
Sustainable alternatives to conventional concrete are required due to urbanization, construction waste, andineffective water management. Although permeable concrete reduces pollutants, mitigates flooding, andreplenishes groundwater, its low mechanical strength and clogging susceptibility prevent it from being widelyused. Using the absolute volume method, this study creates nine porous concrete mixtures with differentwater/cement ratios (0.30–0.40), glass fibers (0.3–0.9%), and silica fume (2–6%). Portland cement, recycledcoarse aggregate, and superplasticizers based on polycarboxylic acid made up the mixtures, which wereassessed for compressive strength (GB/T50081-2002 at 7/28 days), permeability (CJJ/T135-2009), and porosity.While silica fume (4% dosage) improved matrix densification through pozzolanic reactivity, the water/cementratio (optimal: 0.30) was found to be the most significant element for strength using orthogonal array design,ANOVA, and range analysis.Without sacrificing hydraulic performance, glass fibers (0.6%) increased toughnessand crack resistance while maintaining pore connection to lower the danger of clogging. The optimized mixwas suited for non-load-bearing applications (e.g., park pavements, walkways) because it achieved balancedstrength, permeability, and durability (22% greater than traditional mixes). Glass fibers also served asmicro-carriers for the creation of biofilms, which allowed for the filtering of pollutants and the purifying ofrainwater. In line with sponge city and low-impact development (LID) objectives, this study shows howrecycled aggregates, silica fume, and glass fibers can work in concert to create permeable concrete that offers ahigh-value recycling pathway for construction waste while promoting green urban infrastructure
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