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Very interesting.!
I like how they talk about the romans with their concrete when the ancient arabs in petra and the Egyptians where using concrete. Hell the egyptian made the first geopolymer concrete just ask imoteph.
Very interesting.!
I like how they talk about the romans with their concrete when the ancient arabs in petra and the Egyptians where using concrete. Hell the egyptian made the first geopolymer concrete just ask imoteph.