Abstract
This article describes centrifuge tests that show two methods, one using prefabricated vertical drains, the other colloidal silica grout, that can withstand liquefaction during seismic events. The applications are especially relevant to areas where development has already occurred, since they wouldn't disturb existing structures. The process of liquefaction during seismic events is described. A diagram illustrates the centrifuge model. Details of the materials' performance are various levels of seismic disturbance are given. The test is designed to achieve the rapid deformation that occurs in seconds during an earthquake. Silica gel's properties are described, as well as its behavior during the disturbance. Additional full-size field tests of both applications are planned for the future, including a test that simulates an earthquake over a small area by means of a specially equipped truck.
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