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Environmental Assessment of Asphaltic Wearing Course Containing Mixed Plastic Waste in Singapore

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Kevin Jia Le Lee, Sook Fun Wong, Kelvin Yang Pin Lee, Nyok Yong Ho, Aung Lwin Moe

Summary

Researchers conducted an environmental lifecycle assessment of an asphaltic wearing course incorporating mixed plastic waste in Singapore, evaluating trade-offs between diverting plastic from landfill and potential environmental impacts across the material's lifespan. Incorporating plastic waste into durable infrastructure like roads reduces the fraction available to degrade into environmental microplastics, offering a potential pollution-reduction strategy alongside traditional recycling.

Presently, the amount of plastic waste generated globally has doubled since the early 2000s yet the recycling rate for plastic waste remains below 10%. The accumulation of mixed plastic waste in municipal solid waste streams have spurred immense interest in recycling...

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