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Discussion: Effects of Plastic Waste Materials on Geotechnical Properties of Clayey Soil [DOI: 10.1007/s40515-020-00145-4]

Transportation Infrastructure Geotechnology 2022 4 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 30 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Brendan C. O’Kelly Brendan C. O’Kelly Brendan C. O’Kelly Brendan C. O’Kelly Brendan C. O’Kelly Amin Soltani, Brendan C. O’Kelly Amin Soltani, Brendan C. O’Kelly Brendan C. O’Kelly Brendan C. O’Kelly

Summary

This technical discussion evaluates a study that tested shredded plastic bottle and woven polypropylene bag fibers as soil additives, finding they improved the strength and load-bearing capacity of clay soil for road construction. While the engineering results are promising, the commentary highlights unresolved questions about the long-term ecological risks of embedding plastic waste directly into soil.

The paper under discussion (by Hassan et al. ( These fibers were prepared by cutting into two sizes waste PET water bottles and woven PP bags, each in fiber lengths of 1.0 and 2.0 cm, and in widths of 2.5-3.0 mm. While stated in the Abstract of their paper that "it is important to find methods to manage these waste materials without causing any ecological hazards , " based on the authors' experimental bench-scale investigation, they concluded that the described PET and PP fibers can be efficiently used to improve the physical and strength properties of soil materials as foundations for engineering projects, including improvement of the CBR and resilient modulus of clayey subgrade soils for sustainable road construction.

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