Question
Download Solution PDFWhich of the following precaution is generally followed in cold weather concreting and not in hot weather concreting?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
- Cold Weather Concreting: In cold weather concreting, the primary concern is preventing the concrete from freezing before it gains sufficient strength.
- One of the common practices is the use of an air-entraining agent.
- Air-entraining agents create tiny air bubbles within the concrete, which provides resistance against freeze-thaw cycles. This is critical in cold weather to prevent the concrete from cracking due to the expansion of water as it freezes.
- Hot Weather Concreting: In contrast, the main concerns in hot weather concreting include preventing rapid evaporation of water from the concrete mix, which can lead to cracking and reduced strength.
- Precautions such as cooling of aggregates, sprinkling formwork with cooled water, and covering the finished concrete surface with an impermeable sheet are typically followed to maintain the moisture content and control the temperature during the curing process.
Last updated on May 28, 2025
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