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Feasibility analysis of cement and coarse aggregates replacement in concrete with waste materials a drive towards developing green building material
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This isn't really about human health directly — it's about building materials, but it's worth knowing about because researchers found that crushed eggshells and shredded plastic water bottles can partially replace cement and gravel in concrete, creating a cheaper, greener building material that cuts down on waste and pollution. While this specific study focuses on construction (not food or water safety), it's part of a bigger trend of repurposing plastic waste — which is useful context, since so much plastic already ends up polluting our environment and breaking down into the microplastics found in our water, food, and even our bodies. The tested concrete is best suited for non-structural uses (like sid
The eggshell powder was made from discarded eggshells by simple process. The plastic aggregate was made by cutting mineral water plastic bottles into small pieces. These materials were used to halfway substitution of cement and aggregate in substantial creation in a specific rate. The created concrete was tried for slump test, density test, and compressive strength test. For the study, first, the collected eggshell was turned into powder, and plastic bottles were turned into aggregates. Then ESP was used to substitute cement by 1%, 2%, 3%, 4%, 5%, and 6% of weight to produce ESP concrete. The pairings were 4 + 2.5, 4 + 5, 3 + 2.5 and 3 + 5 %ages of ESP & Plastic concrete. These concretes were also tested for slump, density, and compressive strength. The density of ESP concrete increases up to 5% ESP substitution and then reduces, and the density for plastic substitution reduces with an additional expansion in the level of plastic. These concretes can be mainly used for the production of non-structural concrete, and are also cheaper to produce. It will also reduce the use of natural resources, lower pollution, lower carbon emissions, and also reduce the cost of waste disposal. It is indicated the workability increases whereas the density and compressive structure decreases for plastic concrete. The 28th day is much better than 7th day for all properties. The economic constrains were also discussed.
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Researchers found that mixing small amounts of shredded plastic water bottles (2-2.5%) into concrete actually made it stronger, offering a clever way to reuse plastic waste instead of sending it to landfills. While this isn't directly about human health, it matters because it could reduce plastic pollution buildup in our environment—one path toward tackling the growing problem of plastic waste that eventually breaks down into microplastics found in our water, food, and even our bodies.
Impact of using recycled plastic particles as a partial replacement of aggregates on the mechanical performance of the eco-friendly concrete
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Researchers found that mixing small amounts of recycled plastic waste into concrete (replacing sand or gravel) can create lighter, still-usable building material, best suited for things like sidewalks and paving blocks rather than load-bearing structures. 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, water, and eventually our food and bodies. However, this is a construction materials study, not a health study, so it doesn't directly test whether the concrete itself sheds microplastics over time.
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.
Waste Plastic as Partial Aggregate Replacement in Concrete: A Review of Mechanical, Durability and High-Temperature Performance
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This review pulls together existing studies on mixing shredded plastic waste into concrete instead of sand or gravel, finding that small amounts (about 5-15%) can actually make concrete stronger and more crack-resistant while helping keep plastic out of landfills and oceans. This matters for human health because reusing plastic waste this way locks it into solid concrete rather than letting it break down outdoors into microplastics that can contaminate water, soil, and eventually our food and bodies, though researchers note more testing is still needed on long-term safety and emissions before this becomes widespread practice.
Strength of Sand concrete Blocks Production Using Waste Plastic (Pet)
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This paper isn't really about human health directly, it's about testing whether recycled plastic waste can replace some of the sand used to make concrete blocks for building homes. Researchers found that replacing just 5% of the sand with shredded plastic made blocks strong enough for construction, offering a way to build more affordable housing while reducing plastic pollution and excessive sand mining. However, higher amounts of plastic weakened the blocks too much to meet safety standards, so more research is needed before this becomes widely used.
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