#Key words rock cycles crack#

Based on the experimental observations, frost-heaving pressure evolution law and damage mechanism of jointed rock masses are analyzed. In these stages, the maximum frost-heaving pressure is observed to emerge at the early stage of the freeze-thaw cycle. The measurements indicate that under freeze-thaw cycles, the initiation of frost-heaving pressure is critical, which is followed by an explosion, stability, and ablation stages. With the sensors, the change of frost-heaving pressure in the joint under cyclic process is continuously monitored. This study aims to investigate the use of a novel laboratory testing method, i.e., membrane pressure sensors in the joint, to demonstrate the impact of cyclic frost-thaw on jointed rocks.

However, the accumulated freeze-thaw effects are precisely the leading cause of rock mass deterioration and damage in severe cold regions. N2 - Existing research on rock freeze-thaw mainly focuses on a single freeze-thaw process, while little attention is paid to the cumulative effect of cyclic freeze-thaw on rock mass joints. T2 - a focus on impact of freeze–thaw cycles T1 - Deterioration of non-persistent rock joints

#Key words rock cycles crack#

In essence, the deterioration of freeze-thaw cycles on jointed rock masses is mainly due to crack propagation caused by the frost-heaving pressure.', Also, the pressure has a positive linear relationship with the geometric size of the joint. For example, the peak frost-heaving pressure increases exponentially with the decrease of temperature and decreases exponentially with the increase of freeze-thaw cycles. In essence, the deterioration of freeze-thaw cycles on jointed rock masses is mainly due to crack propagation caused by the frost-heaving pressure.Ībstract = 'Existing research on rock freeze-thaw mainly focuses on a single freeze-thaw process, while little attention is paid to the cumulative effect of cyclic freeze-thaw on rock mass joints.

Existing research on rock freeze-thaw mainly focuses on a single freeze-thaw process, while little attention is paid to the cumulative effect of cyclic freeze-thaw on rock mass joints.