What is a primary risk associated with high curing temperatures?

High curing temperatures can lead to a primary risk of moisture loss, significantly affecting the strength development of concrete. When the temperature rises, the rate of evaporation increases, which can lead to a scenario where the concrete loses moisture too quickly. Adequate moisture is essential during the curing process because it facilitates the hydration of cement, which is critical for achieving the intended compressive strength and durability.

If moisture evaporates faster than it is replenished, it may result in incomplete hydration of the cement particles, leading to a weaker concrete structure. This issue can manifest as surface cracking, reduced strength, and overall compromised integrity of the concrete.

In contrast, while rapid hardening can occur at high temperatures, it is not primarily considered a risk compared to the loss of moisture. Moreover, increased workability and enhanced bonding with foundations are generally not associated with the downsides of high curing temperatures. Understanding these dynamics is essential for any concrete finisher to ensure that the curing process maintains optimal conditions for producing durable and high-quality concrete.