Effects of hot weather on concrete:

i. Due to hot weather, concrete shows rapid rate of hardening, which results difficulty in transportation of concrete.

ii. Water from concrete mix gets evaporated fastly, which results on w/c ratio and less workability of concrete.

iii. Water may get absorbed by formwork, aggregate or ground due to excessive heat.

iv. More shrinkage cracks get developed on concrete surface due to incomplete hydration with less water in concrete. Hence, early finishing becomes more essential.

v. Continuous curing is required to keep humidity and to avoid further development of cracks.

vi. Air entrained in concrete may get expelled due to temperature, hence workability may reduce additionally.