New Method for Evaluating Liquefaction Potential

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Abstract
A new method of indexing the grain and aggregate properties of sand using electrical parameters is described. Correlations are established between these parameters and relative density, Dr, cyclic stress ratio, τ/σo′, and K2max. An electrical probe, used to predict these parameters from in‐situ electrical measurements, is described. Evaluations are made of Dr and τ/σo′, which are compared with values measured independently from controlled laboratory tests. Reasonable agreement is found between predicted and measured values. The potential applicability of the electrical probe in the field is shown by evaluation of liquefaction and nonliquefaction at sites affected by the 1906 San Francisco, Niigata and Tangshan earthquakes.