Jun
This is one of the oldest building technique that is still in use today. It has many advantages, but specifically being vermin-, dust-, fire-, flood-, insect-, bullet-, and rust-resistant. It is also easily cleaned with a sponge, and requires minimal maintenance. Because the materials used are non-toxic, adobe buildings are non-allergenic.
Adobe is basically just mud mixed with a bit of straw. The best adobe soil is 15 to 30% clay with the rest being mostly sand or larger aggregate; it is occasionally stabilized with cement or asphalt emulsion. This mixture is then shaped into blocks to either form walls by stacking, like bricks, or to be just stacked to create a structure over time. The buildings need large eaves to protect the walls and foundation from the weather.
Unfortunately, adobe, while it has good thermal mass, doesn’t insulate very well. This is sometimes fixed by making a double wall with an air space or insulator in between. Insulating materials can also be on the exterior.
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