Results 101 to 110 of about 18,753 (176)

Job order assignment at optimal costs in railway maintenance [PDF]

, 2013
Tamping is an important part of railway maintenance. Well tamped ballast reduces track irregularities and increases travel safety and comfort. But if the ballast is in a bad condition, the train speed must be restricted, which leads to delays and penalty
Baldi, Mauro Maria, Heinicke, F., Simroth, A., Tadei, Roberto   +3 more
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Microgrid reinforcement of scaled railway ballast

E3S Web of Conferences
Ballasted tracks are predominant on railways worldwide. Previous research on random fibre reinforcement of scaled ballast has shown that flexible polymeric fibres can increase the shear resistance and ductility of the ballast. Owing to the difficulty of testing very coarse materials in standard laboratory apparatus, scaled-down materials have been ...
Rafael Anjos, Victor Neto, Margarida Pinho-Lopes, William Powrie   +3 more
openaire   +1 more source

Performance Evaluation of Nigeria Railway Track Ballast Under Simulated Operational Conditions

Advances in Civil Engineering
Over time, most research on railway track performance has focused mainly on rail and track geometry, with a few considering the damage or degradation occurring at the substructure level.
Stephen Adeyemi Alabi, Thomas Stephen Ijimdiya, Joseph Olasehinde Afolayan, Oladunni Abosede Daramola, Tolulope Abidemi Alabi, Rahman Tunde Agbede, Ayodeji Stanley Olowoselu, Jeffrey Mahachi, Chinwuba Arum   +8 more
doaj   +1 more source

DEVELOPMENT THE METHOD OF THERMOMECHANICAL LOADING MANAGEMENT OF TRIBOLOGICAL CONTACT [PDF]

, 2018
At present, rail transport in connection with the economic situation is very important for solving the problems associated with increasing the efficiency and economy of the railway transport.
HORBUNOV, Nykolai, KOVTANETS, Tatiana, KOVTANETS’, Maksim, NOZHENKO, Elena   +3 more
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Optimum design of composite prestressed concrete girder railway bridges [PDF]

, 2012
This paper deals with the formulation of design optimisation of pretsressed concrete bridges. The bridge is of a slab-on-girder type, hence modeled as an equivalent orthotropic plate.
Al-Nuaimi, A, Mohammad, F, Mohammed, S
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Technological evaluation of stones from the eastern region of the state of São Paulo, Brazil, for railway ballast

Scientific Reports
The correct choice of a stone aggregate for railway ballast is directly related to the stability, safety, efficiency, and maintenance costs of the track. The aggregate must meet several criteria to ensure it is the most appropriate material.
Daniela Tomaz Alves, Rogério Pinto Ribeiro, Gustavo de Castro Xavier, Sergio N. Monteiro, Afonso R. G. de Azevedo   +4 more
doaj   +1 more source

Evaluation of Slate Waste as a Sustainable Material for Railway Sub-Ballast Layers: Analysis of Mechanical Behavior and Performance

Infrastructures
The railway industry is increasingly pressured to adopt sustainable practices, seeking alternatives to virgin natural aggregates that reduce environmental impact and lifecycle costs.
Raphael Lúcio Reis dos Santos, Conrado de Souza Rodrigues, Guilherme de Castro Leiva, Armando Belato Pereira   +3 more
doaj   +1 more source

Wear and Fatigue of Railway Track Caused by Contamination, Sanding and Surface Damage [PDF]

, 2003
The wheel rail contact operates in an arduous environment. Damage to the surface of either component is possible during manufacture, installation, or operation.
Dwyer-Joyce, R.S., Gao, N., Grieve, D.G., Lewis, R.   +3 more
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Comparison of approaches to assessing ballast layer contamination using ground penetrating radar

International Journal of Transportation Science and Technology
The railway ballast layer plays an important role in the functioning of the entire track structure as a whole, provides the connection of the rail-sleeper grid with the roadbed and its stability in the longitudinal and transverse directions.
Vladimir Shapovalov, Vitaly Arkhipov, Maksim Okost, Andrey Morozov   +3 more
doaj   +1 more source

Critical Speed of Ballasted Railway Tracks: Influence of Ballast and Subgrade Degradation

Transportation Geotechnics, 2023
Rakesh Sai Malisetty, Buddhima Indraratna   +1 more
openaire   +1 more source