The traditional sand and cement screeds use material produced directly on site by mixing sand, cement and water. The mix can be made with manual systems, rather than automatic (silos and mixers), the equipment can also be mounted on trucks that serve both as a means of transport and as systems for mixing and pumping the material.
There are different types:
Traditional screeds in sand and cement;
Quick-drying screeds in sand and cement;
Premixed expanded clay lightened subbase.
They are a type of screeds made with cement, sand and chemical additives, which, combined with water, make the mix very fluid and easily leveled.