A:Answer Concrete will affect any router, and while I haven't used this specific one in such an environment, I HAVE used much worse routers in my warehouse with no noticeable issue.
I have multiple offices 20-40ft from the router, which is in a concrete warehouse with steel doors. I've had almost zero hiccups in 1.5yr. (a few thousand aluminum cubes miiiight be the cause) I get proper speed/ping/etc, and have even used the WiFi to play a few games when I had to stay late and had no issues. Ironically, ping was actually better there than at my house. :(
Sorry I can't give a proper 1-1 comparison, but I'd assume this one will be just fine, as it has notably better signal stability/range than my work routers. (that I've also used in normal office environments)
AAAAAND if it's not quite up to it, just add another.
