بررسی فنی و اقتصادی بازیافت سرد آسفالت با قیر امولسیونی به روش سطح پاسخ

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه عمران، دانشگاه محقق اردبیلی، اردبیل، ایران

2 دانش آموخته کارشناسی ارشد، دانشکده فنی، دانشگاه آزاد اسلامی، اهر، ایران

3 استادیار، دانشکده فناوری های نوین، دانشگاه محقق اردبیلی، اردبیل، ایران

چکیده

یکی از روش­ های رایج بازیافت، استفاده مجدد از خرده آسفالت همراه با سیمان برای تقویت لایه اساس و جایگزین آن در لایه­ های روسازی می­ باشد که انتخاب طرح اختلاط مناسب ضمن بالا بردن کیفیت لایه روسازی، در کاهش هزینه ­های اجرایی بسیار تأثیرگذار است. در این تحقیق بازیافت سرد آسفالت با قیر امولسیونی با استفاده از روش سطح پاسخ مورد بررسی قرار گرفته است. در این راستا، به روش سطح پاسخ و ساخت نمونه ­های مخلوط آسفالت سرد بازیافتی با استفاده از مصالح خرده آسفالتی، قیر امولسیونی کاتیونیک دیر شکن و سیمان پرتلند نوع II به بررسی مشخصات آزمایشگاهی و اقتصادی این مخلوط­ ها پرداخته شد. استقامت و روانی مارشال، وزن مخصوص حقیقی و درصد فضای خالی مخلوط آسفالتی با انجام آزمایش­ ها تعیین شد. با انجام تحلیل واریانس بر روی مدل­ های پیشنهادی و تعیین پارامترهای مؤثر، معادلات ریاضی بین پارامترهای مستقل و وابسته ارائه گردید و تأثیر پارامترها مورد بررسی قرار گرفت. در نهایت با انجام بهینه­ سازی طرح اختلاط مناسبی که دارای مطلوبیت 60 درصد می ­باشد برای بازیافت سرد آسفالت پیشنهاد گردید. نتایج آزمایش ­ها نشان داد که مقدار سیمان و قیر امولسیونی اثر معناداری بر استقامت مارشال دارد. برای مخلوط آسفالت سرد حاوی 4 درصد قیر، افزایش سیمان از مقدار صفر به 2 درصد، استقامت مارشال را 15/4 درصد افزایش می‌دهد. همچنین در رفتار روانی مارشال، مقدار آب اثر معنادار ایجاد می ­کند. در مخلوط آسفالت سرد ساخته شده با 4 درصد قیر و بدون سیمان، کاهش آب از مقدار 4 به 2 درصد، روانی مارشال را 20/8 درصد تغییر می‌دهد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Technical and Economical Evaluation of Cold Recycled Asphalt Using Emulsified Asphalt Binder through Response Surface Method and Developing an Optimized Mix Design

نویسندگان [English]

  • Babak Golchin 1
  • Bahman Nori 2
  • Ramin Meshkabadi 3
1 Department of civil engineering, University of Mohaghegh Ardabili, Ardabil, Iran
2 MSc,, Islamic Azad University, Ahar Branch, Ahar, Iran
3 Department of Engineering Sciences, Faculty of Advanced Technologies, University of Mohaghegh Ardabili, Namin, Iran
چکیده [English]

One of the common recycling methods of asphalt is the reuse of crushed asphalt with cement as a reinforcement of the base layer and its replacement in pavement layers. In this research, cold recycling of asphalt using emulsified asphalt binder has been investigated through the response surface method. In this regard, the technical and economic aspects of 15 fabricated samples of recycled cold asphalt mixtures using crushed asphalt materials, cationic emulsified binder and Portland cement (type II) were investigated. Marshall strength and flow, real specific weight and air void percentage of the mixture were determined by experiments. By performing an analysis of variance on the proposed models and determining the effective parameters, mathematical equations between independent and dependent parameters were developed and the effect of the parameters was investigated. Finally, an optimum mix design, which has 60% desirability, was suggested for cold asphalt recycling.

کلیدواژه‌ها [English]

  • Cold recycled asphalt
  • Crushed asphalt
  • Response surface method
  • Design Expert software
[1] B. Golchin, M. Rabbi, Evaluation of the Technical Properties of Asphalt Mixtures Containing Reclaimed Asphalt Pavement and Sasobit, Journal of Transportation Research, 17(2) (2020) 187-198. (in Persian)
[2] M. Alikhani, R. Moayyedfar, Review and evaluation of practical methods related to hot asphalt recycling, in:  National Conference on Civil Engineering, Urban Planning and Sustainable Development, Shahid Beheshti University, 2015. (in Persian)
[3] A. Kavoosi, O. Sheikhi Karizaki, N. Solatifar, M. Jalili Ghazizadeh, Technical, economic and environmental evaluation of cold asphalt pavement recycling with bitumen foam, in:  15th Civil Students Conference Nationwide, Urmia University, 2015. (in Persian)
[4] S.F. Sajedi, M. Azhdarizadeh, Evaluation of natural zeolite effect on the mechanical properties of concrete containing coarse masonry recycled aggregates, Amirkabir Journal of Civil Engineering, 53(4) (2021) 25-25. (in Persian)
[5] S.F. Sajedi, F. Darash, Experimental Study of Workability and Mechanical Properties of Concrete Containing Powder Glass and Mineral Waste Glass with Separate and Simultaneous Applications, Amirkabir Journal of Civil Engineering, 50(6) (2019) 1155-1176. (in Persian)
[6] N. Taslimian, E. Parichehreh, F. Naghizadeh Investigation on the characteristics of RAP recycled asphalt, in:  The 3rd International Congress of Civil Engineering, Architecture and Urban Development, Shahid Beheshti University, 2016. (in Persian).
[7] A. Modarres, Investigation of the effect of cement type on the behavioral properties of recycled asphalt mixture with bitumen, PhD dissertation, Civil Engineering Department, Tarbiat Modarres University, (in Persian), 2011. (in Persian)
[8] A. Goudarzimehr, M. Ghanbari, Technical, economical and environmental evaluation of hot and cold recycled asphalt in situ with bitumen foam, in:  The first national conference on sustainable urban development, Kimia Research Group, Tehran, 2016. (in Persian).
[9] M. Mirshekarian Babaki, M.R. Keymanesh, A. Soltani Manesh, G.R. Tavakoli, Evaluation of resistance properties and moisture sensitivity of modified foamed asphalt mix with micro lime and cement, Quarterly Journal of Transportation Engineering, 10(3) (2019) 657-676. (in Persian)
[10] M. Vamegh, H. Rooholamini, S.A. Mousavi Rqabadi, Experimental Study on Effects of Using Copper Slag in Cold-in-place Recycled Asphalt Mixtures, Journal of Transportation Research, 15(4) (2018) 390-403. (in Persian)
[11] S. Yousefdoost, O. Farzaneh, A.M. Esmaeili, A. Ahmadi, Laboratory Investigation on the Resilient Modulus, Indirect Tensile Strength and Unconfined Compressive Strength of Cold In-Place Recycled Asphalt Mixes Using Foamed Bitumen, Journal of Civil and Surveying Engineering, 45(7) (2012) 803-825. (in Persian)
[12] M. Dibaj, A. Kavoosi, An Optimized Mix Design Method for Emulsified Bituminous Mixtures, Journal of Transportation Engineering, 4(1) (2012) 23-34. (in Persian)
[13] B. Moradi Bejestani, Investigation of mechanical properties of emulsified asphalt made from recycled asphalt materials and new materials, Msc Thesis, Department of Civil Engineering, Amirkabir University of Technology, (in Persian), 2009. (in Persian)
[14] P. No.339, Cold Mix Recycling General Technical Specifications, in, Ministry of Roads and Transportation, Deputy of Education, Research and Technology, 2007.
[15] A. Jabarouti, A.A. Ghofrani, Introduction of Response Surface Methodology in:  The 4th National Conference of Chemestry & Chemical Engineering, Islamic Azad University, Goochan, 2016. (in Persian).
[16] M. Murali, B.S. Mohammed, I. Abdulkadir, M. Liew, W.S. Alaloul, Utilization of Crumb Rubber and High-Volume Fly Ash in Concrete for Environmental Sustainability: RSM-Based Modeling and Optimization, Materials, 14(12) (2021) 3322.
[17] S. Ray, M. Haque, T. Ahmed, T.T. Nahin, Comparison of artificial neural network (ANN) and response surface methodology (RSM) in predicting the compressive and splitting tensile strength of concrete prepared with glass waste and tin (Sn) can fiber, Journal of King Saud University - Engineering Sciences,  (2021).
[18] A. Habibi, A.M. Ramezanianpour, M. Mahdikhani, O. Bamshad, RSM-based evaluation of mechanical and durability properties of recycled aggregate concrete containing GGBFS and silica fume, Construction and Building Materials, 270 (2021) 121431.
[19] L. Yuan, L. Li, T. Zhang, L. Chen, J. Zhao, W. Liu, L. Cheng, S. Hu, L. Yang, M. Wen, Improving soil moisture estimation by identification of NDVI thresholds optimization: An application to the Chinese Loess Plateau, Remote Sensing, 13(4) (2021) 589.
[20] H.H. Tsang, D.P. Tran, W.Y. Hung, K. Pitilakis, E.F. Gad, Performance of geotechnical seismic isolation system using rubber‐soil mixtures in centrifuge testing, Earthquake Engineering & Structural Dynamics, 50(5) (2021) 1271-1289.
[21] S. Deng, Y. Chen, A study by response surface methodology (RSM) on optimization of phosphorus adsorption with nano spherical calcium carbonate derived from waste, Water Science and Technology, 79(1) (2019) 188-197.
[22] J. Suquet, L. Godo-Pla, M. Valentí, L. Ferràndez, M. Verdaguer, M. Poch, M. Martín, H. Monclús, Assessing the effect of catchment characteristics to enhanced coagulation in drinking water treatment: RSM models and sensitivity analysis, Science of The Total Environment, 799 (2021) 149398.
[23] M.O. Hamzah, B. Golchin, D. Woodward, A quick approach for rheological evaluation of warm asphalt binders using response surface method, Journal of Civil Engineering and Management, 23(4) (2017) 475-486.
[24] N.H. Abdullah, M.O. Hamzah, B. Golchin, M.R.M. Hasan, An alternative protocol to artificially simulate short-term ageing of binders for selected regional condition, Construction and Building Materials, 161 (2018) 654-664.
[25] A. Lewis, D. Collings, Cold in place recycling: a relevant process for road rehabilitation and upgrading, in:  The 7th Conference on Asphalt Pavement Process for Southern Africa, CAPSA ‘99, 1999. (in Persian).
[26] Y. Niazi, M. Jalili Ghazizadeh, Effect of Portland Cement and Lime Additives on Permanent Deformation of Cold in-place Recycled Mixtures with Asphalt Emulsion, Journal of Transportation Research, 5(4) (2009) 373-383. (in Persian)
[27] F. Firoozei, J. Boloori Bazzaz, A. Mohammadzadeh Mogaddam, The application of cement and polypropylene fibers in cold recycled asphalt mixture by emulisified bitumen in:  The 9th International Congress on Civil Engineering, Isfahan University of Technology, Isfahan, 2013. (in Persian).
[28] S. Jain, B. Singh, Cold mix asphalt: An overview, Journal of Cleaner Production, 280 (2021) 124378.