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by frahs
3058 days ago
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I know with plastics, "flame treatment" is a common way to prepare surfaces for bonding (with epoxy). I could imagine that maybe flame-treating concrete has some benefits for tunnels. Probably gets rid of any oils on the surface. I'm totally just guessing here. It could also just be an inside joke or a something else, but Googling shows that it might be a thing: http://www.concreteconstruction.net/products/decorative-conc... |
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