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Waste Plastic in Road Construction, Pathway to a Sustainable Circular Economy: A Review
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This review examines existing literature on incorporating waste plastic into road construction, finding that its inclusion can improve pavement performance and durability while offering a pathway to divert non-biodegradable plastic from landfills.
Plastic waste is one among the numerous waste that is harmful to the environment and is been established to have a significant dominance among the industrial waste. A critical problem is in how to discard the waste plastic which is quite difficult because its non-biodegradability. Similarly, improving the sustainability of manufacturing industry and the overall circular economy remain a major challenge to the global economy. Thus, this study focused on the existing literatures on thedeployments of waste plastic in road construction. From the literature consulted, it was discovered that the incorporation of the waste plastics into the building materials like bitumen depends on the economical, ecological and technical requirements. However, adequate application of the waste plastics in road construction will provide roads and pavements with adequate rheological properties and reliability. Also, it will minimize the problem of dumping of waste plastics on the landfills that could pose threat to the environment. Thus, bringing a sustainable circular economy. This study provides a hub of information that will guide the government and other authorities on the need to develop policy that will guide the use of waste plastic in road construction without compromising the standard quality of road required.
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This review examines methods for incorporating waste plastic into road construction as an alternative to virgin bitumen and aggregates. Techniques like plastic-coated aggregates and plastic-modified bitumen improved road durability and weather resistance while diverting plastic from landfills. The approach offers a dual benefit of reducing plastic waste accumulation and decreasing the environmental impact of road construction.
Incorporating Waste Plastics into Pavement Materials: A Review of Opportunities, Risks, Environmental Implications, and Monitoring Strategies
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This review examines the opportunities and risks of incorporating waste plastics into pavement construction materials, critically assessing performance benefits, environmental implications including microplastic release, and future directions for sustainable integration of plastic waste in road infrastructure.
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This engineering study evaluated the use of waste plastic including LLDPE and PET as additives in asphalt pavement mixtures to improve performance. Researchers found that optimal amounts of waste plastic improved pavement durability while providing an outlet for plastic waste. The study explores plastic upcycling in road construction as a contribution to circular economy goals.
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Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.