Which environmental factor can adversely affect masonry during construction?

High temperatures and moisture fluctuations can significantly adversely affect masonry during construction due to the impact on the materials' properties and the curing process. When temperatures soar, the rate of evaporation can increase, leading to rapid drying of the mortar. This can cause the mortar to set too quickly, which may prevent proper bonding and compromise the overall structural integrity of the masonry. Additionally, fluctuations in moisture levels can lead to issues like freeze-thaw cycles that can crack and damage the mortar and blocks.

Maintaining stable conditions is essential for ensuring the masonry materials cure properly, enabling the bonds to develop effectively and enhancing long-term durability. Conversely, stable humidity conditions, consistent airflow, and controlled drying conditions are typically beneficial for masonry construction, as they help maintain optimal moisture levels and support a slower, more uniform curing process.