The chemical bond of a resin coating to a substrate is crucial to the success or failure of a floor coating system.
You can achieve a good bond by completing appropriate surface preparation through diamond grinding, scarification or enclosed shot-blasting. On concrete substrates, these methods of preparation clean the substrate and create a open textured profile which the resin coating can adhere to.
If appropriate preparation is not completed then the floor can de-bond from the substrate causing the coating to break away from the substrate. If there is a chip or crack in the coating down to the bond layer, this process can speed up as contaminants get underneath the coating and cause mass delamination and failure.