Ancient Egyptians built Pyramids with concrete blocks, scientists say - World - Times Online: "Pyramids were built with concrete rather than rocks, scientists claim
Charles Bremner, Paris
# Method used only at higher levels
# Blocks set using a limestone slurry
How the Egyptians really built a Pyramid
The Ancient Egyptians built their great Pyramids by pouring concrete into blocks high on the site rather than hauling up giant stones, according to a new Franco-American study."
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