Originally Posted by JefeTheVol
i think the hole is from the dripping, not necessarily because of beer's acidity. If that were the case coca-cola would eat away concrete too. The beer would probably only stain it. Concrete is so brittle dripping water would easily puncture a hole in it. just look at driveways that dont have drainpipes on their roof.
Eh coca cola would eat through concrete. The carbonic acid levels are pretty high, the old penny in the coke trick will demonstrate it's power.
My father was working in a coke factory years ago fixing some of their plumbing, he encountered pipes that were very very heavily scaled and he needed to clean them out. One of the coke employees saw his dilemma so he said to him to wait, he came back with a vat of coke concentrate, they left the pipes in there overnight, he came back the next day and they were like new.
He didn't have to do any cleaning beyond washing off the coke concentrate.