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• The RCA proportion (9.5 mm, 12.5 mm, 19 mm) in the mixes (PAP-1 to PAP-9) is studied. • The mix PAP-6 revealed the best stability, flow, and permeability mix. • Permeability by developed model in (PAP-1 to PAP-9) mixes showed satisfactory results. • Using the PAP's precise RCA proportion developed methodology is beneficial. This study presents an innovative approach to sustainable urban infrastructure by developing porous asphalt pavement (PAP) to mitigate urban waterlogging, a critical issue leading to accidents, economic losses, and environmental challenges in large and medium-sized cities. The study introduces a sustainable PAP solution incorporating solid waste management for enhanced water management in urban areas. This study conducted experimental investigations on nine porous asphalt mix designs (PAP-1 to PAP-9), utilizing varying proportions of 19 mm, 12.5 mm, and 9.5 mm of recycled coarse aggregate (RCA) to find an optimal mix design. The study's methodology involved assessing the flow and stability of these mixes using the Marshall Stability and Flow test, complemented by permeability evaluations through a falling head permeability test. The findings revealed that the PAP-6 mix, characterized by a 1:1:0.5 aggregate ratio, demonstrated superior performance with a stability of 9.33 kN, a minimal flow of 4.1 mm, and an effective permeability of 1490 × 10 –6 m/sec. This mix offers a balanced solution regarding aggregate fractions, flow, stability, and permeability, positioning it as a viable option for sustainable and efficient urban water management. This study contributes to the energy-efficient and environmentally friendly development of urban infrastructure by enhancing water management in urban areas, contributing to energy efficiency.
Akhtar et al. (Mon,) studied this question.