Was interesting but a bit of his info was wrong, quicklime is not flammible. I've been working with it for 20 years and none of my machines have burst into flames or the tankers delivering it around the country to us haven't either.
Never known it to burst into flames either, it can burn your skin by alkali burns and it does give off heat when added with water but not flames, maybe he meant Limelight, used in stage lighting back in the day but you need to heat it up a bit to get that effect.
Couple of other bits in the article I'm not too sure about as well, most concrete structures are designed on a 50 or 120 year design life so as for not lasting 10years is a tad wrong but those Romans were a clever lot, using PFA in concrete and also pumice as a lightweight aggregate allowed them to construct some impressive buildings, especially some of the unsupported domes.