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G MS THESIS_final version_Maxim Prokudin.pdf - Digital Repository ...

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54The entire process, as it can be seen from Figure 24, produced a relatively undisturbedsample of desired length and diameter, where the unit weight of the sample was estimated byweighing the sample and the sample dimensions were measured via calipers. Once thevolumetric parameters were recorded, the sample was wrapped in a foil wrap and, thus, themoisture content of the sample was preserved. The test bed loess unit weight and moisturecontent results for all test stages are provided in Table 9, Table 12 and Table 14 and Table 16Unconfined Compression Triaxial TestIt is important to outline another benefit of having to obtain a sample of the specified lengthand diameter. By using the ELE International Triaxial Machine, the produced 72 mm by 140mm sample was axially loaded and undrained shear strength values were evaluated (SeeFigure 25).(a) (b) (c)Figure 25: 72 mm x 140 mm sample (a) placed in unconfined compression triaxialchamber, (b) and (c) samples after failureHaving one UC test sample for every 305 mm pier and two UC samples for every 610 mmpier, the total number of 100 samples was tested. UC tests were performed according withASTM D2166-00. Once the prepared samples were axially loaded to a point of failure andthe load-displacement data was collected, the samples were further broken down and a smallportion was collected for the moisture content evaluation. The moisture content testing of thesample was performed by utilizing a microwave oven, where the sample was incrementally

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