The Influence of Various Materials to the Void Ratio of Pervious Concrete

Abstract

Pervious concrete is an alternative to reduce surface runoff in urban areas. To examine effect of different materials on the void ratio of pervious concrete is studied in order to evaluate the efficiency of pervious concrete solving surface runoff problems. Various materials have been used in mix proportion of pervious concrete. Different size of aggregate, the use of supplementary material for cement, recycled aggregate as an alternative to replacing natural coarse aggregate, and fiber usage were utilized in a series of experiment to evaluate the value of void ratio that greatly affects the effectiveness of pervious concrete to cope surface runoff in urban areas. The result shows that the size of aggregate strongly affected the void ratio of pervious concrete, while the effect of the use of supplementary material for cement in pervious concrete to its void ratio was not significant. However, pervious concrete made of recycled aggregate proved to have a higher void ratio compared to pervious concrete using natural coarse aggregate. When utilizing fiber in mix proportion of pervious concrete, the higher rate of fiber reduced its void ratio.