Mechanical Properties of Pervious Concrete Containing Supplementary Cementitious Materials

The pervious concrete, a type of concrete made without fine aggregates or with minimum amount of fine aggregates, require deliberated caution for the production process. Having the ability to pass water through itself, pervious concrete is usually having lower strengths than the conventional concretes. Comparatively lower strength of pervious concrete has always prompted researchers to incorporate different types of materials in pervious concretes to enhance the performance. This paper will suggest the possible supplementary cementitious materials which can be used to enhance the mechanical properties of pervious concrete. Incorporation of Silica Fume (SF) and Metakaolin (MK) from 5–10% has been done in the binder mix of pervious concrete mixes. Percentage of Viscosity Modified Agent (VMA) and w/c ratio, both, have both been kept constant for all the mix combinations tested. Compressive strength, split tensile strength, flexural strength, and ultrasonic pulse velocity of pervious concrete mixes have been tested. Correlations between the properties tested have also been established. The optimum mix combination out of all pervious concrete mixes tested has also been tried to obtain. This study has conveniently established an environment friendly sustainable pervious concrete product incorporating alternatives of Portland Cement (PC) and having sufficient amount of strength for pedestrian walkways and parking lots.