Abstract
Hydration is a process of cement hardening in presence of water which explains the development of the microstructure of the cementitious material. During the process of hydration, the fluid suspension is transformed into a rigid solid form. This paper provides a comprehensive review on hydration characteristics blended types of cement produced during the blending of various supplementary cementitious materials (SCMs) like fly ash, ground granulated blast furnace slag, limestone powder, rice husk ash, palm oil fuel ash, and red mud. Different techniques such as isothermal calorimetry, X-ray diffraction (XRD) and thermogravimetric (TG), scanning electron microscopy (SEM), Fourier Transform Infrared spectroscopy (FTIR) were mainly used by past literatures to study the hydration characteristics of cement paste. Chemical compositions and physical properties of blended cement prepared using SCMs are reviewed and compared. The findings showed that chemical compositions and physical properties along with temperature greatly affect the hydration characteristics of cement and supplementary cementitious materials addition in concrete production can influence the properties of concrete like rate of hydration, strength, durability, workability etc.KeywordsHeat of hydrationCementitious materialsFly ashScanning electron microscopyFourier transform infrared spectroscopy
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