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Is there a non-cement based concrete? Would it be tagged differently? Mateusz Konieczny (talk) 18:36, 3 September 2022 (UTC)

Technically, according to wikipedia, yes. Apart from "cement concrete" (surface=concrete), most commonly known is asphalt concrete, usually shortened to just "asphalt" (or tarmac). That one is obviously mapped differently, as surface=asphalt. There is however also polymer concrete which probably might often also be mapped as surface=concrete (or as surface=paving_stones, depending on the format). Wikipedia above also mentiones other types... --mnalis (talk) 20:16, 3 September 2022 (UTC)