Abstract
This study investigates the mechanical, hydraulic, and durability properties of pervious concrete incorporating natural fine aggregates (NFCA), recycled coarse aggregates (RCA), and synthetic fibers (polyethylene, polypropylene, and nylon). The research aims to optimize the performance of pervious concrete for sustainable urban infrastructure while maintaining adequate strength and permeability. Experimental evaluations focused on compressive strength, split tensile strength, flexural strength, impact resistance, permeability, and porosity. Results demonstrated that NFCA-based mixes improved in strength due to enhanced particle packing, while RCA-based mixes, despite challenges with adhered mortar, achieved significant strength gains with fiber reinforcement. Among the fiber types tested, nylon fibers exhibited superior performance, achieving the highest compressive strength of 23.97 MPa and impact resistance of 70.4 MPa at 20% fiber content—representing a 34.6% improvement over baseline values. The incorporation of synthetic fibers enhanced crack resistance, stress distribution, and toughness, making RCA-based pervious concrete a viable alternative to conventional concrete. Additionally, permeability values ranged between 15 mm/s and 19 mm/s, ensuring efficient stormwater infiltration while maintaining sufficient structural integrity. Predictive models such as Artificial Neural Networks (ANN), Support Vector Machines (SVM), and Multiple Linear Regression (MLR) were employed to validate experimental findings, demonstrating high accuracy in predicting mechanical properties. The study confirms that fiber-reinforced RCA-based pervious concrete is a sustainable, durable, and functional material for urban infrastructure applications, offering an eco-friendly solution for pavements, sidewalks, and stormwater management systems.