ABSTRACT
An innovative design and construction procedure has been implemented for the life cycle assessment of geo materials in highway pavement renovation. In most cases old asphalt material after demolition is considered a “waste” material and therefore it is not allowed the recycle directly as construction material. In this case a specific study has been carried out developing different items: implement an environmental testing and administration procedure in order to obtain the positive approval by local Italian authority on the “end of waste” legislation (according to the new Italian law D. 69/18); develop a large prequalifying testing procedure by sampling existing asphalt material and studying in laboratory all the mechanical and chemical transformations and performances, also by the study of cement mix add; implement a construction field procedure that makes the demolition of an existing asphalt pavement possible and locally provides a mechanical and chemical transformation in order to give new life to the material as sub foundation layer of a new highway pavement. The result of the process was successful and could show an innovative prospective in the life cycle use of asphalt and geotechnical materials in existing highway renewal process.
