This section will define the mechanical properties of concrete, such as compressive strength, tensile strength, elasticity, and ductility. It will explore the mechanisms through which these properties are developed in concrete, focusing on the role of the material composition (cement, aggregates, water, and admixtures), the hydration process, and the microstructural interactions between cement paste and aggregates. The influence of curing conditions on the development of these mechanical properties will also be discussed.