A floor screed is usually made of the same basic ingredients: cement, aggregates, water. The cement, however, has a much coarser mixer of large aggregates which gives it more strength and durability to the entire structure.
Today complex buildings from residential to high-rise commercial require hassle-free solutions for flooring & walls which can perform in long term and does not create unwanted trouble. When it comes to flooring solutions such as level screed, before fixing of tiling or stone or having exposed cement concrete for final use, need to qualify many requirements.
Many a time surface of a concrete floor is not hard enough for the type of use it is put too. The outcome is that it wears or dusts off quickly. It is conceivable to build the life of such floors by use of specific materials known as 'Floor hardener'.