> Some speculate about the “pouring” of some Great Pyramid blocks using a geopolymer and crushed limestone. I'd forgotten about this! We should be clear that t

> Some speculate about the “pouring” of some Great Pyramid blocks using a geopolymer and crushed limestone. I'd forgotten about this! We should be clear that the "some" here are cranks: http://www.geopolymer.org/archaeology/pyramids/ http://www.geopolymer.org/archaeology/pyramids/