Ka Bar, I have considered the use of adobe in Oregon. The reason we are building the CEB brick machine is because of the weather.
I have lived here in Oregon my whole life and here on the coast range for the last 12 years, it usually rains 2x as much as in Portland.
One of the reasons that they do so much more adobe in arid places is the lack of trees for building materials, cost of the dirt, and also the high thermal value of the adobe bricks.
Sir Stubby Eyre wrote:Our buildings will be build out of Adobe block and plastered with a lime finish.
"The advantages of CEB are in the wait time for material, the elimination of shipping cost, the low moisture content, and the uniformity of the block thereby minimizing, if not eliminating the use of mortar and decreasing both the labor and materials costs.
CEB can be pressed from humid earth. Because it is not wet, the drying time is much shorter. Some soil conditions permit the blocks to go straight from the press onto the wall. A single mechanical press can produce from 800 to over 5,000 blocks per day, enough to build a 1,200 square feet (110 m2) house in one day." Wikipedia
In my research I have found quit a few 100 plus year old houses on the northern East Coast. Their weather is about the same as ours. Also if 5% cement or lime is added to the mix it is considered stabilized CED. They are weather/water proof. We will be plastering the exterior of these buildings to add more weather proofing.