Numerical simulation of a water infiltration test on a proposed backfill material in nuclear waste repositories
Abhishek Rawat (Ruhr-Universität Bochum)
Anne Catherine Dieudonne (TU Delft - Geo-engineering)
Wiebke Baille (Ruhr-Universität Bochum)
Frederic Collin (Université de Liège)
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Abstract
A water infiltration test was numerically simulated using the finite element method. The modified Barcelona Basic Model and the double-structure water retention model was used for the numerical analysis. A methodology is presented for parameter identification and calibration purpose. The experimental results highlighted the porosity redistribution and hydration-induced heterogeneity along the hydration-path. The simulation results successfully captured the moisture migration in the soil sample. A comparison between the measured and predicted total stress values revealed the influence of interfacial friction between the soil sample and cell wall.
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