Curing Concrete Curing requires adequate n n n

Curing Concrete

Curing requires adequate — n n n Moisture Temperature Time If any of these factors are neglected, the desired properties will not develop Curing Concrete

Effect of Adequate Curing on Hardened Concrete Increased n Strength n Watertightness n Abrasion resistance n Freeze-thaw resistance n Volume stability Curing Concrete

Effect of Moist Curing Concrete

Effect of Curing Temperature on Strength Curing Concrete

Effect of Curing Temperature on Strength Curing Concrete

Curing Methods 1. Supply additional water with: n Ponding or immersion n Spraying or fogging n Curing Concrete Saturated wet coverings

Curing of Concrete by Supplying Water Evaporation from water surface Water supplied from external source Saturated Concrete Curing Concrete

Curing Methods 2. Seal in mixing water: n n Curing Concrete Plastic sheets Membrane-forming curing compounds

Membrane Curing of Concrete Evaporation from water surface Partially saturated Curing membrane Saturated Concrete Curing Concrete

Curing Methods 3. Strength gain is accelerated with: n Live steam n Heating coils n Curing Concrete Electrically heated forms or pads

Steam Curing Concrete

Strength vs. Steam Curing Concrete

Strength vs. Curing Temperature Curing Concrete

Sealing Compounds Curing Concrete