Tag Archives: stone

Some notes on Geopolymer, cement, clay bricks unfired, and DIY

How to make your own cement, liquid stones, and some papers showing it is catching on, and how to do it. Continue reading

Posted in Earth Sciences, History, Tech Bits | Tagged , , , , , | 47 Comments

Roman Obelisk And Big Stones

An existence proof of moving 230 Ton stones with primitive methods. Continue reading

Posted in History | Tagged , , , | 41 Comments