How To Crack Elicence I Have A Cabin In The Mountains That I Want To Cover The Lower Concrete With Manufactured Stone. How Do I Do I?

I have a cabin in the mountains that I want to cover the lower concrete with Manufactured stone. How do I do i? - how to crack elicence

The concrete was sealed, but is suspended, and the closing agent is dry and cracking. Should I blow things out of sand, or do I anchor a layer of gravel first mesh on the same