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Plastic wastes are everywhere in today’s lifestyle and are growing rapidly specially in a developing country like Egypt. As these are non-biodegradable, there is a main issue facing the community concerning the handling of this plastic rubbish. On the other hand, different forms of increased distresses in flexible pavements such as cracking and rutting as well as moisture damage ratio should be faced and reduced by modifying the performance of hot asphalt mixtures. The reclaimed plastics that originally made of polymers have been used as an anti-stripping modifier to reduce the appearance of distresses in asphalt pavement surface and increase the resistance against moisture damage. In this research, the recycled plastic wastes have been used according to dry mixing process using contents (0.0, 2.0, 3.0, 4.0 and 5%) from the total weight of hot asphalt mixture. The optimal bitumen content has been derived for each polymer content by using Marshall procedure. The performance of modified bitumen mixtures have been recognized using Marshall quotient (as indicator of the stiffness), static indirect tensile strength and tensile strength ratio (as indicator of moisture damage resistance), dynamic modulus value (as indicator of stiffness of the asphalt mixture when tested in a compressive and repeated load test under different temperatures) and flow number (as indicator of permanent axial deformation resistance). The results obtained that the addendum of plastic rubbish to HMA improves its characteristics such as stability, strength, resistance to moisture damage and permanent deformation. The addition ratio of 3% polymer provides better pavement performance. Moreover, it has an economic importance where it reduces the exhaustion of natural asphalt in paving works by about 14.5%.
 M. Mohanty, “A study on use of waste polyethylene in bituminous paving mixes,” Ph.D. dissertation, National Institute of Technology, 2013.
 S. A. Taih, “The effect of additives in hot asphalt mixtures,” Journal of Engineering and Development, vol. 15, no. 3, pp. 132–151, 2011.
 D. Walker, “The benefits of modified asphalt,” Asphalt Institute, vol. 29, no. 1, pp. 13–19, 2014.
 G. Pandi, S. Raghav, D. Tamil, and K. Udhaya, “Utilization of plastic waste in construction of roads,” International Journal of Engineering Science and Computing, vol. 7, no. 3, pp. 5804– 5806, 2017.
 Plastics Europe AISBL, “World plastic production 1950–2015,” Plastics Europe AISBL, Flemish Braban, Belgium, 2019.
 S. Thiagamani, S. Krishnasamy, and S. Siengchin, “Challenges of biodegradable polymers: An environmental perspective,” Applied Science and Engineering Progress, vol. 12, no. 3, pp. 149, 2019, doi: 10.14416/j.asep.2019.03.002.
 Plastics Europe AISBL, “Plastic – the facts 2018,” Plastics Europe AISBL, Flemish Braban, Belgium, 2019.
 R. Hannah and R. Max, “Plastic pollution,” 2018. [Online]. Available: https://ourworldindata.org/ plastic-pollution
 R. Harth, “Health and environment: A closer look at plastics,” 2013. [Online]. Available: https:// www.sciencedaily.com/releases/2013/01/ 130123133928.htm
 Wikipedia for Free Encyclopedia, “Waste management in Egypt,” 2020. [Online]. Available:https://en.wikipedia.org/wiki/Waste_ management_in_Egypt
 K. El-Refaie, “The use of sustainable plastics in Egypt,” Department of Chemistry, Tanta University, Egypt, 2017.
 A. Aslam and S. Rahman, “Use of waste plastic in construction of flexible pavement,” New Building Materials and Construction World, New Delhi, India, 2009.
 M. Buncher, “Evaluating the effects of the wet and dry processes for including crumb rubber modifier in hot mix asphalt,” Ph.D. dissertation, Air Force Institute of Technology, OH, USA, 1995.
 A. Silvia, C. Marina, B. Manuel, and O. Fernando, “Green pavements: Reuse of plastic waste in asphalt mixtures,” Materials and Structures, vol. 49, no. 5, pp. 1655–1665, 2016.
 M. Dalen, S. Mador, and J. Oyewola, “Utilization of plastic wastes in asphalt design for road construction,” British Journal of Applied Science and Technology, vol. 19, no. 3, pp. 1–7, 2017.
 C. Bindu and K. Beena, “Waste plastic as a stabilizing additive in stone mastic asphalt,” International Journal of Technology and Engineering, vol. 2, no. 6, pp. 379–387, 2010.
 I. Mohamed, M. Ahmed, F. Mahmoud, and M. Eslam, “Effect of using polymers on bituminous mixtures characteristics in Egypt,” IOSR Journal of Mechanical and Civil Engineering, vol. 11, no. 4, pp. 54–63, 2014.
 B. Taher, R. Mohamed, and S. Mehrtash, “Utilization of waste plastic bottles in asphalt mixture,” Journal of Engineering Science and Technology, vol. 8, no. 3, pp. 264–271, 2013.
 ECP, “The egyptian code for the design and implementation of urban and rural roads works,” National Center for Housing and Building Research, Egypt, 2019.
 Standard Practice for Preparation of Asphalt Mixture Specimens Using Marshall Apparatus, ASTM D6926, 2010.
 Standard Test Method for Indirect Tensile (IDT) Strength of Bituminous Mixture, ASTM D6931, 2012.
 Standard Method of Test for Resistance of Compacted Asphalt Mixtures to Moisture Induced Damage, AASHTO T283, 2014.
 Standard Method of Test for Determining Dynamic Modulus of Hot Mix Asphalt (HMA), AASHTO TP62, 2007.
 Guide for Mechanistic-Empirical design of new and rehabilitated pavement structures, National Cooperative Highway Research Program, Washington DC, USA, 2004.