A simple method for the determination of sensitivity to density changes in sand liquefaction
Open Geomechanics, Volume 2 (2020) , article no. 3, 8 p.

Fully saturated loose coarse-grained soils are known to be prone to liquefaction. Conventional laboratory tests for soil liquefaction include usually cyclic testing in triaxial apparatus. However, such investigations are complicated and time-consuming. The objective of the outlined work is to evaluate the sensitivity of different sands to density change with respect to liquefaction using a relatively simple method. This method enables a fast setup of the tested specimen and a subsequent investigation of the pore water pressure build-up during cyclic shearing within a short time. The results have confirmed a good repeatability of the new method as well as an expected dependence of the pore pressure build-up on initial density. Validation of the method was performed using the results of cyclic triaxial tests. A good agreement between both methods was observed regarding the rate of the pore pressure increase with initial density. Furthermore, it was shown that the initial fabric of soil has a larger impact on the pore pressure build-up during cyclic loading than the relative density.

Received: 2020-01-18
Revised: 2020-06-09
Accepted: 2020-08-28
Published online: 2020-10-06
DOI: https://doi.org/10.5802/ogeo.6
Keywords: Liquefaction, laboratory tests, cyclic shear test, cyclic triaxial test, soil fabric
@article{OGEO_2020__2__A3_0,
     author = {Bacic, Bozana and Herle, Ivo},
     title = {A simple method for the determination of sensitivity to density changes in sand liquefaction},
     journal = {Open Geomechanics},
     publisher = {Alert Geomaterials},
     volume = {2},
     year = {2020},
     doi = {10.5802/ogeo.6},
     language = {en},
     url = {opengeomechanics.centre-mersenne.org/item/OGEO_2020__2__A3_0/}
}
Bacic, Bozana; Herle, Ivo. A simple method for the determination of sensitivity to density changes in sand liquefaction. Open Geomechanics, Volume 2 (2020) , article  no. 3, 8 p. doi : 10.5802/ogeo.6. https://opengeomechanics.centre-mersenne.org/item/OGEO_2020__2__A3_0/

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