The construction sector is one of the most significant contributors to global environmental impact due to its high consumption of resources and production of waste. So, the use of recycled aggregates from construction and demolition waste (CDW) has emerged as a decisive strategy for reducing the sector’s ecological footprint and promoting more sustainable and responsible practices. In the Autonomous Region of the Azores (ARA), as all over Europe, the use of recycled aggregates in construction has increased in recent decades, thus contributing to the transition from a linear economy to a circular economy. In most cases, it has been found that the behaviour of recycled aggregates, both during the execution of road works, namely in backfills and unbound pavement layers, and over time, is comparable to or sometimes better than that of natural aggregates. In addition to the laboratory characterisation of the recycled aggregate produced in the ARA and used in the Rabo de Peixe variant roadworks, the aim is also to check its performance over time and after 15 years of use, thus helping to demonstrate the technical viability of using this type of aggregate.