Rammed Earth at MIT

A team of MIT architecture students built a wall behind the MIT Museum of rammed earth using a combination of 30 percent Boston Blue Clay mixed with sand and gravel. Twelve tons of this clay, common at depths of 30 to 60 feet in the metropolitan Boston area, came from the excavation site of a new building at Harvard. “The wall will serve as a long-term test of rammed earth in New England, allowing us to observe the way various soil types used in construction stand up to the climate,” said Joe Dahmen, a graduate student in architecture who is leading the project. [ more at livescience ]