We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Investigating the Use of Post-Consumer LDPE Waste and Stone Dust in Sustainable Concrete Composites
Summary
Researchers incorporated post-consumer LDPE plastic waste and stone dust into concrete mixes and found that these additions can maintain acceptable mechanical properties. Reusing plastic waste in construction materials diverts plastics from landfills and reduces their potential to fragment into environmental microplastics.
The construction industry is one of the largest producers of greenhouse gases and waste materials. One potential solution to reduce the environmental impact of construction is to use sustainable materials in the production of concrete. The effects of adding low-density polyethylene (LDPE) waste and stone dust on the mechanical properties of the 7-days cured composite materials adopting two independent categorical variables with five levels each, creating 25 groups were investigated. The dependent variables are compressive strength, tensile strength, flexural strength, and water absorption. The results show that increasing LDPE waste content and stone dust content improves the mechanical strength of the composite material but increases water absorption. The optimal combination of LDPE waste content and stone dust content is 30% LDPE waste and 40% stone dust, based on the highest values of compressive, tensile, and flexural strength and the lowest value of water absorption in the group. It also provides linear regression models and correlation analysis to determine the relationships between LDPE waste content and each dependent variable. On this basis, it suggests that LDPE waste can improve the mechanical properties of the composite material and its water resistance, but the optimal amount of LDPE waste depends on the type of material and application. The study concludes that incorporating LDPE waste and stone dust into composite materials can be a sustainable solution for waste management and the production of low-cost, high-performance materials.
Sign in to start a discussion.
More Papers Like This
Utilization of plastic waste as replacement of natural aggregates in sustainable concrete: effects on mechanical and durability properties
Researchers tested concrete made with recycled polyethylene and PET plastic aggregates substituted for natural sand and gravel, finding that while plastic additions reduced compressive strength and increased water permeability, they improved impact resistance and chloride resistance, with PET concrete showing no microplastic leaching.
Utilization of Plastic Waste in Concrete Pavement
Researchers investigated the use of recycled high-density polyethylene (HDPE) plastic waste as an aggregate in concrete pavement mix designs, finding that incorporation of HDPE improved mechanical performance and durability while reducing landfill waste and energy consumption in the concrete sector.
A Step towards Sustainable Concrete with Substitution of Plastic Waste in Concrete: Overview on Mechanical, Durability and Microstructure Analysis
This review evaluates the use of plastic waste as a substitute material in concrete, analyzing its effects on mechanical strength, durability, and microstructure to assess its viability as a sustainable construction approach.
Potential use of PET and PP as partial replacement of sand in structural concrete
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.
Innovative Sustainable Concrete: Fresh and Hardened Properties Incorporating Plastic Waste
This study investigated the effects of incorporating plastic waste into concrete on mechanical and durability properties, addressing the hydrophobic nature and poor interfacial adhesion of plastic as a challenge within circular economy frameworks for construction material sustainability.