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Yep, but last time I was involved in a project that used stainless steel rebar (admittedly several years ago), it costed 4-6 time "normal" rebar steel (I believ
by jaclaz 5y ago
Yep, but last time I was involved in a project that used stainless steel rebar (admittedly several years ago), it costed 4-6 time "normal" rebar steel (I believe nowadays it is more like 3-4 times, but I don't know for sure), and even the (now thankfully not used anymore) resinated/epoxy covered steel was (besides more costly than normal one, I seem to remember something like 150-180%) a nightmare to bend, move and place (properly). Never heard about stainless coated steel, maybe you are thinking of zinc coated (that has been a common enough material, , particularly in bridge and viaducts slabs, costing something like 120-130% of normal rebar steel).
- Animats 5y agoYes, stainless steel is about 4x more expensive, but that ends up being about 2% of project cost. This is a big win long term, if the owner is looking that far ahead. Right now, the main use seems to be concrete bridge replacements of bridges over saltwater in climates that use salt for de-icing. Oregon built one 20 years ago, Montreal built one last year. When you're replacing a bridge because corrosion destroyed it, it's not hard to justify stainless. The price is coming down as the volume goes up.