Strength and serviceability performance of pervious concrete with bagasse ash as supplementary cementitious material and magnesite mine tailing as fine aggregate fraction

Pervious concrete pavement could be a solution to urban flooding and associated with groundwater recharge. Agricultural and mining waste can be utilized in concrete production based on its physical and chemical properties to address environmental issues. Mechanical and durability performance of pervious concrete is evaluated with various replacement levels of treated bagasse ash (TBA) as SCM and magnesite mine tailing (MMT) as fine aggregate replacement. Mechanical and durable parameters of pervious concrete enhance with 20 % TBA as SCM and 20 % MMT as fine aggregate replacement when 10 % coarse aggregate is replaced with fine aggregate. Weight and strength reduction of the optimum replacement is insignificant when compared with control pervious concrete. Sorptivity and porosity of pervious concrete were also experimented. Additionally, anexpression is prosed between the porosity and sorptivity with respect to pore structure. It is found that, the proposed relation yields good agreement with the experiments. From the results, it is noted that, the strength aspect of pervious concrete with the combination of SCM and fine aggregate replacement is performing better than the control pervious concrete even susceptible to acid attacks. It is suggested that studies may be expected on the enhanced hydraulic conductivity of pervious concrete with MMT as fine aggregate replacement and TBA as SCM.