بررسی تأثیر استفاده از نانوکامپوزیت پلی‏ یورتانی بر اصلاح خواص قیر

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری راه و ترابری، دانشکده مهندسی عمران، دانشگاه سمنان

2 استاد، گروه راه و ترابری، دانشکده مهندسی عمران، دانشگاه سمنان، سمنان، ایران

3 استادیار، گروه عمران، دانشکده مهندسی عمران و منابع زمین، واحد تهران مرکزی، دانشگاه آزاد اسلامی، تهران، ایران

چکیده

قیر به عنوان یکی از اجزای تشکیل دهنده آسفالت، نقش مهمی در خواص و عملکرد آسفالت و همچنین عمر و پایداری آن دارد. اما ساختار آن به دلیل خواص مکانیکی نامطلوب، پایداری حرارتی محدود و عدم مقاومت در برابر ترک­خوردگی تحت شرایط محیطی نیاز به اصلاح دارد. در این تحقیق، با هدف افزایش استحکام و انعطاف­پذیری، بهبود خصوصیات عملکردی و حرارتی، افزایش چسبندگی و جلوگیری از جدایی فازی اصلاح‌کننده و قیر از پلی­یورتان منتهی به گروه عاملی ایزوسیانات حاوی نانولوله­های کربنی استفاده شد. به این منظور، ابتدا پیش­پلیمر یورتانی منتهی به گروه­ عاملی ایزوسیانات تهیه شده و سپس نانولوله­های کربنی به میزان 5/0، 0/1 و 5/1 درصد وزنی به آن اضافه شد. بر اساس آزمون تنش کششی و آنالیز گرماوزن‌سنجی، نمونه حاوی 5/1 درصد نانوذره به عنوان نانوکامپوزیت بهینه انتخاب شده و در ادامه با مقادیر 2، 4، 6 و 8 درصد قیر ترکیب شد. آزمون FTIR ایجاد پیوندهای شیمیایی بین نانوکامپوزیت و قیر را تأیید کرد. جهت بررسی خواص و عملکرد نمونه­های حاصل، آنالیز مورفولوژی، آزمون ویسکومتری (RV)، آزمون رئومتر برش دینامیک (DSR) و همچنین آزمایش خزش و بازگشت در چند سطح تنش(MSCR) انجام شد. نتایج حاصل از این آزمون­ها نشان داد که حضور نانوکامپوزیت در ساختار قیر باعث افزایش الاستیسیته و به­هم پیوستگی ساختار قیر شده و اثرات منفی ناشی از افزایش تنش و دما در خواص قیر را کاهش می­دهد و نانوکامپوزیت تهیه شده در این پژوهش می­تواند به عنوان گزینه ­ای مناسب جهت بهبود عملکرد قیر در دمای زیاد و متوسط به­ کار رود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigating the Effect of Using Polyurethane Nanocomposites on Modification of Bitumen Properties

نویسندگان [English]

  • Seyed Reza Sajadi 1
  • Gholam Ali Shafabakhsh 2
  • Hassan Divandari 3
1 PhD Candidate of Raod and Transportation, Faculty of Civil Engineering, Semnan University, Semnan, I.R. Iran
2 Professor, Department of Road and Transportation, Faculty of Civil Engineering, Semnan University, Semnan, I. R. Iran.
3 Assistant Professor, Department of Civil Engineering, Central Tehran Branch, Islamic Azad University, Tehran, I. R. Iran.
چکیده [English]

Bitumen, as one of the constituent elements of asphalt, plays an important role in the properties and performance of asphalt as well as its longevity and stability. However, its structure requires modification due to low mechanical properties, limited thermal stability, and susceptibility to cracking under environmental conditions. In this study, in order to increase the strength and flexibility, improving functional and thermal properties, enhance adhesion, and prevent phase separation, a modifier based on NCO-terminated polyurethane/CNT were used. For this purpose, NCO-terminated polyurethane pre-polymer was prepared, and then CNTs were added to it at 0.5%, 1%, and 1.5% wt.%. Based on tensile and TGA tests, the sample containing 1.5% nanoparticles was selected as the optimum nanocomposite and subsequently combined with bitumen and then it was mixed with bitumen at 2, 4, 6 and 8 percent. FTIR test confirmed the chemical bonds between the nanocomposite and bitumen. To investigate the properties and performance of the resulting samples, morphological analysis, viscometry (RV) test, and rheological (DSR) tests for fatigue resistance and rutting under environmental conditions were performed. Also, results of multiple stress creep-recovery (MSCR) test was compared with results of rheology analysis and it was shown that the presence of nanocomposite in the structure of bitumen increased the elasticity and cohesion of the modified bitumen structure. It reduces the negative effects caused by the increase in stress and temperature in bitumen properties and the nanocomposite prepared in this research can be used as a suitable option to improve bitumen performance at high and medium temperatures.

کلیدواژه‌ها [English]

  • Polyurethane
  • NCO-terminated polyurethane
  • CNT
  • Modification of bitumen

مراجع

Abedi, M., Fangueiro, R. and Correia, A. G. 2021. “A review of intrinsic self-sensing cementitious composites and prospects for their application in transport infrastructures”. Constr. Build. Mater., 310: 125139.
Ashish, P. K. and Singh, D. 2021. “Use of nanomaterial for asphalt binder and mixtures: a comprehensive review on development, prospect, and challenges”. Road Mater. Pavement Design, 22: 492-538.
Behnood, A. and Gharehveran, M. M. 2019. “Morphology, rheology, and physical properties of polymer-modified asphalt binders”. Eur. Polym. J., 112: 766-791.
Brasileiro, L., Moreno-Navarro, F., Tauste-Martínez, R., Matos, J. and Rubio-Gámez, M. D. C. 2019. “Reclaimed polymers as asphalt binder modifiers for more sustainable roads: A review”. Sustain., 11: 646.
Caputo, P., Porto, M., Angelico, R., Loise, V., Calandra, P. and Rossi, C. O. 2020. “Bitumen and asphalt concrete modified by nanometer-sized particles: Basic concepts, the state of the art and future perspectives of the nanoscale approach”. Adv. Colloid Interf. Sci., 285: 102283.
Cardone, F., Frigio, F., Ferrotti, G. and Canestrari, F. 2015. “Influence of mineral fillers on the rheological response of polymer-modified bitumens and mastics”. J. Traffic Transport. Eng. (English edition), 2: 373-381.
Carrera, V., Cuadri, A., García-Morales, M. and Partal, P. 2015. “The development of polyurethane modified bitumen emulsions for cold mix applications. Mater. Struct., 48: 3407-3414.
Cong, L., Yang, F., Guo, G., Ren, M., Shi, J. and Tan, L. 2019. “The use of polyurethane for asphalt pavement engineering applications: A state-of-the-art review”. Constr. Build. Mater., 225: 1012-1025.
Cuadri, A., García-Morales, M., Navarro, F. and Partal, P. 2014. “Processing of bitumens modified by a bio-oil-derived polyurethane”. Fuel, 118: 83-90.
Eisa, M. S., Mohamady, A., Basiouny, M. E., Abdulhamid, A. and Kim, J. R. 2022. “Mechanical properties of asphalt concrete modified with carbon nanotubes (CNTs)”. Case Stud. Constr. Mater., 16: e00930.
Ghoreishi, A., Koosha, M. and Nasirizadeh, N. 2020. “Modification of bitumen by EPDM blended with hybrid nanoparticles: Physical, thermal, and rheological properties”. J. Thermoplastic Compos. Mater., 33: 343-356.
Gong, X., Liu, Q., Liu, X., Wan, P., Jiang, P., Chen, S., Wang, H. and Wu, S. 2023. “Green synthesis of end-capped polyurethane prepolymer with high storage stability and its effects on bitumen properties”. Constr. Build. Mater., 401: 132860.
Hamedi, G. H., Saedi, D. and Ghahremani, H. 2020. “Effect of short-term aging on low-temperature cracking in asphalt mixtures using mechanical and thermodynamic methods”. J. Mater. Civ. Eng., 32: 04020288.
Huang, G., Yang, T., He, Z., Yu, L. and Xiao, H. 2022. “Polyurethane as a modifier for road asphalt: A literature review”. Constr. Build. Mater., 356: 129058.
Jin, X., Guo, N., You, Z., Wang, L., Wen, Y. and T., Y. 2020. “Rheological properties and micro-characteristics of polyurethane composite modified asphalt”. Constr. Build. Mater., 234: 117395.
Kök, B. V., Aydoğmuş, E., Yilmaz, M. and Akpolat, M. 2021. “Investigation on the properties of new palm-oil-based polyurethane modified bitumen”. Constr. Build. Mater., 289: 123152.
Li, T., Carreño Gómez, N. H., Lu, G., Liang, D., Wang, D. and Oeser, M. 2021a. “Use of polyurethane precursor–based modifier as an eco-friendly approach to improve performance of asphalt”. J. Transport. Eng., Part B: Pavements, 147: 04021031.
Li, Z., Yu, X., Liang, Y. and Wu, S. 2021b. “Carbon nanomaterials for enhancing the thermal, physical and rheological properties of asphalt binders”. Mater., 14(10): 2585.
Liu, H., Zeiada, W., Al-Khateeb, G. G., Shanableh, A. and Samarai, M. 2021. “Use of the multiple stress creep recovery (MSCR) test to characterize the rutting potential of asphalt binders: A literature review”. Constr. Build. Mater., 269: 121320.
Liu, H., Zhang, Z., Zhu, Y., Sun, J., Wang, L., Huang, T. and Chen, L. 2022. “Modification of asphalt using polyurethanes synthesized with different isocyanates”. Constr. Build. Mater., 327: 126959.
Mallick, R. B. and El-Korchi, T. 2022. “Pavement engineering: principles and practices”. CRC Press.
Masad, E., Roja, K. L., Rehman, A. and Abdala, A. 2020. “A review of asphalt modification using plastics: A focus on polyethylene”. Texas A&M University: Qatar, Doha.
Masri, T. D. K. A., Ferdaus, R. and Ramadhansyah, P. 2022. “Sustainable use of polymer in asphalt mixture: A review”. Constr., 2: 12-21.
Mersha, D. A. and Sendekie, Z. B. 2022. “High-temperature performance enhancement of bitumen by waste PET-derived polyurethane”. Adv. Mater. Sci. Eng., 2022.
Mohanty, D., Mohanty, S. and Kanny, K. 2023. “Synthesis of castor oil‐based polyols applicable in acrylated polyurethane coating with improved mechanical properties”. Polym. Int., 72: 230-242.
Porto, M., Caputo, P., Loise, V., Eskandarsefat, S., Teltayev, B. and Oliviero Rossi, C. 2019. “Bitumen and bitumen modification: A review on latest advances”. Appl. Sci., 9: 742.
Rahman, M. 2016. “Highway engineering-pavement, materials, and control of quality”.  Proceedings of the Institution of Civil Engineers-Transport, Thomas Telford Ltd.
Samal, K., Guler, M., Daniyar, B., Zhanar, K. and Aigul, K. 2022. “The polymer effects on bitumen performance properties in Kazakhstan”. Geomate J., 23: 34-43.
Stern, T. 2019. “Conclusive chemical deciphering of the consistently occurring double‐peak carbonyl‐stretching FTIR absorbance in polyurethanes”. Polym. Adv. Technol., 30: 675-687.
Tang, Y., Fu, Z., Raos, G., Ma, F., Zhao, P. and Hou, Y. 2023. “Molecular dynamics simulation of adhesion at the asphalt-aggregate interface: A review”. Surfaces Interfaces: 103706.
Ul Haq, M. F., Ahmad, N., Nasir, M. A., Jamal, Hafeez, M., Rafi, J., Zaidi, S. B. A. and Haroon, W. 2018. “Carbon nanotubes (CNTs) in asphalt binder: Homogeneous dispersion and performance enhancement”. Appl. Sci. (Switzerland), 8: 1-19.
Wang, C., Chen, X., Xie, H. and Cheng, R. 2011. “Effects of carbon nanotube diameter and functionality on the properties of soy polyol-based polyurethane”. Compos. Part A: Appl. Sci. Manuf., 42: 1620-1626.
Wang, Y., Wang, W. and Wang, L. 2022. “Understanding the relationships between rheology and chemistry of asphalt binders: A review”. Constr. Build. Mater., 329: 127161.
Wei, K., Ma, B. and Duan, S. 2019. “Preparation and properties of bitumen-modified polyurethane solid–solid phase change materials”. J. Mater. Civ. Eng., 31: 04019139.
Xin, X., Yao, Z., Shi, J., Liang, M., Jiang, H., Zhang, J., Zhang, X. and Yao, K. 2020. “Rheological properties, microstructure and aging resistance of asphalt modified with CNTs/PE composites”. Constr. Build. Mater., 262: 120100.
Xue, Y., Liu, C., Lv, S., Ge, D., Ju, Z. and Fan, G. 2022. Research on rheological properties of CNT-SBR modified asphalt”. Constr. Build. Mater., 361: 129587.
Yang, Q., Liu, Q., Zhong, J., Hong, B., Wang, D. and Oeser, M. 2019. “Rheological and micro-structural characterization of bitumen modified with carbon nanomaterials”. Constr Build. Mater., 201: 580-589.
Yang, S., Bieliatynskyi, A., Pershakov, V., Shao, M. and Ta, M. 2022. “Asphalt concrete based on a polymer–bitumen binder nanomodified with carbon nanotubes for road and airfield construction”. J. Polym. Eng., 42: 458-466.
Zhambolova, A., Vocaturo, A. L., Tileuberdi, Y., Ongarbayev, Y., Caputo, P., Aiello, I., Rossi, C. O. and Godbert, N. 2020. “Functionalization and modification of bitumen by silica nanoparticles”. Appl. Sci. (Switzerland), 10: 6065.
Zhang, L., Li, P., Hu, G., Zhang, S., Hong, B., Wang, H., Wang, D. and Oeser, M. 2021. “Study on the aging resistance of polyurethane precursor modified bitumen and its mechanism”. Sustain., 13: 9520.
Zhu, J., Ghafoori, E. and Dinegdae, Y. 2020. “Characterization of asphalt mixtures and bitumen to minimize shear-related distresses in asphalt pavement: State of the art, series”. Trafikverkets forskningsportföljer.

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  • تاریخ دریافت: 26 آذر 1402
  • تاریخ بازنگری: 10 بهمن 1402
  • تاریخ پذیرش: 10 اسفند 1402

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