I had my shop built. The shop had a concrete floor 4" slab. The builder used fiber mesh concrete I put plastic down underneath the steel. The floor has a semi rough finish. The question is its been a month since the pour. The floor is dusty and in some spots I can take my shoe sole and rub hard and it looks like I am making sand, not too bad though. I want to power wash it down. Wil this solve the sand / dust problem or did I get a bad load of concrete. If it was a bad load of concrete what can be down.
PS no calcuim was added to the concrete prior and during the pour. It was around 65 to 70 degrees if this will help . thanks