CIRCOMP aims to develop, within the circular economy approach, different solutions for the reuse into concrete of an industrial waste consisting of a composite material, derived from a mixture of siliceous and silicate materials combined with an acrylic-based resin. The project includes the transformation of waste and its incorporation into concrete in two different forms: 1) powders/aggregates characterized by different grain size, to evaluate their partial replacement of cement or fine/coarse aggregates; 2) synthetic fibers. The project interests both companies operating in the cement and concrete production sector and companies producing and processing composite materials. The identified reuse scenarios are verified through an assessment of the chemical, physical, mechanical, and technological performance of the produced materials. Through the Life Cycle Assessment, the best reuse option also from an environmental perspective is defined, providing then an overall balance in terms of achieved mechanical performance, energy spent, social and economic impact. The study also includes an analysis of legislative constraints regarding authorization procedures for the reuse of waste materials in construction materials and their transformation into secondary production materials.