Influence of compaction energy on pervious concrete properties and vertical porosity distribution

Abstract Compaction is a fundamental step in pervious concrete production and affects its mechanical hydraulic properties. In this study, two mixtures were compacted with three different energies, distributed layers. The effects on porosity, strength conductivity evaluated. increase compaction energy resulted proportional reduction porosity. Increases compressive from 17 to 36% observed. However, permeability reduced proportionally, decreases of 0.2 0.4 cm/s. three-layer more homogeneous vertical distribution porosity when compared the two-layer compaction. Although aggregate/cement ratio was most influential parameter, should also be considered mixture design. While increasing enhances concrete, excessive may cause fracture coarse aggregate, reducing performance. Thus, for each an optimum can defined maximize performance concrete.