Use an aggressive grit to get the bulk of the glue off and then switch to a finer grit in the 300 s range should suffice to finalize the sanding across the floor.
Remove glue from basement floor.
There are several tools that can be used to remove flooring adhesive including.
Using one can take a lot of work so be sure to wear gloves to avoid blisters.
Never place a hot object directly on the glue.
Spread some kitty litter on the floor to help soak up the black liquid glue.
Make sure it is as flat and straight as possible.
Wait a few minutes for it to begin to soften then scrape up what remains.
An adhesive remover will chemically softens the glue to make it easier to scrape.
Work in small sections so that you can remove the softened carpet glue before the water cools.
Use the ironing method.
When the glue starts to become pliable use your scraper tool to work it out of the concrete.
If necessary use multiple towels to cover the whole area.
The hot water loosens the glue by melting it and makes it easier to work with when cleaning.
Just a small area of concrete to remove the glue.
A rented floor sander or a floor buffing machine with a sanding disk should get the job done.
When or if the adhesive becomes soft scrape it again to remove what s left.
Apply the adhesive remover on the concrete floor following the instructions on the box.
Start by softening the glue residue with a natural glue remover like boiling water then continue scrubbing until the glue detaches from the flooring.
After you ve scraped as much off as you can you can try hot boiling water to soften the glue.
Place a towel over the glue residue.
Instead of pouring your water directly on the floor lay a fresh towel over the area you intend to clean.
This will allow the glue residue to heat up and absorb moisture more evenly.
Use a powerful adhesive glue remover.
Aim a heat gun at the adhesive or hold an iron a few inches above it.
A simple hand floor scraper has a metal blade mounted on a handle.