Can I apply microcement on concrete?

Concrete is one of the best substrates, but it must be matured, strong and free of separating layers. Dust, cement laitance, adhesive residues or local level differences need to be removed by grinding and vacuuming. It is therefore not only about the material of the substrate, but especially about its condition. Before application, check hardness, flatness, grease, dust, cracks and any movement. If the surface is risky, it is better to reinforce it or first create a test area. And it must be flat and smooth (ground down).