Influence of Plastic Waste Reinforcement on Compaction and Consolidation Behavior of Silty Soil
In recent decades, the amount of solid waste production has been rising. In the meantime, plastic waste is one of the major parts of urban solid waste, so, recycling plastic waste from water bottles has become a serious challenge in the whole world. The experimental program includes the study of the effect of waste plastic fibers on maximum dry density (MDD), optimum moisture content (OMC) with different sizes and contents. Also, one dimensional consolidation tests were carried out to evaluate the benefit of utilizing randomly distributed waste plastics fiber to improve the engineering behavior of a tested soils. Silty soil specimens were prepared and tested at five different percentages of plastic waste content (i.e. 0.25%, 0.50%, 0.75%, 1% and 1.25% by weight of the parent soil). The size of plastic chips used, are 4 mm, 8 mm and 12 mm long and 4 mm in width. The results show that with the addition of waste plastic fibers, the MDD and OMC and also the compressibility of soil decrease significantly.
 H. Vidal, “The Principal of Reinforced Earth,” Highway Research Record, No. 282, 1969, PP 1-16.
 T. Park, S.A. Tan, “Enhanced performance of reinforced soil walls by the inclusion of short fiber,” Geotextiles and Geomembranes, vol. 23 (4), 2005, pp. 336–348.
 M. S. Chauhan, S. Mittal, and B. Mohanty, “Performance evaluation of silty sand subgrade reinforced with fly ash and fibre,” Geotext Geomembr, vol. 26(5), 2008, pp. 429–435.
 M. Gosavi, K.A. Patil, S. Mittal, and S. Saran, “Improvement of properties of black cotton soil subgrade through reinforcement,” Journal of the Institution of Engineers (India), vol. 84, 2004, pp. 257–262.
 A.U. Ravishankar, and K.S., Raghavan, “Coir stabilized lateritic soil for pavements,” Proceedings of the Indian Geotechnical Conference, Ahmedabad, India, 2004, pp. 45–52.
 M. R. Abdi, A. Parsapajouh, and M. A, Arjoman “Effects of Random Fiber Inclusion on Consolidation, Hydraulic Conductivity, Swelling, Shrinkage Limit and Desiccation Cracking of Clays,” International Journal of Civil Engineering, Vol.6, No. 4, 2008,
 N. C. Consoli, Vendruscolo, P.D.M. Prietto, “Behavior of plate load tests on soil layers improved with cement and fiber,” J. Geotech. Geoenviron, Eng. ASCE, vol. 129, 2003, pp. 96–101.
 X. Chen, F. Xi, Y. Geng, and T. Fujita, “The potential environmental gains from recycling waste plastics: Simulation of transferring recycling and recovery technologies to Shenyang, China,” Waste Management, 2010, vol. 31(1), 2011, pp.168-179.
 G.L. Sivakumar Babu, and A.K. Vasudevan, “Seepage velocity and piping resistance of coir fiber mixed soils,” Journal of Irrigation and Drainage Engineering, ASCE, vol. 134 (4), 2008b, pp. 495–492.
 ASTM Standard D 422-63, 2003.”Standard test method for particle-size analysis of soils.
 ASTM Standard D698-07, ‘‘Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort,” 2007.
 ASTM Standard D2435-04, “Standard test methods for one-dimensional consolidation properties of soils using incremental loading,” 2004.
 R.K. Kar, and P.K. Pradhan, (2011) “Strength and Compressibility Characteristics of Randomly Distributed Fibre-Reinforced Soil,” International Journal of Geotechnical Engineering (IJGE), vol. 5(2), 2011, pp. 235-243.