Curing a Concrete slab

The purpose of curing is to reduce the rate of heat loss of fresly poured concrete, it continues to at least 3 days and it's recommend to be 7 days, increased thermal stresses will affect on strutural strength of concrete.

For a slab structures, tow methods may used ponding and covering by polyethylene sheets.

Ponding: this method of curing by covering the concrete with water, the main disadvantage of this method is it's consume more water need to be disposes off the site after finishing curing.

Polyethylene sheets : this method of curing is based on no evaporation can take place at top of the freshly poured concrete by covering the concrete with this sheets. One of disadvantage of this method is wind can easily blown off it so the performance of curing may be affected.

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