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Incorporation of Poly (Ethylene Terephthalate)/Polyethylene Residue Powder in Obtaining Sealing Concrete Blocks
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This study evaluated powdered PET and polyethylene residues from food packaging manufacturing as partial sand replacements in concrete masonry blocks, finding that a 10% substitution level provided optimal compressive strength while meeting Brazilian standards for non-structural applications.
Polymer residues can be reused in civil construction by partially replacing mineral aggregates in concrete, thereby reducing the extraction of natural resources. This study aimed to evaluate the use of powdered poly (ethylene terephthalate) (PET) and polyethylene (PE) residues, accumulated in shaving-mill filters during the extrusion of multilayer films used in food packaging, in the production of sealing masonry blocks. The PET/PE residues were characterized by Fourier Transform Infrared Spectroscopy (FTIR), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). Cylindrical specimens were produced in which part of the sand, by volume, was replaced with 10, 20, 30, 40 and 50% polymer residue. The cylindrical specimens were evaluated for specific mass, water absorption and axial and diametral compressive strengths. The 10% content provided the highest compressive strength. This formulation was selected for the manufacture of concrete blocks, which were evaluated and compared with the specifications of ABNT NBR 6136:2014. The concrete blocks showed potential for applications without structural function and were classified as Class C. The results, in line with previous investigations on the incorporation of plastic waste in concrete, underscore the promising application potential of this strategy.
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Pervious Pavement Blocks Made from Recycled Polyethylene Terephthalate (PET): Fabrication and Engineering Properties
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Researchers developed and tested pervious pavement blocks made from recycled PET plastic waste, finding they met engineering standards for strength and permeability. The study offers a dual benefit: diverting plastic waste from landfills while creating functional construction materials that help manage urban stormwater.
Assessment of Concrete Hollow Blocks Incorporating Polyethylene Terephthalate (PRT) and Copper Slag as a Commercial Concrete Alternative
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Researchers assessed the structural performance of concrete hollow blocks incorporating polyethylene terephthalate (PET) waste and copper slag as partial replacements for conventional materials, evaluating durability and sustainability metrics. The study demonstrates that PET-inclusive concrete composites can meet performance standards while diverting plastic waste from landfills.
Plastic Waste-Based Paving Blocks: Towards A Sustainable Circular Construction Material
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Researchers tested four plastic-to-sand ratios for producing paving blocks from blended PET, PP, and LDPE waste, finding that a 75% plastic mix delivered the highest compressive strength at 11.64 MPa while pure plastic blocks offered the best water resistance and abrasion performance.
Polyethylene Terephthalate Waste Utilisation for Production of Low Thermal Conductivity Cement Sand Bricks
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This engineering study tested whether shredded PET plastic waste could partially replace sand in cement bricks, finding it reduced the bricks' thermal conductivity while maintaining acceptable strength. Incorporating plastic waste into construction materials could divert it from landfills while reducing building energy costs. This paper focuses on construction materials and is not directly related to microplastic health risks.
Waste Polyethylene Terephthalate (PET) as a Partial Replacement of Aggregates in Sustainable Concrete
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Researchers tested waste PET plastic as a partial aggregate substitute in concrete, finding that up to 10% PET incorporation maintains acceptable compressive strength per ASTM standards, offering a potential pathway to divert non-biodegradable plastic waste into low-load-bearing construction materials.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.