Curing Concrete, Chapter 12 - Memphis

Curing is the maintenance of a satisfactory moisture con-tent and temperature in concrete for a period of time imme-diately following placing and finishing so that the desiredproperties may develop (Fig. 12-1). The need for adequatecuring of concrete cannot be overemphasized. Curing has astrong influence on the properties of hardened concrete ;proper Curing will increase durability, strength, watertight-ness, abrasion resistance, volume stability, and resistance tofreezing and thawing and deicers. Exposed slab surfacesare especially sensitive to Curing as strength developmentand freeze-thaw resistance of the top surface of a slab canbe reduced significantly when Curing is portland cement is mixed with water , a chemicalreaction called hydration takes place. The extent to whichthis reaction is completed influences the strength and dura-bility of the concrete .

concrete is important, the water used for curing by pond-ing or immersion must be free of substances that will stain or discolor the concrete. The material used for dikes may also discolor the concrete. Fogging and Sprinkling Fogging (Fig. 12-4) and sprinkling with water are excellent methods of curing when the ambient temperature is well

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