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Evaluating the structural performance of waste PET-infused interlocking units versus traditional stone masonry
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This study is not directly about microplastics — it evaluates the compressive strength and water absorption of interlocking bricks made from waste PET plastic as a partial cement replacement in construction.
This study focuses on PET waste reduction worldwide by looking at the application of these polymeric materials in the construction and building industries. An effective application of PET wastes will reduce PET pollution, especially in water bodies. Due to its rising cost, it can partially replace the conventional binder used (cement).Bricks were made in the conventional cement-sand and PET-sand, and a total of 72 cubes were produced for different mix ratios of 1:1, 1.5:1, and 2:1. Their properties like particle size analysis, water absorption, slump testing, and compressive strength were investigated and compared.The particle size analysis showed that the sand was well-graded with a Cu of 3.41 and a Cc of 1.07. The results of the water absorption test showed that, in both series and different mix ratios, the PET-sand interlocking blocks had a lower sorptivity (percentages of 2.02, 2.72, and 4.20) than the cement-sand interlocking blocks (percentages of 0.91, 2.40, and 3.31). The mixtures produced a 70 mm, 50 mm, and 80 mm slump for 1:1, 1.5:1, and 2:1, respectively.The maximum compressive strengths in cement-sand interlocking blocks were 13.89 N/mm2, 17.34 N/mm2, and 21.06 N/mm2 in the 1:1, 1.5:1, and 2:1 respectively. Although the results showed that the compressive strength of PET-sand interlocking bricks was lower than that of cement-sand interlocking bricks, it can be useful in a low-density carriage road.
More Papers Like This
Assessment of Plastic-Infused Concrete Bricks and Their Suitability for Interlocking: Mechanical, Durability, and Environmental Perspectives
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Researchers tested plastic-infused concrete bricks as a way to repurpose plastic waste in construction materials, evaluating their mechanical strength and suitability for different building applications. The study explores whether incorporating plastic waste into durable materials can reduce the plastic entering the environment as microplastics.
Recycling of Polyethylene and Polypropylene Waste to Produce Plastic Bricks
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This paper is not primarily about microplastics — it tests whether recycled PE and PP plastic pellets can replace conventional materials in construction bricks, with a focus on mechanical performance rather than pollution impacts.
The Impact of Recycled Polyethylene Terephthalate as Aggregate Replacement on Mechanical and Ecotoxicological Properties of Mortar
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Researchers tested mortar made with recycled PET plastic replacing some of the natural aggregate and found that it maintained comparable compressive strength while passing ecotoxicity tests with plants. The study suggests that incorporating recycled plastic waste into construction materials could be a viable way to reduce plastic in landfills without creating significant environmental harm.
Experimental Tests on Lightweight Cement Mortar and Concrete with Recycled Plastic Wastes
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This paper is not relevant to microplastics research — it tests the mechanical properties of cement mortar and concrete incorporating recycled plastic waste granules as aggregate substitutes, a construction materials engineering study.
Potential use of PET and PP as partial replacement of sand in structural concrete
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Researchers tested whether PET and polypropylene plastic waste could partially replace sand in structural concrete, evaluating the physical and mechanical properties of the resulting material. Using post-consumer plastic in construction is one strategy for diverting plastic from the waste stream and preventing it from breaking down into environmental microplastics.
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.