Wet the material before laying the concrete coating. This one must
be well smashed into the joints between the beams and tiles.
Concrete ratio: 50kg of cement, 18liters of thick sand, 18liters
of gravel and 18liters of water.
A REMOVING THE CAST:
On the first
three days after laying the concrete, wet throughout the cover surface.
Do not remove the mold before 28 days of the concrete laying. When
concreting ceilings do not remove the supports before the roof is
over. Check if the above floor yet to be concreted will not overload
the supports placed over the recently concreted slab.