We have a back patio with colored concrete that was poured last year. When the concrete was poured, it looked like the color was only picked up by the first half of the pour. The contractor poured the concrete mid-day when it was at least 110 and ended up not doing a proper finish because it was too hot for them to keep working. The result was the concrete ended up with slurry and trowel marks everywhere.
The contractor attempted to fix the concrete by putting some type of sealer over the top which ended up looking even worse.
What can we do (besides pulling everything up and re-pouring the concrete) to seal the concrete properly and get rid of the blemishes (see photos)?
From the photos, you can see the sealer splashes, improper broom marks, chipping everywhere, etc...
Click an image to see it full-sized.