this post was submitted on 25 Nov 2023
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[โ€“] starman2112@sh.itjust.works 33 points 1 year ago (1 children)

Most cements melt at a higher temperature than most lava gets to, so it would be solid chunks of cement getting blasted miles out when the pressure builds high enough to erupt

[โ€“] FleetingTit@feddit.de 8 points 1 year ago

It probably wouldn't melt, but if you heat moist concrete it will spall ans crumble to bits before too long.