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