1. Curing Concrete

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

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

4. Curing Concrete Effect of Moist Curing

5. Curing Concrete Effect of Curing Temperature on Strength

6. Curing Concrete Effect of Curing Temperature on Strength

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

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

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

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

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

12. Curing Concrete Steam Curing

13. Curing Concrete Strength vs. Steam Curing

14. Curing Concrete Strength vs. Curing Temperature

15. Curing Concrete Sealing Compounds