Advanced technology plays no part in the production of s. ...An individual of the could produce geopolymers... [with] the knowledge that comes from i… - Joseph Davidovits

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...

Khusi-to build in reagglomerated stone, and this is what we get as sentence in the Famine Stele: "with these products (that are depicted in the... columns in hieroglyphs) they have built the pyramid (the royal tomb)." Which pyramid? It is the first... of ... built by ... It is the first pyramid, the step pyramid at ... made of small limestone bricks... manufactured like crude clay bricks. They took the molds, made the bricks, transported them, and laid down the pyramid. ...[T]hey used the same technology ...previously... in the monuments and... the enclosure of , the pharaoh just before... Djoser.

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.