branch, Islamic Azad University, Tehran, Iran
چکیده [English]

Due to the increase in population, disposal of waste accumulation in the world has become an important challenge. Biodegradability issues arise from the accumulation of two
non-biodegradable waste materials: plastic and rubber. Asphalt pavements experience various stresses caused by high traffic density, which leads to numerous failures. The aim of this study is the effect of plastic and rubber waste on the functional properties of bitumen. Specifically, this study investigates the addition of waste rubber powder (4% and 6%) and waste polyethylene terephthalate (PET 1 (4% and 6%) to 100/85 bitumen. Three tests to evaluate the physical properties Bitumen was conducted, which includes softening points, penetration tests and viscosity tests. The results show that the penetration degree of bitumen with the addition of 6% waste tire rubber and PET was 9% lower compared to the 4% mixture for both waste materials. Therefore, bitumen modified with rubber powder has higher softening points (79 ◦C, 2580 s) and viscosity compared to normal bitumen (48 ◦C, 1800 s) and PET modified bitumen (53 ◦C, 2580 s) Showed. These differences indicate that the combination of waste PET and tire rubber improves the engineering properties of bitumen. This study highlights the importance of increasing the softening point of bitumen in high temperature regions.

کلیدواژه‌ها [English]

  • Waste Polyethylene Terephthalate
  • Rubber Powder
  • Functional Properties
  • Bitumen

مراجع

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پژوهشنامه حمل و نقل
دوره 21، شماره 1 - شماره پیاپی 78
فروردین 1403
صفحه 369-379

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