What's the function of a thin layer of concrete covered with dirt?
Cover with plastic film to prevent moisture from evaporating.If the moisture is too fast, evaporation will affect the curing of concrete, it will cause cracking, peeling and other phenomena, affecting the strength of concrete.
Used to maintain concrete.Because cement curing needs proper moisture content, and reacts with moisture to make the hardness of concrete increase continuously.
Maintain moisture, prevent cracking, this is normal maintenance, usually after a week can be removed
