This chapter examines the mechanical behavior of RAC through constitutive relationships that define its compressive strength, tensile strength, elastic modulus, and stress-strain behavior. Key variables such as RA quality, content, and production methods are assessed. Predictive equations, modified from Eurocode standards, are validated with regression models. The chapter provides insights into RAC’s time-dependent properties and its response under both tension and compression, enabling accurate modeling for structural applications. It confirms RAC's viability as a structural material when designed with attention to its distinct characteristics.