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Multiscale Evaluation of Recycled Plastic Corrugated Panels for Sustainable Construction
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Researchers evaluated the structural performance of corrugated panels made from 100% post-consumer recycled HDPE and polypropylene for roofing and cladding applications, finding flexural strengths of 8.4 MPa (rHDPE) and 6.3 MPa (rPP) with good durability under impact and environmental loading.
The global push for sustainable building practices has intensified the search for low-carbon, recyclable alternatives to traditional roofing materials. This study investigated the structural viability of corrugated panels fabricated from 100% post-consumer recycled HDPE and PP for roofing and cladding applications under real-world loading and environmental conditions. Promising main attributes include durability, corrosion resistance, and low environmental impact. Mechanical testing revealed a flexural strength of 8.4 MPa for rHDPE and 6.3 MPa for rPP. Under impact loading, rPP retained 53% of its initial strength, while rHDPE retained 28%, as validated by drop-weight and pendulum impact tests. Vibration testing (ASTM E1876) demonstrated that rPP exhibited 18% higher longitudinal damping, whereas rHDPE outperformed in out-of-plane vibration control. XRD and SEM-EDS confirmed distinct crystalline and morphological structures responsible for the observed behavior. Findings from this investigation, supported by prototype slab testing, confirm that integrating recycled plastics facilitates the creation of durable and sustainable building envelopes for circular construction practices.
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Sustainable Development and Assessment of Low-Strength/High-Toughness Recycled Plastic Rebars for Structural Elements Under Light Loads
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Researchers manufactured full-scale rebars from recycled HDPE and polypropylene for mortar-free, light-load construction applications, testing 48 samples across three diameters and demonstrating that recycled plastic rebars can meet structural requirements while addressing plastic waste.
Potential Applications of Different Forms of Recycled Plastics as Construction Materials—A Review
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This review examined potential applications of different forms of recycled plastics (granules, powder, fiber, aggregate) as construction materials, identifying suitable recycling methodologies and construction products with performance benefits such as improved toughness and reduced weight.
Production and Testing of Mechanical Property of Roofing Sheet and Paving Block from Plastic Waste, Sawdust and Fine Sand
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This Nigerian engineering study produced and tested roofing sheets and paving blocks made from a composite of recycled HDPE and LDPE plastic waste, sawdust, and sand. Mechanical testing showed the products met basic material requirements, offering a potential use for plastic waste in construction materials.
Recycling Waste Plastics into Plastic-Bonded Sand Interlocking Blocks for Wall Construction in Developing Countries
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Researchers investigated the use of waste polyethylene mixed with sand to produce plastic-bonded interlocking blocks for wall construction in developing countries, reporting on production methods, mechanical properties including compressive strengths of approximately 15 MPa, and failure mechanisms of three block wall system designs. The plastic-bonded blocks outperformed conventional sandcrete blocks, demonstrating a viable pathway for recycling waste plastics into construction materials.
Multicriteria Decision Making Guided Optimization of Recycled HDPE Fiber Content for Sustainable Utilization in Concrete
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Researchers incorporated recycled HDPE fibers from postconsumer plastic ropes into concrete at varying dosages and applied multicriteria decision-making to optimize the blend, finding peak compressive strength at 0.4% fiber content and the greatest durability gains — including reduced water absorption and carbonation — at 0.7–0.8%.
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