بررسی عملکرد قیر اصلاح‌شده با پلیمر اتیلن‌وینیل‌استات و پودرلاستیک با انجام آزمایش‌های کلاسیک و روسازی ممتاز

نوع مقاله : مقاله پژوهشی

نویسندگان

1 سازمان راهداری و حمل‌ونقل جاده‌ای کشور.

2 گروه مهندسی عمران، دانشگاه قم، قم، ایران

3 دانشکده مهندسی عمران، دانشگاه تفرش.

10.22091/cer.2021.6588.1229

چکیده

در این مطالعه، از پلیمر اتیلن وینیل استات و پودر لاستیک به‌عنوان اصلاح‌کننده قیر 100/85 استفاده شده است. ابتدا آزمایش‌های کلاسیک قیر شامل درجه نفوذ و نقطه نرمی روی نمونه‌ها انجام و بهبود خواص پایه قیر مشاهده گردید. در ادامه، به‌منظور ارزیابی عملکرد قیر اصلاح‌شده در دمای بالا و مقایسه آن با رفتار قیر پایه، از پروتکل روسازی ممتاز (سوپرپیو) پیروی شد. در این راستا آزمایش رئومتر برش دینامیکی انجام و شاخص G*/sinδ بر روی نمونه‌های قیر قبل و بعد از پیرشدگی بررسی شد. علاوه بر این، آزمایش رئومتر تیرچه خمشی به‌منظور ارزیابی رفتار دمای پایین قیر اصلاح‌شده، براساس بررسی شاخص‌های سختی خزشی و نرخ خزش، مطابق استاندارد SHRP صورت گرفت. نتایج نشان داد که ترکیبی از مواد افزودنی مورد استفاده، باعث بهبود خواص عملکردی قیر در دمای بالا و همچنین در دمای پایین در مقایسه با قیر پایه می‌شود. براساس آزمایش رئومتر تیرچه خمشی، 3 درصد پلیمر اتیلن‌وینیل‌استات و 4 درصد پودر لاستیک، با کاهش 12 درصدی در سختی خزشی در این ترکیب، مقادیر مطلوب برای مخلوط انتخاب شدند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Performance Investigation of Modified Bitumen With Ethylene-Vinyl Acetate Polymer and Rubber Powder by Performing Classical and Superpave Tests

نویسندگان [English]

  • Behrooz Damyar 1
  • Mohamad Hosein Dehnad 2
  • Hosein Zanjirani Farahani 3
1 Road Maintenance and Transport Organization, Iran
2 Department of Civil Engineering, University of Qom, Qom, Iran
3 Assistant Professor, Department of Civil Engineering, Tafresh University, Tafresh, Iran
چکیده [English]

In this study, ethylene vinyl acetate (EVA) polymer and rubber powder were used as 85/100 bitumen modifiers. First, classical bitumen tests including penetration grade and softening point were performed on the samples and improvement of bitumen base properties was observed. Then, in order to evaluate the performance of modified bitumen at high temperature and compare it with the behavior of base bitumen, the Superpave protocol was followed. In this way, dynamic shear rheometer (DSR) test was performed and G*/sinδ index was examined on bitumen samples before and after aging. In addition, the bending beam rheometer (BBR) test was performed to evaluate the low temperature behavior of the modified bitumen according to the SHRP standard based on the creep stiffness and creep rate indices. The results showed that the combination of used additives improves the performance properties of bitumen at high temperature and also at low temperature compared to base bitumen. Based on the BBR test, 3% EVA polymer and 4% rubber powder, with a 12% reduction in creep stiffness in this composition, were selected the optimal values for the mixture.

کلیدواژه‌ها [English]

  • Modified bitumen
  • Ethylene vinyl acetate
  • Rubber powder
  • Performance behavior
  • Superpave

مراجع

[1] Tahami, S. A., Mirhosseini, A. F., Dessouky, S., Mork, H., & Kavussi, A. (2019). “The use of high content of fine crumb rubber in asphalt mixes using dry process”. Construction and Building Materials, 222, 643-653.
[2] Shafabakhsh, G. H., Sadeghnejad, M., & Sajed, Y. (2014). “Case study of rutting performance of HMA modified with waste rubber powder”. Case Studies in Construction Materials, 1, 69-76.‏
[3] Ziari, H., Akbari, T., Farahani, H., & Goli, A. (2016). “The effect of Lucobit polymer on bitumen perfor-mance”. Petroleum Science and Technology, 34(6), 512-516.‏
[4] Rezaei, S., Ziari, H., & Nowbakht, S. (2016). “Low temperature functional analysis of bitumen modified with composite of nano-SiO2 and styrene butadiene styrene polymer”. Petroleum Science and Technology, 34(5), 415-421.‏
[5] Garcia-Morales, M., Partal, P., Navarro, F. J., & Gallegos, C. (2006). “Effect of waste polymer addition on the rheology of modified bitumen”. Fuel, 85(7-8), 936-943.‏
[6] Nemade, S. N., & Thorat, P. V. (2013). “Utilization of polymer waste for modification of bitumen in road construction”. Scientific Reviews and Chemical Communications, 2(3), 198-213.‏
[7] Ameri, M., Mansourian, A., & Sheikhmotevali, A. H. (2013). “Laboratory evaluation of ethylene vinyl ace-tate modified bitumens and mixtures based upon performance related parameters”. Construction and Building Materials, 40, 438-447.‏
[8] Fang, C., Yu, R., Li, Y., Zhang, M., Hu, J., & Zhang, M. (2013). “Preparation and characterization of an as-phalt-modifying agent with waste packaging polyethylene and organic montmorillonite”. Polymer Testing, 32(5), 953-960.‏
[9] Tóth, B., Varga, C., & Bartha, L. (2015). “Olefin–maleic-anhydride copolymer based additives: A novel approach for compatibilizing blends of waste polyethylene and crumb rubber”. Waste Management, 38, 65-71.‏
[10] Brovelli, C., Hilliou, L., Hemar, Y., Pais, J., Pereira, P., & Crispino, M. (2013). “Rheological characteristics of EVA modified bitumen and their correlations with bitumen concrete properties”. Construction and Building Materials, 48, 1202-1208.‏
[11] Sakinah, Z. A., Ratnam, C. T., Chuah, A. L., & Yaw, T. C. S. (2009). “Effect of mixing conditions on the tensile properties of ethylene vinyl acetate/waste tire dust (EVA/WTD) blend”. Polymer-Plastics Technology and Engineering, 48(11), 1139-1142.‏
[12] Saoula, S., Mokhtar, K. A., Haddadi, S., & Ghorbel, E. (2009). “Improvement of the performances of mod-ified bituminous concrete with EVA and EVA-waste”. Physics Procedia, 2(3), 1319-1326.‏
[13] Yousefi, A. (2004). “Rubber-polyethylene Modified Bitumen”. Iranian Polymer Journal, 13(2), 101-112.
[14] Arabani, M., Tahami, S. A., & Hamedi, G. H. (2018). “Performance evaluation of dry process crumb rub-ber-modified asphalt mixtures with nanomaterial”. Road Materials and Pavement Design, 19(5), 1241-1258.‏
[15] Tabatabaee, N., Tabatabaee, H. A., Sabouri, M. R., & Teymourpour, P. (2009). “Evaluation of perfor-mance grading parameters for crumb rubber modified asphalt binders and mixtures”. In Proceedings of 7th international RILEM symposium on advanced testing and characterization of bituminous materials (Vol. 1).‏
[16] Zhang, F., & Hu, C. (2016). “The research for crumb rubber/waste plastic compound modified asphalt”. Journal of Thermal Analysis and Calorimetry, 124(2), 729-741.‏
[17] Sengoz, B., & Isikyakar, G. (2008). “Evaluation of the properties and microstructure of SBS and EVA pol-ymer modified bitumen”. Construction and Building Materials, 22(9), 1897-1905.‏
[18] Badri, R. M., Sutanto, M., & k Alobaidi, M. (2020). “Investigating the rheological properties of asphalt binder incorporating different crumb rubber contents based on a response surface methodology”. Journal of King Saud University-Engineering Sciences, https://doi.org/10.1016/j.jksues.2020.10.009
[19] Aydemir, E. B., & Ozkul, M. H. (2020). “Investigation of effect of bitumen chemical composition, elasto-meric polymer and paraffin wax additives on the properties of bitumen by using response surface method”. Construction and Building Materials, 234, 117414.‏
[20] Khairuddin, F. H., Alamawi, M. Y., Yusoff, N. I. M., Badri, K. H., Ceylan, H., & Tawil, S. N. M. (2019). “Physicochemical and thermal analyses of polyurethane modified bitumen incorporated with Cecabase and Rediset: optimization using response surface methodology”. Fuel, 254, 115662.‏
[21] del Barco Carrion, A. J., Subhy, A., Rodriguez, M. A. I., & Presti, D. L. (2020). “Optimisation of liquid rub-ber modified bitumen for road pavements and roofing applications”. Construction and Building Materials, 249, 118630.‏
ارسال نظر در مورد این مقاله
CAPTCHA Image

فایل ها

هم رسانی

ارجاع به این مقاله

آمار