Tuladhar, Rabin, and Yin, Shi (2024) Production of recycled plastic fibers for concrete. In: Pacheco-Torgal, Fernando, Khatib, Jamal, Colangelo, Francesco, and Tuladhar, Rabin, (eds.) Reuse of Plastic Waste in Eco Efficient Concrete. Elsevier, Cambridge, MA, USA, pp. 63-82.

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Abstract

Macroplastic fibers are increasingly used in concrete as an alternative to steel mesh, enhancing postcracking resilience and shrinkage crack control. Recently, emphasis has been placed on using recycled plastic fibers, which has helped to reduce landfill waste and lower the carbon footprint associated with virgin plastic production. This paper explores various methods of producing recycled fibers from different types of plastic wastes and presents an efficient large-scale production method using industrial polypropylene waste that involves the melt-spinning and hot-drawing processes. Test results show that 100% recycled plastic fiber has slightly lower tensile strength and Young’s modulus compared to 100% virgin plastic fiber. However, both recycled and virgin plastic fiber meet the flexural strength and toughness in the round determinate panel test.

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