Liquefaction Resistance of Two Alluvial Volcanic Soils Sampled by in Situ Freezing

Aging Effects on Small Strain Shear Moduli and Liquefaction Properties of in-situ Frozen and Reconstituted Sandy Soils

“…The resistances of the FSs against liquefaction were obviously higher than those of the RSs for all samples. Hatanaka et al (1985) and many studies have reported the same tendency as obtained in this study. It should be noted again that the liquefaction resistances of the RSCLs were increased signiˆcantly and approached those of the FSs.…”

“…In the laboratory tests, Yoshimi et al (1984Yoshimi et al ( , 1994, Hatanaka et al (1985) and Goto et al (1992) showed that the liquefaction resistance of the in-situ frozen sample was signiˆcantly higher than that of the tube sample as well as a reconstituted sample. The diŠerence in the liquefaction resistances of these samples was due to a disturbance of the tube sample and diŠerence in the aging eŠects between the in-situ frozen sample and the other samples.…”

Effects of Sample Disturbance on Small Strain Characteristics and Liquefaction Properties of Holocene and Pleistocene Sandy Soils

“…For all the samples, the liquefaction resistance of the FSs was much larger than that of the RSs even if their Dr values were similar to each other. These results are similar to those that have been reported by previous studies (e.g., Hatanaka et al, 1985). They suggest that the FSs would have a natural aging eŠect by which the soil structure is strengthened, while the RSs would not have such an eŠect.…”

Liquefaction perspective of soil ageing

“…For a quantitative study on ageing, Leon et al (2006) discussed the timescale of thousands of years or more on the basis of a small number of available data. Yoshimi et al (1984), Goto (1995), Goto et al (1987Goto et al ( , 1992, Hatanaka et al (1985Hatanaka et al ( , 1988, Hori et al (2002) and Nagase et al (1999) employed undisturbed frozen samples, whereas Seki et al (1992) conducted block sampling, to compare the liquefaction resistance of aged soil with laboratoryreconstituted (young) specimens. Mulilis et al (1977) studied several sites to show the increase of liquefaction resistance over thousands of years.…”