Utilizing recycled construction and demolition waste in permeable pavements for sustainable urban infrastructure

Urbanization and the growing accumulation of construction and demolition (C&D) waste present significant challenges in civil engineering. Permeable pavements, which facilitate water infiltration and reduce surface runoff, offer an effective solution to these issues. When constructed with recycled C&D materials such as recycled concrete, reclaimed asphalt, and crushed bricks, these pavements not only help mitigate environmental impacts but also contribute to solving the problem of C&D waste disposal. Studies indicate that the durability, safety, and performance of permeable pavements made from recycled materials are influenced by factors like material composition and treatment methods. Research has shown that chemical stabilization and other techniques can improve the strength and water resistance of recycled materials, making them viable alternatives to traditional pavements. However, challenges like pore clogging and variations in material composition need to be addressed to ensure the long-term performance of these pavements. Safety concerns, particularly regarding the structural strength of pavements under heavy vehicle traffic, also need to be considered. The use of C&D waste in permeable pavements supports the circular economy by recycling materials that would otherwise be discarded. This approach reduces the need for new raw materials and helps mitigate the environmental impact of construction waste. Further studies on the performance, durability, and safety of these pavements will be essential to optimizing their use in large-scale urban projects. The integration of permeable pavements made from recycled materials could be a key component in the development of more sustainable and resilient urban infrastructure.