STUDYING THE SUSTAINABLE APPLICATION OF WASTE POLYSTYRENE AND WATER SACHET IN HOT MIX ASPHALTIC CONCRETE
Abstract
This paper looked at how including waste polystyrene and water sachet to hot mix asphaltic concrete affected performance and sustainability. Hot bitumen mix was produced by weighing 60/70 penetration grade bitumen into 10 containers before heating. The study then generated unaltered hot bitumen mixes. Adding waste polystyrene and water sachet at 2–18% at 2% intervals changed the hot bitumen mix samples. The laboratory evaluated bitumen, aggregates, unmodified and modified hot mix asphaltic concrete. Tests included penetration, softening point, ductility, flash and fire point, sieve analysis, aggregate crushing, impact, flakiness, elongation, and Marshall stability. The mix design to meet requirements employed waste polystyrene and water sachet modifications from 0% to 20% by weight of bitumen. The study discovered that hot mix asphaltic concrete's performance was enhanced by adding waste polystyrene and water sachet. Waste polystyrene and water sachet content enhanced the Marshall stability of asphaltic concrete, reaching at 12% with 26.9 kN, better than the control mix. Indicating good workability, the flow measurements were 8–18 mm with optimal flow at 12% polystyrene. The revised mix demonstrated lower load deformation and greater Marshall stability, suggesting improved rutting resistance. Air and mineral aggregate voids were up to standard. Under traffic stresses, the Marshall quotient—which gauges flow stability—also got better. Stability, rutting resistance, and shear deformation resistance were all enhanced by adding 12% waste polystyrene to asphaltic concrete. This research proposes a sustainable alternative for increasing engineering features of hot mix asphaltic concrete while addressing waste management challenges
KEYWORDS: Waste Polystyrene, Waste Water Sachet, Bitumen, Hot Mix Asphaltic Concrete, Marshall Stability
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