So I have a garden fire to et rid of some stuff, there was evidently some plastic that ended up going on there. When everything was cooled down I've
noticed plastic has melted into the concrete.
I've tried scraping, burning with a torch etc. and it's not perfect.
My next idea is to try some nitric acid since this does terrible things to most plastics!
Any other ideas?fx-991ex - 9-2-2024 at 12:52
dissolve with acetone?Jenks - 10-2-2024 at 10:29
Maybe it would burn off cleanly if supplied with a stream of oxygen.Chemgineer - 20-2-2024 at 13:07
So i've had some success, every now and again I have a suck back incident with my nitric acid and I end up with sulfate contamination.
I know I could distil it but since I have my plastic problem i've poured about 200ml of this onto the concrete where is bubbles and reacts with
something.
It now seems to have much less integrity and I bet a jet wash will be able to lift it now!
**Failing that I suppose thermite might help! lol
[Edited on 20-2-2024 by Chemgineer]Sir_Gawain - 20-2-2024 at 17:30
The nitric acid is probably reacting with the concrete. If any acid gets under the plastic, it should help loosen it by etching the concrete. Rainwater - 20-2-2024 at 17:48
I recommend a steal wire brush attached to a drill. Works for unwanted tattoos amd silver nitrate stains averageaussie - 20-2-2024 at 18:00
There was some alcohol and a divorce and a name and an arm. If it works it ant stupid
arm + angle grinder doesn't seem like the smartest idea...
just because it works doesn't mean there aren't better methods, for all the new guys reading this thinking just because something works, there isn't
another method that not only works better, but is a LOT safer.
if you are going to do something stupid, do it safely please.Rainwater - 21-2-2024 at 17:08
arm + angle grinder doesn't seem like the smartest idea...
thats why i used a drill, you would have to be
insane to use a grinder. But all jokes aside, it was perty stupid and resulted in scars and infection. Next time ill use more alcohol j_sum1 - 21-2-2024 at 19:01
arm + angle grinder doesn't seem like the smartest idea...
thats why i used a drill, you would have to be
insane to use a grinder. But all jokes aside, it was perty stupid and resulted in scars and infection. Next time ill use more alcohol
I might be wrong, but it sounds like too much alcohol may have contributed to the problem in the first place.Chemgineer - 22-2-2024 at 05:11
The real issue here is the danger of getting married!Rainwater - 22-2-2024 at 17:03
From experience, if you happen to grind off some surface layers of concrete by accident or to remove discoloration, you can easily and cheaply
resurface that section by making a "patch". mix an equal volume of portland cement and sand to 1/3 but not more than 1/2 that volume of water. Stir
violently until the mix is spreadable. Work time, 10 minutes, set time 90 minutes, walk time 12 hours. For non driveable areas, 1/2 the portland
cement is needed
