What is the ideal temperature range for placing concrete?

The ideal temperature range for placing concrete is between 50°F and 90°F (10°C and 32°C) because this range allows for optimal hydration of the cement particles, resulting in proper strength development and workability of the mix. At temperatures below 50°F, the curing process can slow down significantly, increasing the risk of incomplete hydration and potentially leading to cracks or weakened structure. On the other hand, temperatures above 90°F may accelerate evaporation of moisture from the surface before the concrete can properly set, which can also lead to issues such as surface cracking or a rough finish.

Maintaining this ideal temperature range ensures that the concrete can gain strength efficiently and minimizes the risk of issues related to curing and finishing, making it crucial for successful flatwork. This careful consideration of temperature helps in both achieving structural integrity and in facilitating effective finishing processes, which are vital for long-lasting concrete surfaces.