A ballasted railway track system comprises several components among which steel rails, rail fasteners, timber, steel or concrete sleepers, granular ballast, sub-ballast, and subgrade materials are the main parts. Railway track systems are constructed to provide a smooth and safe running surface for passenger or freight trains. They are designed to sustain the force of lateral, longitudinal and ...

The bearing capacity of the phyllite soil subgrade can be greatly improved by red clay, but water stability modified is still poor. Hence, blended has been found to unsuitable for construction high-speed railways. This paper proposes an innovative scheme, adding appropriate amounts cement and clay concurrently, improve soil, which achieves a higher immediately after compaction, while also solvi...

1. The determination of the influence of temperature on the velocity of a photochemical reaction is always of importance. This is particularly true when the mechanism of the reaction is unknown, as in the present instance of the bleaching of visual purple. The usefulness of determining the temperature coefficient lles in this. Photochemical reactions have low temperature coefficients.near unity...

1. The determination of the influence of temperature on the velocity of a photochemical reaction is always of importance. This is particularly true when the mechanism of the reaction is unknown, as in the present instance of the bleaching of visual purple. The usefulness of determining the temperature coefficient lles in this. Photochemical reactions have low temperature coefficients.near unity...

1. The determination of the influence of temperature on the velocity of a photochemical reaction is always of importance. This is particularly true when the mechanism of the reaction is unknown, as in the present instance of the bleaching of visual purple. The usefulness of determining the temperature coefficient lles in this. Photochemical reactions have low temperature coefficients.near unity...

One of the efficient techniques to improve the behavior of the paved road under traffic loads is implementing the geosynthetic material in the sub-base or the soil under the road. In the past years, many researches have been done about this topic, but the study on the effect of soil/load conditions on the performance of the rehabilitated paved road by geogrid in order to investigate the effecti...

Slab track structures become deformed under the effects of differential subgrade settlement. According to properties China Railway Track System (CRTS) II slab on a subgrade, three-dimensional (3D) coupled model based both discrete element method (DEM) and finite difference (FDM) was developed. The were simulated using FDM DEM, respectively. verified. deformation contact forces gravel grains in ...

Subgrade filling of high-speed railway will cause additional settlement and deformation existing lines.In this paper,using the finite element analysis platform (Taxis 2D) considering line itself, This paper analyzes impact new old subgrade lap type layer filled lesson on implementation subgrade. The results illustrate following points:(1) Compared with different overlapping surface types, those...