Egypt
Another pyramid building with concrete theory
TVNZ
A Wellington scientist has come up with an explanation that may help solve the question of how the ancient Egyptians built the pyramids.
It has been widely thought massive blocks of stone cut from quarries were dragged to the building sites.
But Professor Ken MacKenzie from Victoria University had his doubts, so he tested a small sample of a block from the famous Bent Pyramid, built more than 4500 years ago, at his Lower Hutt lab.
He ground it to powder, put in a spectrometer containing a powerful magnet and spun it at a staggering 12,000 revolutions per second.
From that, he was able to get a sub-atomic analysis of the pyramid block. It showed that rather being solid stone, it was a mixture of several materials, a sort of ancient concrete.
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Conference Report: Discoveries At Seilla Pyramid
Heritage Key (Owen Jarus) With photographs. Thanks to Owen Jarus for pointing me at the above article about recent work carried out at the pyramid at Seila. Here's a short extract. A Brigham Young team excavated the pyramid in the 1980’s and 1990’s....
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Gathering "concrete" Evidence
MIT News - HTML (David Chandler) MIT News - PDF Even though they are among the best-known structures on Earth, the pyramids of Egypt may still hold surprises. This spring, an MIT class is testing a controversial theory that some of the giant blocks that...
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Michel Barsoum Great Pyramid Construction Theory
Thanks very much to Kat Newkirk for sending me these links. http://www.livescience.com/history/070518_bts_barsoum_pyramids.html A summary of Michel Barsoum's research into whether or not a form of concrete was used in the construction of the Great...
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New Theory Re Construction Of Great Pyramid
http://news.independent.co.uk/world/science_technology/article2405133.ece"It was one of the seven wonders of the ancient world, and the only one of them to remain standing today. Yet the story of how the Great Pyramid of Giza was actually built has remained...
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Concrete Evidence
http://www.newscientist.com/article/mg19325880.900-concrete-evidence.htmlA follow-up letter to the New Scientist article about the concrete-in-the-Great-Pyramid speculation (9th December 2006, p.6) has appeared in the most recent issue of New Scientist...
Egypt