Flexible pavements are a widespread method to build infrastructures in Europe and in Italy in particular. It is well known they are a multilayer system of Hot Mix Asphalt (HMA) and the lack of bearing capacity of this material can affect the service life. Therefore, in the last 10 years worldwide researches were involved in studies related to the use of different reinforcing systems, in order to build more efficient and cost-effective infrastructures, but taking into consideration the protection of the environment as well. Hence, the aim of this work is to analyze the benefits of the use of different kind of grids inserted in a multilayer flexible pavement. In fact, the consequent effects of this choice were studied in terms of service life of asphalt pavements. As a result these advantages were translated not only in a saving of money, but also in an improvement of the quality of performances. Moreover, the reinforces were placed in the pavements in a "superficial position" and subsequently that means it would be possible to adopt this building technique in pre-existing infrastructures, in order to improve the performances and to extend the service life of weak asphalt pavements. Furthermore, the objective of this work was reached arranging a laboratory survey using real scale samples. In fact, 3-point bending tests were carried out using different specimens with and without reinforces, in order to underline and analyze the dissimilarities between these two different scenarios.
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