Cement, primarily Portland cement, is a fundamental component in concrete, serving as the binder that gives concrete its structural integrity. Composed mainly of calcium silicates, cements are manufactured through the high-temperature calcination of limestone and clay minerals. The hydration reaction of cement with water forms calcium silicate hydrate (C-S-H) and calcium hydroxide, which are crucial for setting and hardening, providing the mass with strength and durability. The performance of cement, particularly its reaction kinetics and the nature of its hydration products, plays a pivotal role in determining the longevity and resilience of concrete structures.