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A Life Cycle Assessment of HDPE Plastic Milk Bottle Waste Within Concrete Composites and Their Potential in Residential Building and Construction Applications
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This study evaluated using recycled HDPE plastic milk bottles as an ingredient in concrete for residential construction, analyzing the full environmental impact from production through disposal. While incorporating plastic waste into concrete can divert it from landfills, the research found trade-offs in material strength and environmental performance. The approach could help reduce the amount of plastic waste that eventually breaks down into microplastics in the environment.
Plastic waste management remains a significant global challenge, with limited recycling opportunities contributing to its status as one of the highest waste producers. In Australia, the recovery rate for plastic waste is 12.5%, resulting in a high percentage of plastics being landfilled. Common disposal methods, such as incineration and landfilling, are environmentally damaging, with incineration emitting harmful gases and landfilling causing contamination. Recycling, while preferable, faces difficulties due to contamination and infrastructure challenges. However, alternative solutions, such as integrating waste plastic into concrete, present an opportunity to both reduce plastic waste and enhance the economic value of recycled materials. This study evaluates the potential of waste plastic milk bottles (PMBs) in residential concrete by assessing their mechanical strength, environmental impact, and variability in greenhouse gas (GHG) emissions. This study demonstrated that replacing up to 10% of cement with silica fume-modified plastic milk bottle (SFPMB) waste granules maintained comparable compressive strength to traditional concrete. The addition of metakaolin to the SFPMB mix design (SFMKPMB) further improved the material’s strength by 28%. Life cycle assessment (LCA) results revealed reductions in global warming potential (GWP), human toxicity potential (HTP), and fossil depletion potential (FDP), with SFMKPMB showing the greatest environmental savings. A Monte Carlo simulation evaluated variability factors, revealing that additional transportation and energy requirements increased GHG emissions, though the SFMKPMB mix ultimately resulted in the lowest overall material GHG emissions. This study demonstrates the complexity of assessing “green” materials and highlights how material variability and energy use can influence the sustainability of waste-derived composites. Despite challenges, incorporating waste plastics into concrete offers a promising strategy for mitigating landfill waste and reducing environmental impacts, especially as renewable energy adoption increases.
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An Experimental Study on Performance of HDPE Plastic in Concrete Boundary Wall
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Researchers found that mixing recycled plastic waste (HDPE, the type used in milk jugs and detergent bottles) into concrete for boundary walls can actually make it stronger, with the best results coming from adding about 5% plastic by weight. This matters because it offers a practical way to reuse plastic waste instead of sending it to landfills or letting it break down into microplastics that pollute soil and water—turning a pollution problem into a useful building material.
Use of Plastic Waste in Concrete : A Comprehensive Review on Strength of Concrete Mixture with Different Material
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This review paper looks at how recycled plastic waste (like PET bottles) can be mixed into concrete for building construction, finding that the right amount can actually improve certain properties while reducing landfill waste. This matters because it offers a practical way to reuse plastic that would otherwise pollute the environment—though the paper focuses on construction benefits rather than directly studying whether this affects microplastic exposure or human health, so more research would be needed to confirm concrete made this way doesn't shed plastic particles over time.
Sustainable Concrete Development Using the Plastic Bottle Waste
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Researchers outline how polyethylene plastic bottle waste can be repurposed as a construction material, framing the approach as a means to address the dual problems of non-biodegradable waste accumulation and rising demand for conventional building aggregates.
Use of Plastic Waste in Concrete : A Comprehensive Review on Strength of Concrete Mixture with Different Material
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This review paper looks at how recycled plastic waste (like plastic bottles) can be mixed into concrete for building construction, finding that small amounts can actually make concrete stronger and lighter while keeping plastic out of landfills. This matters for human health because reducing plastic waste means less of it breaking down into microplastics that end up in our soil, water, and eventually our bodies — though more research is needed to confirm plastic-infused concrete is safe and durable long-term before it's widely used.
Environmental and Cost Advantages of Using Polyethylene Terephthalate Fibre Reinforced Concrete with Fly Ash as a Partial Cement Replacement
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This study examined the environmental and cost benefits of using recycled PET plastic bottles as fiber reinforcement in concrete, combined with fly ash as a partial cement replacement. Repurposing plastic waste in construction materials could help reduce the volume of plastic entering the environment as microplastics.
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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.