“Japanese construction and design firm TIS & Partners has just unveiled a strong and surprisingly low-tech brick that can be rapidly produced in disaster areas, and applied to the quick construction of long lasting shelter.”
http://inhabitat.com/new-co2-sand-bricks-are-2-5-times-stronger-than-concrete/
Fascinating how a material such as sand that is so simple can be re engineered to be stronger than concrete,and the idea of applying it to diaster areas as quick shelters .