In the late 1970s, French materials chemist Joseph Davidovits argued that the Great Pyramid's blocks were made from re-agglomerated limestone, or "man-made stone." He reported that microscopic examination of the Lauer casing sample revealed voids, organic fibers and other inclusions, which he interpreted as evidence of an artificial binder. Davidovits proposed casting blocks in three-sided wooden molds against already placed blocks. Egyptologists have rejected the concrete claim, and the evidence cited does not establish it.
Davidovits Proposed Cast Geopolymer Blocks for the Great Pyramid
EgyptTheory
Key facts
- Joseph Davidovits was a French materials chemist whose work included synthetic mineral materials and geopolymer binders.
- Davidovits advanced his cast-stone claim in the late 1970s, arguing that Great Pyramid blocks were re-agglomerated limestone or "man-made stone" rather than entirely carved natural stone.
- He examined the Great Pyramid casing-stone sample known as the Lauer sample and reported microscopic voids, organic fibers and animal fragments, which he interpreted as evidence of an artificial binder.
- Those features alone are not diagnostic of concrete, and Egyptologists have rejected the concrete claim.
- Davidovits proposed casting blocks in three-sided wooden molds placed against already completed blocks.
Sources
In Search of Concrete Evidence - C&EN - American Chemical Societycen.acs.org
He said the French geochemist Joseph Davidovits had postulated decades ago that the pyramids had not, as Egyptologists thought, been made of ...
(PDF) THE GREAT PYRAMID DEBATE Evidence from Detailed ...academia.edu
Detailed petrographic examinations reveal no evidence of a reconstituted limestone in the casing stones. Casing stones show no signs of alkali-aluminosilicate ...
Gathering 'concrete' evidence | MIT Newsnews.mit.edu
An MIT class is testing a controversial theory that some of the giant blocks that make up the great pyramids of Giza may have been cast in place from concrete.
Joseph Davidovits - Wikipediaen.wikipedia.org
He posited that the blocks of the Great Pyramid are not carved stone but mostly a form of limestone concrete or man-made stone. Contents. 1 Limestone ...
Paleomagnetism study supports Pyramid man-made stonedavidovits.info
Paleomagnetism study on several pyramid stones demonstrates the validity of Davidovits' theory on the artificial nature of Egyptian pyramid stones.
concrete in the Pyramids - CIVL 1101ce.memphis.edu
Egyptologists have rejected the concrete claim, first made in the late 1970s by Joseph Davidovits, a French chemist. concrete limestone in ten days.
They Built the Pyramids - Joseph Davidovitsbooks.google.com
He shows how the Pyramids were built by using re-agglomerated stone (a natural limestone treated like a concrete), and not with huge carved ...
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