RMIT study lead author Jiaming Ma holding the cardboard-confined rammed earth material. Courtesy of RMIT
Building using soil isn’t new. Structures dating back 10,000 years to Mesopotamia and the Near East were created using techniques like adobe (sun-dried bricks) and rammed earth, including the Great Wall of China.
But for most modern-day uses, it’s undesirable. It is vulnerable to water damage, has high maintenance needs, and exhibits low structural strength, as well as high shrinkage/swelling rates that cause cracks with changing weather.
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