I imagine a substantial part of this is the rusting of rebar in concrete structures. The problem of rebar has fascinated me, and one German company has begin ma

I imagine a substantial part of this is the rusting of rebar in concrete structures. The problem of rebar has fascinated me, and one German company has begin making carbon fiber reinforced concrete instead of steel, with amazing results. You can reduce environmental waste by having structures last longer and you use less concrete. I'm looking forward to this becoming more ubiquitous. https://www.aboutcivil.org/carbon-reinforced-concrete-building-cube https://www.aboutcivil.org/carbon-reinforced-concrete-buildi...