Polypropylene synthetic fibers agglomerated into flocks, characterized by a high specific surface.
were expressly conceived to prevent the plastic shrinkage of concrete, which causes cracks, especially during the middle aging period.
Perfect dispersibility in cementitious mixtures, high adherence properties to the matrix, and chemical resistance in the alkaline environment make synthetic fibers particularly suitable to be used in cement matrices.

The use of synthetic fibers, when fresh, allows:
-considerably limiting the shrinkage of concrete during the plastic phase;
-limiting bleeding and segregation phenomena;
-facilitating surface finishing.

When hardened, they contribute to obtaining more long-lasting concrete, as it is crack-free.