"cement" is just the beginning of a more fascinating journey into the work of Joseph Davidovits. I encourage anyone interested in this to read his books, including "The Pyramids: An Enigma Solved" and "Why the Pharaohs Built the Pyramids with Fake Stones". This isn't a crank theory. He has patents on the process, which ironically, could have been declined on the basis of "prior art", but since no one believed him, he has the patents. One can buy kits of everything needed to mix up personal batches and independently confirm his chemistry. https://www.amazon.com/Pharaohs-Built-Pyramids-Fake-Stones/d... https://www.amazon.com/Pyramids-Enigma-Solved-Joseph-Davidov... https://www.davidovits.info/book-why-the-pharaohs-built-the-...