On 15 Aug 2005 22:34:35 -0700, wrote:

We put in a concrete hangar floor and the finish is less than
desirable. There are patches where it's recessed (about 1/8"- 1/4"
recessed and rough) and then other areas where it's rough and proud
(about 1/8") with swirl marks.

Is there anything we can do to mechanically smooth this? Do they make
a big sander for concrete and how well does it work?

There is a product called "ARDEX" that was used inside to smooth out a
rough finished concrete floor. It's fairly easy to use in that you
mix it and then simply pour over the floor allowing it to settle in
and level out. When it cures, the surface is smooth.

It was used inside an occupied building and did not have much of an
odor to it.

Corky Scott