Home Improvement
I would use a commercial concrete cleaner to remove any bad oil stains and then a solid sealer. Sika should make both of them and be available at the big DIY stores in the masonry section.
A well-sealed concrete countertop is a great work surface in a kitchen, though you might have to reseal it every year.
I looked into this and it seems there are 0 food safe concrete sealers available in Belgium that I can find. Strange.
Maybe find a marble and stone dealer who does kitchen installs and ask them?
I would look into grinding and sanding it flat and a resin coating to seal the surface. There are YouTube tutorials to DIY it if you are price conscious
This. I’d put some sort of trim on the edging, like the metal edging used with tiles. Then I would put epoxy resin on top - to seal and to flatten it out.
Since this needs to last for 2 years you can add a thin epoxy layer to perfectly smooth out the surface and make it hospitable.
Can you upload a photo so we have an idea?
I realized I never took any great pictures of it since this was lower priority, but here is a few that I have that include the bench to give an idea https://imgur.com/a/KgiqHrC
You get a resolution? I’d buy a cheap wet grinder and some sealant. You can polish it smooth and all chamfer (?) the corners of you so desire. You can also look at putting a fresh coat of concrete on top of its super pitted.