> This study conclusively demonstrates that there is absolutely no evidence of an alkali-aluminosilicate-based composition in the binder phases of the casing stones, nor is there any evidence of “unusual” constituents in the pristine, bulk uncontaminated interior of the casing stones to call for a “man-made” origin. Despite the detection of a man-made “coating” on the Lauer casing stone, the stone itself is determined to be nothing but a high-quality natural limestone mineralogically, texturally, and microstructurally similar to that found in the quarries at Tura-Masara. ...
> Despite its many reported ancient routes, and unquestionable potential future applications of geopolymer technology, the Egyptian pyramids, in author’s opinion, still stand as marvels and mysteries of ancient engineering technologies exercised by the Old Kingdom (2500 BC) stone masons.
As a non-geochemist, I can say nothing about it one way or the other, and I know that I can be easily swayed by good sounding but wrong statements.
Perhaps it's like Thor Heyerdahl's Kon-Tiki. He showed that it was possible to go by balsa wood raft to Polynesia. That doesn't mean his diffusionist model of cultural development was what happened. That the Egyptians could have used geopolymer technology doesn't mean they did.
> This study conclusively demonstrates that there is absolutely no evidence of an alkali-aluminosilicate-based composition in the binder phases of the casing stones, nor is there any evidence of “unusual” constituents in the pristine, bulk uncontaminated interior of the casing stones to call for a “man-made” origin. Despite the detection of a man-made “coating” on the Lauer casing stone, the stone itself is determined to be nothing but a high-quality natural limestone mineralogically, texturally, and microstructurally similar to that found in the quarries at Tura-Masara. ...
> Despite its many reported ancient routes, and unquestionable potential future applications of geopolymer technology, the Egyptian pyramids, in author’s opinion, still stand as marvels and mysteries of ancient engineering technologies exercised by the Old Kingdom (2500 BC) stone masons.
As a non-geochemist, I can say nothing about it one way or the other, and I know that I can be easily swayed by good sounding but wrong statements.
Perhaps it's like Thor Heyerdahl's Kon-Tiki. He showed that it was possible to go by balsa wood raft to Polynesia. That doesn't mean his diffusionist model of cultural development was what happened. That the Egyptians could have used geopolymer technology doesn't mean they did.