A comprehensive model to predict acoustic absorption factor of porous mixes

Abstract The aim of this study is to define an experimental model to predict acoustic absorption properties of porous asphalt concretes (PAC) as a function of composition and volumetric characteristics of mixes. The model can be used for the mix design of PAC and it enables to individuate which composition parameters to operate on in order to obtain optimum acoustic performances of low noise porous pavements. In order to define the experimental model, a large number of asphalt concrete samples, with high void content ...