concrete properties
are properties of concrete(strength) affected when casting is done during winter?
Yes.
As a result, engineers and contractors take (or should take) precautions to minimize the change in properties. This is why placing concrete in winter is more expensive that placing the same concrete in the fall or summer.
Concrete can freeze when it is still wet. When it does freeze , the concrete deteriorates and the compressive strength falls.
When concrete is placed in cold weather, the strength gain is slower.
Some methods that are used to minimize and prevent these problems are: hot water, accelerators, higher cement contents, covering the concrete with thermal blankets, and postponing the concrete placement till the spring. each of the items increases the cost of the concrete placement.
Cheers and good luck!
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