How does temperature influence the hydration of concrete?

Temperature plays a critical role in the hydration process of concrete, which significantly influences its strength, durability, and overall performance. Higher temperatures increase the rate of chemical reactions occurring during hydration, which in turn speeds up the curing process. This acceleration often results in concrete reaching its strength in a shorter time frame.

However, while higher temperatures can enhance hydration rates, they also pose challenges, such as increased evaporation rates of moisture from the surface of the concrete. Rapid drying can lead to issues like cracking, reduced tensile strength, and compromised durability. Proper curing methods must be employed to mitigate the effects of temperature fluctuations, especially in hot weather, to ensure that the concrete does not dry out too quickly and properly continues its hydration.

Thus, the choice that states higher temperatures accelerate hydration but can lead to rapid drying accurately captures the dual influence of temperature on this critical process in concrete finishing.