Anticrack additives for hobby concrete

The essence of the admixture is that when added in small quantities to cement-based concrete, even jewellery concrete, it prevents surface cracks.
Features:
It contains hundreds of millions of fibres per kilogram.
It does not rust
Invisible on the surface
It makes the mechanical properties strong
Even tiny doses are effective
Homogeneous distribution
Simple and secure application

Usage:
When added to mixed but still thin concrete at 0,3% by weight, it already gives a satisfactory result. For fast-setting materials such as, e.g. hobby concrete, it is advisable to add it to the water first, then add the concrete to it after a short mixing.