> Why would concrete melt, ever? The components of concrete melt, and they melt not long after steel does. You’d have entirely melted concrete before 2,000 deg

> Why would concrete melt, ever? The components of concrete melt, and they melt not long after steel does. You’d have entirely melted concrete before 2,000 deg C, depending on what’s in it. When rock melts, it becomes a material quite familiar to you. Cement melts sooner, and those are the two main components. We’re not talking about that, though, as the issue at this airport is squishiness of tarmac.