Transcription of Curing Concrete, Chapter 12 - Memphis
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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 .
ering the concrete with impervious paper or plastic sheets, or by applying membrane-forming curing compounds. Casting/curing temperature, °C (°F) 125 105 85 65 45 25 020 40 60 Age, days Compressive strength, % 28-day strength 23/23 (73/73) 32/32 (90/90) 10/10 (50/50) 23/10 (73/50) Casting/curing temperature, °C (°F) 120 100 80 60 020 40 60 ...
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