Enhancing Pervious Concrete for Sustainable Urban Stormwater Management: A Novel Mix Design Approach with Local Pozzolans and Polypropylene Fibers

Urbanization significantly reduces the natural permeability of land, which exacerbates issues related to surface runoff and drainage. Pervious concrete serves as a sustainable pavement solution that enhances water infiltration and helps mitigate urban flooding. This study aimed to develop and evaluate innovative mix designs that incorporate locally sourced ceramic and carbide-based pozzolans, along with polypropylene fibers. The optimal mix was identified as consisting of ۵% ceramic pozzolan, ۵% carbide pozzolan, and polypropylene fibers. This blend demonstrated exceptional properties, achieving a permeability rate of ۱۴۰,۹۴۷ mm/h, a compressive strength of ۱۴.۵ MPa, a flexural strength of ۲.۴ MPa, a porosity of ۳۴.۸%, and a density of ۱,۷۹۹ kg/m³. When compared to baseline mixes, the pozzolanic blends not only improved mechanical performance but also maintained or enhanced permeability. These results highlight the proposed mix's substantial potential for cost-effective and high-performance applications in sustainable urban drainage systems, ultimately contributing to improved stormwater management in urban settings.

کلیدواژه ها:

Pervious Concrete ، Local pozzolanic materials ، Sustainable urban drainage systems (SUDS) ، Stormwater management ، Mechanical Performance