14. Curing of Concrete
The chapter delves into the critical role of curing in concrete strength and durability, emphasizing the detrimental effects of improper curing practices. It outlines the various methods of curing, detailing both traditional and modern approaches, and highlights the significance of starting curing at the right time based on environmental factors and concrete composition. Understanding these practices is essential for achieving desired concrete properties and preventing structural failures.
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What we have learnt
- Proper curing is the most economical method to enhance concrete quality.
- Initiating curing as early as possible, especially under aggressive environmental conditions, is crucial to prevent shrinkage cracks.
- Curing should be done in stages (initial, intermediate, and final) depending on the concrete's composition and its setting time.
Key Concepts
- -- Curing
- The process of maintaining adequate moisture, temperature, and time to allow the concrete to achieve its desired strength and durability.
- -- Plastic Shrinkage Cracks
- Cracks that may occur in fresh concrete due to rapid drying, especially in mixes with low water-to-cement ratios.
- -- Evaporation Reducers
- Chemicals applied to the surface of fresh concrete to reduce water evaporation, thereby minimizing drying and potential cracking.
- -- Initial Curing
- Methods employed to prevent moisture loss from concrete before the final set using techniques like fogging and covering.
- -- Final Curing
- The application of water or curing compounds to hardened concrete to maintain moisture content and promote hydration.
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