From Today I Found Out.

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Sources:

Berninger, Sheila & Rose, Dorilona, The Surprising Truth About How the Great Pyramids were Built, Live Science, May 18, 2007, https://www.livescience.com/1554-surprising-truth-great-pyramids-built.html

Jana, Dipayan, The Great Pyramid Debate, Proceedings of the Twenty-Ninth Conference on Cement Microscopy, Quebec City, PQ, Canada, May 20-24, 2007, http://nebula.wsimg.com/1b249a805d9a5573e0ccdfa1da597c66?AccessKeyId=D94D99729EAEC69E9267&disposition=0&alloworigin=1

Category: Pyramids, The Geopolymer Institute, https://www.geopolymer.org/archaeology/pyramids/

Davidovits, Joseph, They Built the Pyramids, Geopolymer Institute, May 2008

Harnell, James & Storemyr, Per, Ancient Egyptian Quarries – an Illustrated Overview, Geological Survey of Norway, 2009, https://www.ngu.no/upload/Publikasjoner/Special%20publication/SP12_s7-50.pdf

Engineering the Pyramids Special Projects, Drexel University College of Engineering, https://drexel.edu/engineering/academics/departments/materials-science-engineering/about/special-projects/engineering-the-pyramids/