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43 Abstract 44 The growing population in the modern world has resulted in an increase in waste generation 45 and stockpiles. There have been increasing concerns on how to sustainably reuse wastes in civil 46 and geotechnical engineering applications. Two major municipal waste streams are plastic 47 wastes and Recycled Concrete Aggregates (RCA) generated by demolition activities. A 48 potential application for growing stockpiles of plastic and RCA wastes is in the construction 49 of roads, as pavement base/subbases typically demand significant quantities of construction 50 materials. In this research, RCA was blended with Low Density Polyethylene (LDPE) and High 51 Density Polyethylene (HDPE) plastics. A range of geotechnical tests such as California Bearing 52 Ratio (CBR), Unconfined Compressive Strength (UCS), and Repeated Load Triaxial (RLT) 53 tests were conducted on RCA/HDPE and RCA/LDPE blends. Comparison of CBR, UCS and 54 RLT results with those of typical quarry materials indicated that RCA/HDPE and RCA/LDPE 55 can be used sustainably in the construction of pavement base/subbase layers. RLT testing 56 results were further evaluated using resilient moduli models, to characterize the RCA/HDPE 57 and RCA/LDPE performances under simulated traffic loads. 58 59 Keywords: Stiffness, Resilient Modulus, Recycled Materials, Polyethylene Plastic, Pavement 60 Subbase, Pavement Base 61 62 63 64 2PDF Image | Stiffness Properties of Recycled Concrete Aggregate with Polyethylene Plastic Granules
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