ABSTRACT

The present study investigated on the effects of compaction energy on functional and mechanical

1 INTRODUCTION

Pervious concrete consists of coarse aggregate in a gap-graded size distribution curve, cement, water, and eventually admixtures. The limited presence of fine aggregate creates a particular structure of interconnected voids that allows water to percolate within the concrete matrix. Void content typically ranges between 15% and 35% of the concrete total volume depending upon the strength and permeability requirements of each particular application (Yang et al. 2003, Delatte et al. 2009, ACI Committee 522 2010). The high void content guarantees the notable drainability features. A viscous cement paste (cement, water, and admixtures) is then used to prevent segregation and to bond the aggregates; water/cement ratio usually ranges between 0.2-0.4, while cement/aggregate ratio is usually 0.18-0.23 (Haselbach et al., 2011).