DEVELOPMENT OF DURABLE POROUS ASPHALT MIXES FROM LABORATORY EXPERIMENTS

The prevalence of porous asphalt pavements is usually limited by an estimated 7-year service life. The full environmental effect of the noise reducing potential can only be exploited if the durability of the mix is improved. The aim of this project was to design a porous pavement which has a better durability than a reference pavement carried out on Oester Soegade in Copenhagen, evaluated only by tests of laboratory produced materials. The experimental research was organised in two parts; designing and testing of asphalt mixes and optimisation of the bituminous mortar. The results indicate that the best durability is obtained using slightly reduced voids content in the mix and a highly modified SBS binder developed from a soft virgin binder. Though field tests are required, the research is concluded by an estimated improvement of the durability of 1.5-2 years. For the covering abstract see ITRD E121480.