Failures due to soil liquefaction have been a known problem for some time. Fortunately, a new technology developed by Boise State University can help mitigate damage due to this type of earthquake-induced failure.What is liquefaction? Well for those who don't know, it's a phenomenon that occurs when loose, saturated, unconsolidated earth materials lose much of their strength and stiffness due to particular loading conditions and behave more like a viscous liquid. This occurs primarily due to earthquakes and severe loss of strength/stiffness may inhibit the soils from supporting foundations for structures.
Engineers at Boise State University are calling this technique the "Induced Partial Saturation" (IPS) where non-hazardous chemicals are injected into the ground which creates gas bubbles to reduce saturation. According to them, this has worked very well in the laboratory and is currently set to start field trial. The original article is linked below.
Article: United Press International
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