EPJ Web Conf.
Volume 249, 2021Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media
|Number of page(s)||4|
|Section||Particle Simulations and Particle-Based Methods|
|Published online||07 June 2021|
Exploring chemo-mechanics of granular material using DEM
Research Scholar, Civil Engineering Department, IIT Kanpur- 208016, India
2 Assistant Professor, Civil Engineering Department, IIT Kanpur- 208016, India
* Corresponding author: firstname.lastname@example.org
Published online: 7 June 2021
Particle Size Distribution (PSD) is one of the prime guiding factors of granular media response. Degradation via weathering is a process, which brings about a gradual shift in the PSD. In nature, chemically sensitive material like calcite undergoes chemo-mechanical degradation bringing about variations in their behaviour. In the present study, an experimental investigation is carried out to get insight into the mechanical response during the coupled chemo-mechanical process. The experiments were carried out at two different rates of dissolutions in a custom made 1D compression mould. From the experiments, it is clear that the higher rate of dissolution reduces the lateral earth pressure more than the lower rate. Discrete Element Method (DEM) analyses the micromechanical process behind the observed response from experiments. The results showed a reduction in lateral stress as soon as the dissolution starts. DEM analysis confirms the competing mechanism between grain size reduction and grain rearrangement as the guiding element for the granular media response.
A video is available at https://doi.org/10.48448/kfwq-wq15
© The Authors, published by EDP Sciences, 2021
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