Innovation — buildings made of rammed earth?

Cheap, tough and green: why aren't more buildings made of rammed earth? Beautifully rendered: rammed earth walls don’t typically need decorating. Author provided Daniela Ciancio, University of Western Australia It’s fair to say that rammed earth, as a construction technique, has stood the test of time. It has been used to create buildings around the world whose beauty and robustness are still visible today, like the Alhambra in Spain and the Great Wall of China, both built more than 1,000 years ago. Traditional rammed earth is made of a mix of clay-rich soil, water and a natural stabiliser such as...