It is a fascinating process. I would be very interested to see a compressed, stabilized earth brick building tested for earthquake resistance. It would also be interesting to see how having 2 1/2″ and 3/4″ gravel, bound together under a 15″-thick raft foundation would stand up to an earthquake. A man used the gravel trick in the foothills of Adelaide, Australia, in the 1940s. His house was the only one that did not crack during the 1950s earthquake, but his use of forte con plastic attracted white ants. The idea is that the gravel takes the shock loading from the movement, and having a thick slab should allow the whole house to move as one. Yes, I am working on a project that has half-inch deformed or twisted reinforcing every two feet vertical and horizontal, all core filled with cement. Then, in the upper levels, a 3/8-inch sheet with a 1-inch deformed bar is run at 45 degrees to the sheet, with the crossing lines at random intervals; for my reasoning, see the Citi Building and Surfside Towers. This is supported with a 6-inch square hollow section tied into the inner and outer walls in both directions. This helps the floor on each level.