Pouring Concrete Walls In Hot Weather

Concrete finishers here tell me that a slab poured outside on a hot day won t cure properly unless it s kept wet.

Pouring concrete walls in hot weather.

When pouring concrete in hot weather you must be prepared for some possible problems. Concrete applications may be considered hot weather concrete at temperatures ranging from 77 to 95 degrees fahrenheit depending on the specific application. If possible avoid pouring concrete at noon or during peak times for hot air temperature. I ve recently moved my contracting business to the south.

Use wet coverings until final finishing can be completed or spray with an alaphatic curing compound. During a pour water is immediately leached out of your concrete and into the surface you are pouring on top of. They do this by having someone periodically spray it with water from a hose or by setting up a lawn sprinkler once the concrete has set. When pouring concrete in hot weather space control joints at smaller intervals than.

Due to the temperatures during the pour shrinkage cracks can be quite deep. Curing concrete in hot weather. Despite modern weather forecasting technology and radar maps an unexpected rain shower can develop without warning especially during the wettest months of the year see these guidelines for placing concrete by region and season. As well concrete that dries.

Hot weather concreting tips dampen your subgrade. Here are some tips for preventing and troubleshooting rain damaged concrete. Advice for pouring concrete in rain. This deep cracking is because the concrete has little capacity to resist shrinkage stresses.

Precautions may include use of materials with a good performance history in high temperature conditions cool concrete materials or concrete mixture provide concrete consistency and placement. On a hot day freshly mixed concrete can start to set in as little as 30 minutes so you have to work quickly to get the concrete poured and finished before it hardens. Five to fifteen seconds of vibration depending on the depth of the concrete should give the desired compaction. Precautions should be planned in advance to counter the effects of high temperature well in advance of execution to counter these effects.

The cracks can continue to widen and propagate until the shrinkage stresses are relieved.