Results 21 to 30 of about 18,753 (176)

Testing of Hungarian aggregates for railway ballast according to MSZ EN 13450: 2003 [PDF]

open access: yes, 2007
In June 2003 Hungary accepted the European Standard for Aggregates for Railway Ballast (MSZ EN 13450: 2003). The European norm, compared with the Hungarian Standard, also includes a new examination method called the micro-Deval method for railway ballast
Gálos, Miklós, Kárpáti, László
core   +1 more source

A CFD-DEM Based Numerical Investigation of Debris Flow on Ballasted Railway Track [PDF]

open access: yesE3S Web of Conferences, 2023
Debris flow occurring in mountainous areas can cause issues to railway tracks. Debris flow may cause large track deformation and even track breakage and introduce server ballast fouling afterwards. After the flash of a debris flow, the fine particles can
Gong Yufeng, Qian Yu
doaj   +1 more source

Laboratory Evaluation of Railway Ballast Consolidation by the Non-Destructive Testing

open access: yesCommunications, 2019
The property of railway track to resist the irreversible deformation for a long-term operational loading considerably depends on the ballast layer. The ballast layer is the element of a railway track whose mechanical properties and state are formed in ...
Mykola Sysyn   +4 more
doaj   +1 more source

Assessing the Role of Longitudinal Variability of Vertical Track Stiffness in the Long-Term Deterioration [PDF]

open access: yes, 2016
The performance of the railway system in terms of dynamic loading is depending mainly on the track support conditions. Usually, the track stiffness is used as the main parameter to describe the support conditions and is defined as the ratio of the load ...
Bezin, Yann   +2 more
core   +1 more source

Verification of the Design Parameters Based on the Control Diagnostic of the Deformation Resistance of the Sub-Ballast Upper Surface

open access: yesCivil and Environmental Engineering, 2023
Based on the quality control diagnostics of the used base layers on the interstation railway section Palárikovo - Nové Zámky, the article analyzes the achieved results of static load tests that were carried out on the plane of the sub-ballast upper ...
Ižvolt Libor   +3 more
doaj   +1 more source

SPECIAL LABORATORY TESTING METHOD FOR EVALUATION PARTICLE BREAKAGE OF RAILWAY BALLAST MATERIAL

open access: yesNauka ta progres transportu, 2018
Purpose. There are special, standardized laboratory test methods to evaluate railway ballast particle breakage; they are the Los Angeles and the Micro-Deval abrasion test.
S. Fischer, A. Németh
doaj   +1 more source

Optimization of Subgrade Structure Parameters of Ballasted Track Passenger Dedicated Line

open access: yesShanghai Jiaotong Daxue xuebao, 2021
In order to improve the force condition of ballasted railway subgrade structure and reduce maintenance cost, it is necessary to study the influence of subgrade structure parameters on subgrade dynamic response under train load.
WANG Wei   +3 more
doaj   +1 more source

How to create a full-wave GPR model of a 3D domain of railway track bed? [PDF]

open access: yes, 2017
Ground-penetrating radar (GPR) investigations of railway track beds are becoming more important nowadays in civil engineering. The manufacturing of representative full-scale scenarios in the laboratory environment for the creation of databases can be a ...
Alani, Amir   +6 more
core   +1 more source

Prediction of Lifespan of Railway Ballast Aggregate According to Mechanical Properties of it

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2017
As the railway lifespan is the main criterion for selection of the aggregate for ballast and for planning the maintenance of the railroad, it is important to define the relationship between the particle load resistant characteristics and a lifetime of ...
Vaidas Ramūnas   +4 more
doaj   +1 more source

Modelling Experimental Measurements of Fluid Flow through Railway Ballast

open access: yesFluids, 2022
The flooding of railway ballasts can cause extensive damage. This process has been the subject of several experimental investigations. In the present work, a relatively easy to implement approach to modelling this fluid flow is presented.
Raed Alrdadi, Michael H. Meylan
doaj   +1 more source

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