The properties of railway ballast material are affected by the local geologies and climatic
environments from which the parent rock is sourced. These factors can make it challenging …

Railway ballast performance is dictated by a complex mix of mechanical properties. These
effect its performance at the particle level for example in terms of particle degradation, but …

The disposal of waste tyre rubber (WTR) is an environmental challenge, and a significant
amount of waste is sent to landfills. However, modern railway tracks depend on rubber …

This paper presents a numerical method to investigate the critical-state behaviors of the soft-
rigid mixture via DEM simulation. First, according to a series of laboratory tests of sand …

The development of reliability theory has led to the setting of tasks requiring consideration of
the efficiency and functional safety of technical objects of transport over the life cycle. The …

This study presents a numerical investigation of the cyclic behavior of ballast mixed with
crumb rubber (CR) using the discrete element method (DEM). To this aim, a series of box …

To investigate the stress concentration at the interface between crushed ballast and soil
subgrade, this study developed a coupling program of discrete element method (DEM) and …

Parent rock strength and crumb rubber modification are two critical mechanical parameters
that significantly decide the ballast layer degradation subjected to train dynamic loading …

Scrap tyres are used to produce tyre-derived aggregates (TDA), which can be used as fill
material, backfill material, drainage layers, and vibration-damping material, among other …

Tunnels may be constructed in a pair undercrossing existing geotechnical structures
exposed to cyclic loading. Such construction changes the stress state in the ground in …