Concrete resurfacing can lower permeability when a dense overlay or micro topping is used

https://hyper-slouch-61f.notion.site/Concrete-resurfacing-can-correct-unevenness-and-scaling-3a6fc1a7d9d48053a379dcea3bab915f

Concrete resurfacing can slash permeability whilst a dense overlay or micro topping is used, however most effective if the bond to existing concrete is steady.