Application of Bottom Ash for Pavement Binder Course

In Europe, bottom ash (BA) is used in road construction as a fill material, mainly in embankments. The use of bottom ash as an aggregate in asphalt concretes is still in the early stages. The paper describes the results of tests performed at the Polytechnic of Bari on asphalt concretes containing BA coming from ENEL Spa plants in Brindisi (Italy). Asphalt concretes made using BA mixed with local aggregates, were evaluated. In particular, a specific attempt was done in order to evaluate the applicability of this technology for the production of the binder layer in surface course.