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90 of the reinforced blends. Reinforcement was shown to improve the California Bearing Ratio 91 (CBR), secant modulus, resilient modulus and shear strength of the sand. Studies have been 92 undertaken on using HDPE in form of strips as reinforcement for pavement material in the 93 subbase layer (Choudhary et al. 2014) and subgrades (Choudhary et al. 2010). Test results 94 showed improvement in some of the geotechnical properties, such as bearing capacity and 95 secant modulus of the specimens reinforced by HDPE strips. Another study conducted by Jha 96 et al. (2014) showed that application of HDPE strips enhanced the bearing capacity of industrial 97 wastes in pavement applications, and in flexible pavement construction. Evidently, only a few 98 studies have been done on LDPE, and studies on HDPE have used this material, solely in form 99 of strips or fibers. 100 Demolition activities are a major factor that results in increasing stockpiles of construction and 101 demolition wastes, including Recycled Concrete Aggregate (RCA), crushed brick, recycled 102 asphalt pavement and recycled glass (Arulrajah et al. 2014; Disfani et al. 2014). Application of 103 these materials in civil engineering construction projects were carried out recently by several 104 researchers, including Arulrajah et al. (2013 a), Gómez-Soberón (2002), McKelvey et al. 105 (2002), Poon and Chan (2006), Paranavithana and Mohajerani (2006), Courard et al. (2010) 106 and Rahman et al. (2014). RCA properties are more superior to typical quarry materials when 107 used in the construction of pavement layers (Arulrajah et al. 2014). This material was selected 108 to be blended with LDPE and HDPE granules in this research. 109 The granules are raw products of plastic recycling industries, and no further procedure is done 110 to turn them into strips of fibers. The aim is to investigate the applicability of these granules in 111 pavement base/subbase applications to reduce the need for landfilling. However, since the 112 polyethylene plastic in this research is intended to be used in form of granules instead of 113 reinforcing fibers, slight degradation of RCA properties is expected. Hence, a range of 114 geotechnical tests were conducted to evaluate the mechanical properties of the blends of 4PDF Image | Stiffness Properties of Recycled Concrete Aggregate with Polyethylene Plastic Granules
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