Stainless steel rebar is an often overlooked option. In theory, solid SS rebar should outlast the concrete, but it is a difficult thing to accurately study. In favorable conditions, regular rebar reinforced concrete starts to need major repairs after ~40 years due to corrosion.
The Progresso Pier in Mexico was build over 80 years ago with SS rebar, and reportedly has not needed any renovations. A pier built 20 years later using mild steel rebar has been almost completely destroyed by the ocean.
I wish more large infrastructure projects would use it. The up-front costs can be 2x higher, but the lifetime savings win out in many situations.
The Progresso Pier in Mexico was build over 80 years ago with SS rebar, and reportedly has not needed any renovations. A pier built 20 years later using mild steel rebar has been almost completely destroyed by the ocean.
I wish more large infrastructure projects would use it. The up-front costs can be 2x higher, but the lifetime savings win out in many situations.
https://www.amusingplanet.com/2015/10/progreso-pier-worlds-l...