Concrete resurfacing can in the reduction of permeability when a dense overlay or micro topping is used

https://remingtonmnlv889.iamarrows.com/concrete-spall-vs-delamination-how-to-tell-and-what-to-repair

Concrete resurfacing can lessen permeability when a dense overlay or micro topping is used, yet basically if the bond to current concrete is non-stop.