#Brazil The science behind the threat begins with chemistry. Steel bars embedded in concrete are protected by a passive oxide film sustained by the high alkalinity of the pore solution. Carbon dioxide from the atmosphere diffuses into the concrete & reacts with the cement matrix, a process called carbonation that lowers the pH & dissolves that protective layer https://bioengineer.org/climate-change-could-silently-corrode-brazils-concrete-buildings-study-warns/ #ClimateChange #UpheavalClimate #ClimateInstability #ClimateReversal #pollution #ecology #environment #climate