Cement and Admixtures - Theory & Concepts - Cement Hydration

Types of Portland cement, their uses, and the role of chemical admixtures.

Observe the rapid early hydration of $C_3A$ and $C_3S$ compared to the slow, long-term hydration of $C_2S$ .

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Note:

C_3S

and

C_3A

hydrate rapidly, contributing to the concrete's early-age strength and initial heat of hydration.

C_2S

reacts much slower, providing sustained long-term strength development extending well beyond 28 days.

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