[T]he pyramid blocks are not natural stone; the blocks are actually exceptionally high-quality concrete—synthetic stone—cast directly in place. The blocks consist of... ninety to ninety-five percent limestone rubble and five to ten percent cement. ...imitations of natural limestone, made in the age-old tradition of alchemical stonemaking. No stone cutting or heavy hauling was ever required...
French materials scientist who invented geopolymers
(born 23 March 1935) is a French materials scientist known for the invention of chemistry. He posited that the majority of structural blocks of the are not carved stone but a form of limestone or man-made stone. He holds the .
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Just after, what we have is the starting of making a small pyramid in carved stone. ...We have here the pyramid of Ouserkaf (2460 B.C.)... just after the pyramid of Giza. It is just a heap of small stones... this one is totally destroyed and ...[the (2650 B.C.)] is still there. ...[T]his is big difference between a building made out of agglomerated stone and a small building made out of carved stone. ...It is no longer this very powerful and important technology...
... form[s]... one of the major areas of materials science. ...Inorganic chemistry concerns basic molecules such as s, metals, s, and minerals. ...[M]ost of the raw materials for geopolymer synthesis are rock-forming minerals. ...There are numerous reasons for being interested in mineral polymers, more specifically in geopolymers. One is to get fire and heat properties that cannot be covered by organic materials. Another is the bridge... between polymer science and ceramics.
Major efforts were dedicated to greenhouse CO2 mitigation with the development of low CO2 geopolymer cements. My research... started in 1990 at Penn-State University... The production of 1 tonne of kaolin based-geopolymeric cement generates 0.180 tonnes of CO2, from combustion carbon-fuel, compared with... Portland cement... six times less. Fly ash based-geopolymeric cement... up to nine times less than Portland...
In... 1983, with Joseph Sawyer as head of Lone Star's research laboratory... I started to develop early high-strength geopolymeric binders and cements based on based on both geopolymeric and hydraulic cement chemistries. Within one month Lone Star Industries Inc. formed the development company, PYRAMENT... exclusively dedicated to... this new class of cement. ...It was discovered that the addition of ground blast furnace slag, which is a latent hydraulic cementitious product, to the poly(sialate) type of geopolymer, accelerates the setting time and... improves compressive and flexural strength. The first Davidovits and Sawyer patent was filed in... 1984... The corresponding European patent... in 1985... and these... disclose our preliminary finding...of 1983. Geopolymer cements are acid-resistant cementitious materials with zeolitic properties that can be applied to long-term containment of hazardous and toxic wastes.
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What about the Cheops pyramid? ...We have the core, this is the mass, more than 2 million tons ...made of ...reagglomerated limestone. But ...in the ...inner ...it is made of granite ...carved stone. Why? Cheops... is Khnum Kufu... agglomerated stone. However, Pharaoh is the king of the two countries. ...[T]he pyramids must be the representation of Egypt,... which means ...the replication of agglomerated stone for the northern part ....and in the south, natural granite that is the carving technology. So we have agglomerated limestone for the core, and the King's chamber is made of split granite that is dressed [cut] ...not carved granite.