"Limestone is not entirely a product of pressure..."
- Interesting that the softest, (marble), would be the most reliant on pressure, if that's what you were saying there. If so, its counter intuitive.
I'm in Canada btw, and spent many years rock climbing on our natural limestone escarpments, (which I just identified as dolomite), as well as many other places throughout North America. Even on my local harder version of limestone, the hand holds of popular routes become very polished and smooth just from hand friction. More so than any other rock I've climbed on, (including Granite, Sandstone, Basalt, volcanic tuff, quartz monzonite, etc.)
"Davidovits standard for limestone based geopolymer concrete is 90 MPA and he claims they have achieved 150 MPA."
- Is that modern man made today, or is that referring to ancient identified geopolymer megalithic limestone?
"In slabs they still sometimes put in steel reinforcement but Geopolymer has extraordinary tensile strength already"
- I realize, but for my cost efficiency presumptions, its probably cheaper to add rebar and less material to maintain tensile strength.
"You are touching on some areas which restricts many from accepting/ considering the possibility of geopolymer use by Ancients. "
- Good point. But coming from a perspective of the place holder term of 'magic stone softening', and reconsidering the geopolymer approach, strictly from the merits of the chemical analysis, I find the weakest part of geopolymer theory is the suggestion it was treated, produced, and worked with like modern day cement, and the remains don't support it to me, (lack of repeating patterns, simplistic brick shape vs polygonal, pillowed, etc.).
I get the impression people think the repeating pattern of a brick is some kind of advancement, but the brick is stupid easy. Its those polygonal shapes that's next level. If I judge the ancients from their polygonal systems, with the assumption they had a concrete system that lead to that, then they had to have spent a LONG time with bricks first before getting there, and I can't see enough of that progression evidence.
So with a mind to reverse engineering from what I see, if it WAS geopolymer manufactured rock, then there had to be some factor about it, that limited it to a very thick viscosity like clay at its loosest. At least then I could see the challenge with mold making because you can't force thick clay into complex shapes. It would be just easier to approach wall building as blobs with cleaned up faces. But then you gotta wonder about those knobs.
I don't know. Alot hurts the geopolymer idea if its presented as cement. I think that part of its association needs to be refined and clarified to more accurately reflect the actual archeological remains.
Edited 1 time(s). Last edit at 08-Jan-20 20:32 by Open mind.