Thermodynamic properties in cement and concrete science refer to the characteristics that define the energy and equilibrium states of the material systems under various temperature and pressure conditions. These properties include heat capacity, enthalpy, entropy, and free energy. Understanding these properties is crucial for predicting how cementitious materials react to changes in temperature, which affects their curing, hydration, and long-term durability. The thermodynamic properties of concrete are largely governed by the hydration reactions of cement, where chemical bonds are broken and formed, releasing or absorbing energy.