cementitious material Topic

Cementitious Material

Definition: pozzolans and hydraulic cements.- ACI Concrete Terminology


Cementitious materials indicate one of the principal ingredients that make up the concrete mixture. There are two types of cementitious materials: hydraulic cement and supplementary cementitious materials (SCMs). Hydraulic cements set and harden by reacting chemically with water. During the reaction, which is called hydration, heat is given off as the water-cement paste hardens and binds the aggregate particles together. Portland cement is the most common hydraulic cement. SCMs are used in conjunction with portland cement in concrete mixtures to improve the workability of fresh concrete and reduce thermal cracking in massive structures by reducing heat of hydration.

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