Yes they can!
It’s called water degradation and can be caused by any number of things. Fire, aggregate expansion, bacterial corrosion, calcium leaching and many others.
Many basement floors get damaged by the high water tables and backed up sewers.
Untreated sewer water can produce hydrogen sulfide, which is then oxidized by aerobic bacteria present on the concrete surface above the water level. The sulfuric acid dissolves the carbonates in the cured cement and causes strength loss, as well as producing sulfates that can be destructive to the concrete.
Hardscapes Inc. has a solution to this problem. A clean up of the concrete floor and then sealing the concrete with a great decorative coating can preserve and update your damaged basement floor. This is a great alternative to replacing rugs and hardwoods.
For more ideas on how to restore or create your concrete Hardscapes Inc. has the answers. 403-547-5597