The possibility of reusing recycled aggregates in the production of hot mix asphalt
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Abstract
The use of aggregates resulting from destroying concrete as a substitute for natural aggregates in the production of hot mix asphalt for roads with high traffic loads reduces natural consumption and the amount of scattered waste. The study was conducted by designing the hot mix asphalt using the Marshall method with different proportions of recycled aggregate. The results showed an improvement in the stability, flow and indirect tensile tests of the aggregate compared to the conventional mixture. An increase in the recycle aggregate leads to an increase in the proportion of air voids, but it also leads to a decrease in the proportion of voids in the aggregate and asphalt-filled voids. The optimum bitumen content increases with the amount of recycled concrete. Recycled aggregate can be used as a substitute for natural aggregate in hot mix asphalt design successfully. The study found that increasing the percentage of recycled concrete (RCA) in hot bituminous mixtures led to an increase in air voids (VA) and a decrease in voids in mineral aggregates (VMA) and voids filled with asphalt (VFA). However, these percentages decreased with the increase in RCA due to the behavior of the recycled aggregates under load. The optimum bitumen content (OBC) also increased with the increase in RCA. The asphalt mixture's resistance to tensile stress increased with the increase in RCA up to 50% and at 25˚C and RCA 40˚C by up to 8%. The process of using recycled aggregates as an alternative to natural aggregates in hot bituminous mixtures is applicable up to a certain percentage.
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Nabil I. Al- Sarrag, Hanaa Khaleel A. Al-Baiti, Suham E. Saleh Al-Malikyand Samar Saeed Alwan. (2014). Use of recycling building demolition waste as coarse aggregate in hot mix asphalt. Tikrit Journal of Engineering Sciences, 21(1), 63-76.
Alfaqawi, R. M. (2012). Using recycled aggregate in hot asphalt mixtures in Gaza Strip, M. Sc. Thesis, University of Nottingham.
Aljassar, A. H., Al-Fadala, K. B., & Ali, M. A. (2005). Recycling building demolition waste in hot-mix asphalt concrete: a case study in Kuwait. Journal of material cycles and waste management, 7(2), 112-115.
Cho Yoon-Ho, Hun Taeyoung, Kim In. Tai, Choi Nyoung Rak. (2011). “The Application of Recycled Concrete Aggregate (RCA) for Hot Mix Asphalt (HMA) base Layer Aggregate”. KSCE J Civ Eng; 15 (3); 473-478.
S. Ektas, M. Karacasu. (2012). Use of recycled concrete in hot mix asphalt and an ANN model for prediction of resilient modulus, 21 (83) 53– 60.
Hassoon, A., & Al-Obaedi, J. (2014). The Use of Recycled Concrete as A Subbase Layer for Highways. Al-Qadisiyah Journal for Engineering Sciences, 7(3), 273-277.
Kareem, A. I. (2014). Evaluation of Recycled Cement Concrete (RCC) as Filler for Asphalt Mixture. Journal of Engineering and Sustainable Development, 18(5), 197-214.
Khalaf, F. M., & DeVenny, A. S. (2004). Recycling of demolished masonry rubble as coarse aggregate in concrete. Journal of materials in civil engineering, 16(4), 331-340.
Majeed, M. W. (2017). Effect of Adding Kaolin With Natural And Recycled Coarse Aggregates on Asphalt Mixture. Journal of Engineering and Sustainable Development (JEASD), 21(2).
Mills-Beale, J., & You, Z. (2010). The mechanical properties of asphalt mixtures with recycled concrete aggregates. Construction and Building Materials, 24(3), 230-235.
Mostafa, A. E., Ouf, M. S., & latif Jamal, A. (2015). Developing an Environmentally Sustainable Hot Mix Asphalt Using Recycled Concrete Aggregates.
Motter, J. S., Miranda, L. F. R., & Bernucci, L. L. B. (2015). Performance of hot mix asphalt concrete produced with coarse recycled concrete aggregate. Journal of Materials in Civil Engineering, 27(11), 04015030.
Pérez, I., Pasandín, A. R., & Medina, L. (2012). Hot mix asphalt using C&D waste as coarse aggregates. Materials & Design (1980-2015), 36, 840-846.
Razzaq, A. K. (2016). Possibility of utilizing recycled concrete aggregates in HMA mixture. Kufa Journal of Engineering, 7(3).
Zoorob, S. E., & Suparma, L. B. (2000). Laboratory design and investigation of the properties of continuously graded Asphaltic concrete containing recycled plastics aggregate replacement (Plastiphalt). Cement and concrete composites,22(4),233-242.
Akbulut, Huseyi̇n & Gürer, Cahit. (2007). Use of aggregates produced from marble quarry waste in asphalt pavements.Building and Environment. 42. 1921-1930. 10.1016/j.buildenv.2006.03.012.
Huang, Y., Bird, R. N., & Heidrich, O. (2007). A review of the use of recycled solid waste materials in asphalt pavements. Resources, conservation and recycling, 52(1), 58-73.