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Lead emissions was hyper specific and a replacement was immediately available. There's unavoidable emissions in logging, concrete, steel so we'll always need a
by ioseph 5y ago
Lead emissions was hyper specific and a replacement was immediately available. There's unavoidable emissions in logging, concrete, steel so we'll always need a way to offset emissions even after switching all power generation and transport
- PaulHoule 5y agoConcrete is totally avoidable, but the Portland Cement lobby won't yield to geopolymers or Chinese CAC members despite reminder after reminder (like last week in Florida) that portland cement + rebar is temporary at best.
- namibj 5y agoThe case in florida wasn't due to portland cement, but due to incompatible aggregate (read: sand) being used. We have a good understanding of the mechanisms now, and non-flowable concrete doesn't have lifetime issues (unless you could centuries as "temporary"). Turns out: capital markets don't incentivse >>50y investments.