Pouring Concrete Tips for Hot Weather
- Use proven recommendations for adjusting concrete proportions, such as water reducing agents. Set retarding admixtures, and Fly ash.
- Advanced timing and scheduling, to avoid delays between trucks. Trucks should be able to discharge immediately and adequate personnel should be available to place and finish the concrete.
- When possible, deliveries should be avoided during the hottest part of the day.
- Limit the addition of water at the job site. You should add no more than 2 to 3 gallons of water per cubic yard.
- Slabs on grade should not be placed on polyethylene sheeting. If a vapor barrier is a must then a damp bed of compactible granular fill material should be placed over the grade.
- Wind breaks and shade should be used if at all possible.
- Finish as soon as the sheen has left the surface of the concrete.