Development of Sustainable Paver Blocks using HDPE Plastic, Quarry Dust and Flyash

The rapid growth of urbanization and industrialization has increased the demand for construction materials while simultaneously posing environmental challenges related to the disposal of industrial and plastic waste. This study focuses on the development of sustainable interlocking paver blocks by incorporating HDPE plastic, fly ash and quarry dust as alternatives to conventional cement and aggregates. In this approach, fly ash and quarry dust act as partial replacements for cement and natural sand, contributing to a more sustainable material mix. The proposed paver blocks not only offer effective waste management but also demonstrate adequate strength and durability for pedestrian and light-traffic areas. Additionally, the utilization of HDPE plastic, fly ash, and quarry dust helps reduce carbon footprint, minimize landfill waste, and decrease dependence on natural resources. Overall, this study presents an innovative, cost-effective, and sustainable solution that aligns with the principles of green construction and a circular economy. Rapid urbanization and industrial development have significantly increased the consumption of conventional construction materials, leading to excessive exploitation of natural resources and the accumulation of industrial and plastic waste. Addressing these environmental concerns requires sustainable alternatives that promote resource efficiency and waste utilization. This study investigates the development of eco-friendly interlocking paver blocks incorporating High-Density Polyethylene (HDPE) plastic, fly ash, and quarry dust as partial or alternative materials to conventional cement and natural aggregates. HDPE plastic is utilized as a binding component, while fly ash and quarry dust serve as supplementary materials to enhance mechanical performance and sustainability. An experimental investigation was conducted to evaluate the physical and mechanical properties of the developed paver blocks, including compressive strength, durability characteristics, and water absorption behaviour. The results indicate that the proposed mix demonstrates satisfactory strength suitable for pedestrian walkways and light-traffic applications. Furthermore, the inclusion of HDPE significantly reduces water absorption, improving durability and resistance to environmental degradation. The use of fly ash and quarry dust contributes to improved particle packing density and reduced dependency on natural river sand and cement. The developed paver blocks offer multiple environmental benefits, including reduction in carbon emissions, minimization of landfill waste, and conservation of natural resources. In addition, the proposed system provides a cost-effective and sustainable construction alternative aligned with the principles of green building and circular economy practices. This research highlights the potential of integrating industrial by-products and plastic waste into value-added construction materials, thereby contributing to sustainable infrastructure development.