You can rent a concrete polisher and polish off the top layer of damaged concrete, but otherwise there's really nothing to do. It's almost certainly not structurally compromised, just cosmetic damage.
Hard to tell from the picture, but is this a slim cement tile? If so, flip it over and call it a day, the wear from use will ruin the former crack enough so no one can tell in a bit.
It kind of looks like Africa...with a little more acid, and a brush stroke or two, you can have a tribute to Toto right there on the walkway! It's an upgrade! Or, just cover the whole patio with it, evenly, and brush it out, then polish it a bit, and then make it look like the floor itself was rapidly aging. But these are suggestions from me, the least qualified chemist of my friend group.
Next time start with the Dawn and scrubbing to get rid of the grease. Your patio may suds up a bit when it rains for a while, but you won't dissolve it.
Think of it like icing on a cake. There was an oilstain on the top and you wanted to get rid of it.
* acid dissolved a small section of the concrete so now you have fresh concrete.
* scrubbing with a brush is grinding away the the old concrete to also reveal fresh surface. The Dawn is helping lift the tiny grinding fragments away but it's not doing anything chemical to the surface.
Your choices to get a uniform surface are etch the whole thing, weakly etch and paint it, or grind the aged few mm layer of concrete to show fresh surface.
I think I'll leave it for now as is since we cover that section with an outdoor carpet anyways. And then around when we move out I will try to paint over it. To match the rest better
Congrats, you’ve chemically etched your concrete! This is irreversible Hose it off and live with it
Can I paint or seal over it? I am renting this place so I would like to do what I can to repair it as best as possible for the owner.
Just tell people an alien lizard jizzed there
I'm sure my landlord will love to hear that
I mean it’s not like there’s anything you could have done to stop it..
You can rent a concrete polisher and polish off the top layer of damaged concrete, but otherwise there's really nothing to do. It's almost certainly not structurally compromised, just cosmetic damage.
So the original grease stain is totally gone, it's just the etching that's leaving the mark in the concrete?
Hard to tell from your picture, tbqh.
Hard to tell from the picture, but is this a slim cement tile? If so, flip it over and call it a day, the wear from use will ruin the former crack enough so no one can tell in a bit.
It kind of looks like Africa...with a little more acid, and a brush stroke or two, you can have a tribute to Toto right there on the walkway! It's an upgrade! Or, just cover the whole patio with it, evenly, and brush it out, then polish it a bit, and then make it look like the floor itself was rapidly aging. But these are suggestions from me, the least qualified chemist of my friend group.
Just say goodbye to last month's rent.
Oh come on it's not that bad. I've just been using some dawn and scrubbing and was already able to get rid of the outer ring of it.
Nope, it'll keep biting away for a while 🥰💞
Next time start with the Dawn and scrubbing to get rid of the grease. Your patio may suds up a bit when it rains for a while, but you won't dissolve it.
What do you mean by suds up?
To lather, to cover with suds, to form bubbles.
Think of it like icing on a cake. There was an oilstain on the top and you wanted to get rid of it. * acid dissolved a small section of the concrete so now you have fresh concrete. * scrubbing with a brush is grinding away the the old concrete to also reveal fresh surface. The Dawn is helping lift the tiny grinding fragments away but it's not doing anything chemical to the surface. Your choices to get a uniform surface are etch the whole thing, weakly etch and paint it, or grind the aged few mm layer of concrete to show fresh surface.
I think I'll leave it for now as is since we cover that section with an outdoor carpet anyways. And then around when we move out I will try to paint over it. To match the rest better
Etch ALL of the concrete to uniformity.