Permeability–porosity relationships for four gradations of pervious
concrete were established using uniform porosity specimens,
that is specimens that do not have a permeability distribution. The
concepts of pore size and connectivity, which have been shown to
be important to the permeability of a pervious concrete pavement
[6], were incorporated into the approximated relationship given by
Eq. (17). The relationships and pre-factors presented here are only
valid for the mixtures evaluated in this study. Further work would
need to be completed to establish standard permeability–porosity
relationships for other gradations or variations of design parameters
such as cement content and water-to-cement ratio.