Pouring Concrete Walls In Hot Weather

I ve recently moved my contracting business to the south.

Pouring concrete walls in hot weather.

Concrete applications may be considered hot weather concrete at temperatures ranging from 77 to 95 degrees fahrenheit depending on the specific application. The cracks can continue to widen and propagate until the shrinkage stresses are relieved. 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. Curing concrete in hot weather.

During a pour in very hot weather try to shade the concrete from direct sunlight. 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. When pouring concrete in hot weather you must be prepared for some possible problems. During a pour water is immediately leached out of your concrete and into the surface you are pouring on top of.

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. Precautions should be planned in advance to counter the effects of high temperature well in advance of execution to counter these effects. Advice for pouring concrete in rain. Due to the temperatures during the pour shrinkage cracks can be quite deep.

Use wet coverings until final finishing can be completed or spray with an alaphatic curing compound. Hot weather concreting tips dampen your subgrade. When pouring concrete in hot weather space control joints at smaller intervals than. As well concrete that dries.

Concrete finishers here tell me that a slab poured outside on a hot day won t cure properly unless it s kept wet. Have sufficient manpower to manage the concrete when it is being poured and for the finishing process this is not a. Lightly hydrating the surface before you pour can help keep moisture in your mix during the hydration process. This deep cracking is because the concrete has little capacity to resist shrinkage stresses.

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.