Cement Dosage and Granular Class as Key Factors in the Properties of Pervious Concrete: A Comprehensive Study

This study explores the impact of varied cement doses (250, 275, 300, 325, and 350 kg/m) and granular classes (Dmax of 8, 10, 12.5, and 20 mm) on pervious concrete characteristics.The concrete's fresh and hardened states are examined to identify the ideal cement dosage and granular class for optimal properties.Workability in the fresh state is measured using the slump test and air content analysis.In the hardened state, performance is assessed through water permeability, porosity, density, compressive strength, and electrical resistivity tests.The research reveals that granular class Dmax significantly affects pervious concrete properties.A smaller Dmax and lower cement dosage enhance workability, while in the hardened state, a smaller Dmax combined with higher cement dosage reduces porosity and water permeability and increases mechanical strength and density.The ideal combination of cement dose and granular class varies depending on the specific property under consideration.This study emphasizes the importance of carefully selecting granular class and cement dosage to achieve desired pervious concrete qualities.These findings provide valuable insights for practitioners aiming to enhance the sustainability and resilience of urban infrastructure using pervious concrete.