Zobrazeno 1 - 8
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pro vyhledávání: '"A. K. Rohrman"'
Autor:
Matthew Motta, Andrew K. Rohrman
Publikováno v:
Behavioural Public Policy. 5:301-317
Few Americans demand that their local policy-makers take action to address the effects of large earthquakes, even in ‘high-risk’ areas. This poses an important political problem. If policy-makers do not perceive a mandate to prepare for catastrop
Publikováno v:
GEOSTRATA Magazine. 23:20-26
Publikováno v:
GEOSTRATA Magazine. 22:26-32
Publikováno v:
Construction and Building Materials. 247:118315
Railway ballast is an important component of the track substructure that provides vertical, lateral, and longitudinal support, increases track resiliency, reduces stress applied to the subgrade, and facilitates the drainage of water away from the tra
Autor:
Andrew K. Rohrman, Carlton L. Ho
Publikováno v:
2018 Joint Rail Conference.
Laboratory tests are commonly used to investigate the performance and behavior of ballast in various conditions. In large part, these investigations use freshly quarried rock prepared to meet gradation requirements of AREMA or similar organizations a
Autor:
Carl L. Ho, Andrew K. Rohrman
Publikováno v:
Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering ISBN: 9789811300103
Railway ballast is an important component of the railroad substructure, providing resistance to forces, distribution of loads to reduce stress on the subgrade, and drainage of water away from the track. To better understand the strength properties an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5078893fca1800ac1516451d65e190c8
https://doi.org/10.1007/978-981-13-0011-0_29
https://doi.org/10.1007/978-981-13-0011-0_29
Publikováno v:
2017 Joint Rail Conference.
The performance of ballasted railway systems is commonly compromised by the infiltration of fine material into the voids of the ballast. This sand and finer grained materials in the ballast is known as fouling. Increased fouling can cause decreases i
Autor:
Andrew K. Rohrman, Carlton L. Ho
Publikováno v:
Transportation Geotechnics. 21:100278
The introduction of fouling, or finer grained material into the voids of railroad ballast is one of the main issues effecting ballast performance. Fouling reduces the ability of ballast to serve it’s main functions, including providing drainage of