Abstract
Liquefaction resistance of soil dramatically increases with decreasing degree of saturation (Sr). This paper proposed a technique for preparing fully saturated model ground used for centrifuge tests. The technique was verified through a series of test on sands with different grain size. It was found that the air entrapped in the funicular saturation zone during the saturation process degrades degree of saturation. The high degree of saturation can be achieved by applying centrifugal acceralation during the process. The saturation process in centrifuge with an aid of vaccume pressure achieved Sr of 99.3% for sand with considerable amount of fines. A technique of high accuracy measurement of Sr is also developed.
