Initial setting time of concrete

i think the most important thing that you must consider is the mixture of your concrete if you have some admix on it it will affect your setting time with respect to humidity and weather. if you have ready mix concrete you can ask the supplies for the design concrete setting.

Time starts when the dry cement touches water. With "normal" portland cement concrete, you can expect at least an hour to mix, transport, place, and screed it before any initial set occurs.

But:

Heat and many other factors could accelerate that.

Best solution involves a small test batch which could be part of the total volume. Use identical ingredients and methods, mix at least a half cubic yard, and observe carefully what happens.

initial setting time is 30 min and final setting time is 10 hour. !!!