Comments by "Doncarlo" (@doujinflip) on "" video.

@SepticFuddy We know how they did it, but it's not economical because of how much material and curing time it would consume, along with the changes in loadings that we demand from it (a lot more tensile stresses instead of pure compression). Nowadays the focus is on additives that make the concrete easier to work with using less water (making it cure faster and stronger) along with improving flexing tolerance, cracking patterns, etc.
3