The paper presents experimental results obtained from laboratory large-scale 1g experiment. The governing idea of the experiment is the observation of the soil behaviour under the constant load, while the groundwater level is changing in time. We experience a soil wetting-induced collapse due to matrix suctions cancellation even for soil generally described as gravel. The results of the experiments can be easily compared with in-situ results as the experiment satisfies the standard static plate load test conditions. Finally, the obtained results are incorporated into the elastic solution of the layer in the Westergard manner assumptions.
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