Originally posted by JayinAR
I guess it is possible.
I'm not sure it goes a great way to solving anything either way.
As someone else pointed out, you are STILL lugging the load up a ramp. Anyone here ever worked concrete? It is a pain in the behind. Very heavy. And even the author's own work says that this was only done for the upper courses. Which means that half of the thing (200') would have been constructed the "conventional" way.
Plus, the core of the pyramid is made of granite. Extremely heavy stones. The King's chamber, for instance, is surrounded by HUGE blocks of granite and it is situated over 150' above ground level.
This is a good thread and I'll give it a star and flag on presentation and intrigue, but as I said, this does nothing to solve anything. The same problems still exist.
Originally posted by really
I worked for a small construction outfit many years back and had to mix concrete with a shovel. Even with thick work gloves the palms of my hands had blisters within the blisters within the blisters.... The Egyptians would probably have mixed this stuff the same way. It would still have been a horrendous amount of work.
Yes, it appears that this 'artificial limestone' technology may indeed pre-date the Romans by millenia. Quite possible it was once used extensively but over time, forgotten and slipped into obscurity.
In fact, it also mentioned that many of the stone jars/urns used by the Egyptians ... the ones with extremely narrow necks that increase into very bulbous main sections .... may also have been 'cast' rather than using a hunk of rock/stone that was hollowed out to form the jar/urn.
The main problem being that it's difficult to understand how the huge volume of rock/stone material from the inside of the jar/urn was removed if the only access was down the inside of the very narrow neck.
How would you go about grinding away that material to form the inside of the jar/urn ?
Originally posted by Blackmarketeer
This topic has come up before, so I'm surprised this link hasn't yet been posted in this thread:
Ramp for the GP would have been excessively long to reach the top (and a greater mass than the GP itself)
Originally posted by Hanslune
The problem with all of this is:
Both Davidoits and Barsoom cannot point to a single stone made of concrete.
The core stone when examined are of very different sizes, shapes and condition - which would require separate molds
In the wadi near the pyramids are several thousands TONS of lime stone rubble from the construction - why throw it away if they were using concrete??
If they were using concrete why did they use gypsum mortar inbetween the blocks? Why not......concrete?
Egyptians did have a crude form of concrete which they used for fill - there is no sign of it at any pyramid.
The Roman Cestius pyramid in Rome is built of concrete - and it is easy to tell that it was. It is 22 by 27 meters and was built in 330 days