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Make a Classic Cobblestone Path Using Only Concrete
For centuries, all the way back to Ancient Rome, rounded stones connected by mortar were a charming and sturdy way to build ...
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Scientists learn secrets to Roman concrete that’s kept structures standing for 2,000 years: ‘It sustains itself’
A similar effect might be achieved for buildings made with volcanic rock. As geologist Marie Jackson ... while the starch from rice has been used in the concrete that holds together the Great Wall of ...