  Rock weathering is a common phenomenon in most engineering applications, such
as underground storage or geothermal energy. This work offers a discrete
element modelization of the problem considering cohesive granular material and
debonding effect. Oedometer conditions are applied during the weathering and
the evolution of the coefficient of lateral earth pressure, a proxy of the
state of stress, is tracked. Especially, the influence of the degree of
cementation, the confining pressure, the initial value of k0 and the history of
load are investigated. It has been emphasized that the granular media aims to
reach an attractor configuration. And the grain reorganization occurring is
divided into two main phenomena: the collapse of the unstable chain forces
(stable only thanks to the cementation) and the softening of the grains.
