You could use Tapcon (maybe it's Topcon) screws too...I used them with no
problem, although for something a bit smaller. All you have to do is make
sure you use the appropriate size drill bit for the size screw you would
use.

You can also get devices that work similar to drywall expansion adapters.
Drill the hole in concrete - insert the piece and simply screw it in to
tighten it in the wall. The ones I used in this case were threaded on the
outside so I could put a washer and nut on.

Keith P.