Results 31 to 40 of about 19,253 (224)

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

The interaction between railway vehicle dynamics and track lateral alignment [PDF]

open access: yes, 2016
Track geometry deteriorates with traffic flow, thus it needs to be regularly restored using tamping or other method. As the deterioration is mainly in the vertical direction this aspect has been widely studied and models for its analysis developed ...
Cencen Gong   +3 more
core   +1 more source

Rail Track Maintenance Planning: An Assessment Model [PDF]

open access: yes, 2000
In Australia, railway track maintenance costs comprise between 25-35 percent of total freight train operating costs. Track maintenance planning models have been shown to reduce maintenance costs by 5 to 10 percent though improved planning.
Ferreira, Luis   +2 more
core   +2 more sources

Metabolic and cometabolic degradation of herbicides in the fine material of railway ballast [PDF]

open access: yes, 2006
Microbial degradation of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron) and mineralization of 4-chloro-2-methylphenoxyacetic acid (MCPA) were studied in soil samples taken from the ballast layers of three Swedish railway embankments. The degradation of
Börjesson, Elisabet   +3 more
core   +1 more source

Railroad ballast behavior in triaxial compression tests with and without geogrid [PDF]

open access: yesMATEC Web of Conferences, 2019
This paper highlights recent laboratory studies at Emperor Alexander I St. Petersburg State Transport University, using large-scale cylindrical triaxial apparatus, which helped quantify the geogrid performance in railway ballast.
Petriaev Andrei, Ganchits Victor
doaj   +1 more source

Development of a whole life cycle cost model for electrification options on the UK rail system [PDF]

open access: yes, 2016
Projects to deliver Overhead Line Equipment (OLE) electrification on the UK rail infrastructure system presents technical challenges which the rail industry in Britain have not traditionally had to consider.
Baguley, Paul   +2 more
core   +1 more source

Geophysical characterization of derelict coalmine workings and mineshaft detection: a case study from Shrewsbury, United Kingdom [PDF]

open access: yes, 2009
A study site of derelict coalmine workings near Shrewsbury, United Kingdom was the focus for multi‐phase, near‐surface geophysical investigations. Investigation objectives were: 1) site characterization for remaining relict infrastructure foundations, 2)
Cassidy, NJ   +8 more
core   +2 more sources

Stress–dilatancy relationship for railway ballast [PDF]

open access: yesStudia Geotechnica et Mechanica, 2018
Abstract Knowledge of the mechanical behaviour of ballast is very important for designing a railway track, especially for high-speed lines. The monotonic drained triaxial tests of scaled and fouled ballast presented in literature were analysed using the Frictional State Theory.
openaire   +2 more sources

Comparative Evaluation of Railway Ballast Degradation

open access: yesFUOYE Journal of Engineering and Technology, 2022
Ballast bed is one of the most important components of ballasted railway track system. Over a period of service, it undergoes axial deformation due to the accumulation of train cyclic loading.   However, there has not been a universally accepted method of evaluating ballast degradation, hence, this study focused on comparing two most common methods ...
Mohammed, Ashiru   +3 more
openaire   +2 more sources

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