Either polyethylene sheeting that s at least 4mm thick or a concrete curing insulating blanket both available from diy stores are good for this task.
Curing concrete with plastic sheeting.
The curing concrete with plastic sheeting after a short spell of water curing for one or two days is sometimes beneficial.
Covering the curing concrete with plastic keeps it cleaner but there is a more important purpose behind this practice.
When plastic sheeting is used over flat surfaces such as pavements or slabs it should extend beyond the edges of the slab by a length of at least twice the thickness of the slab.
Curing concrete with plastic sheeting requires covering all exposed areas of the concrete as soon as possible without damaging the concrete finish.
It is a common misconception that concrete cures by drying out like a pie crust that hardens as it.
Sometimes concrete work is carried out in some inaccessible difficult or far off places.
Wet the concrete thoroughly and then cover it.
The drying or curing should be gradual otherwise cracking may occur.
Two common types of membrane curing are.
For this reason concrete could be effectively covered with a plastic sheet so that it seals the evaporation of water from concrete.
Water is mixed into concrete to activate the cement binding agent and as the mix dries it hardens.
A plastic polyethylene covering retains moisture in the concrete and improves temperature control.
You may have seen fresh concrete covered with plastic while it is curing.