Technical Questions

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Factors affecting time of setting

Q. What are the major factors affecting time of setting?


A. The major factors affecting the time of setting are cement composition, water-cementitious material ratio (w/cm), temperature, and admixtures. When cement hydrates faster, the time of setting is reduced. Increases in the w/cm result in increased time of setting. Time of setting decreases as the temperature is increased. Admixtures may increase or decrease the time of setting depending on the type.


References: SP-1(02); E3-13; E4-12

Topics in Concrete: Admixture; Cementitious Material; Concrete Fundamentals; Cold Weather; Hot Weather

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