Collaborate research project with the Institute of Geotechnical Engineering at TU Dresden (Prof. Ivo Herle)
A quick check of the tendency to soil liquefaction or a quick comparison of the liquefaction potential for different soils has so far been problematic as a systematic methodology for laboratory testing is very time-consuming and reserved for specialized laboratories only. In the first phase of this project a simple method (identification test) for a rapid and systematic investigation of the liquefaction tendency of coarse-grained soils has been developed at the Institute of Geotechnical Engineering at TU Dresden. In the second phase, in collaboration with the Chair of Soil Mechanics, Foundations Engineering and Environmental Geotechnics of Ruhr-University Bochum a detailed validation of the identification test based on the results of cyclic triaxial tests is carried out. Furthermore, it will be clarified whether the conventional limit void ratios and the relative density are suitable quantities for the evaluation of the tendency of soils to liquefaction. In this context, the influence of the soil internal structure (sample preparation method) on the soil liquefaction tendency will be examined. Since the liquefaction tendency of a soil is strongly influenced by it’s granulometric properties, it will be clarified whether it is possible, using the identification test, to draw a conclusion on different grain shapes or grain surface roughnesses in case of soils with the same grain size distribution. Furthermore, it will be examined whether the prediction of the soil tendency to liquefaction based on the volumetric behavior in a drained identification test is meaningful. Accompanying the investigations in the identification test, a respective analysis based on cyclic triaxial tests is done.
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Last update: Sep 09, 2022