Submitted by PienotPi t3_10x5i7l in philadelphia
Indiana_Jawns t1_j7quuwe wrote
Reply to comment by DisciplineShot2872 in SEPTA train derails in Philadelphia after crack in tracks, no injuries by PienotPi
Freeze/thaw cycles can damage stone if there’s water, since it’s the expansion of the ice that caused the damage (same thing that causes potholes). I think in this case it’s more likely that cold just makes metal brittle and more likely to crack (as noted in the article).
DisciplineShot2872 t1_j7qv0ap wrote
Got it. It's been a while since I've done materials stuff. Thanks!
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