Investigation of the Ability of Filters to Stop Erosion through Cracks in Dams
The ability of a filter to stop erosion through cracks in the core of a embankment dam requires that the filter be graded so that it will restrain movement of particles from the core, and that the filter be truly cohesionless, so that it will not crack even when subjected to the same types of deform...
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ndltd-VTETD-oai-vtechworks.lib.vt.edu-10919-110862020-09-29T05:30:09Z Investigation of the Ability of Filters to Stop Erosion through Cracks in Dams Park, Youngjin Civil Engineering Filz, George M. Gutierrez, Marte S. Mitchell, James K. Duncan, James Michael Brandon, Thomas L. Embankment dams erosion and piping filters cracks in dams The ability of a filter to stop erosion through cracks in the core of a embankment dam requires that the filter be graded so that it will restrain movement of particles from the core, and that the filter be truly cohesionless, so that it will not crack even when subjected to the same types of deformations that cause cracks in the core. To achieve resistance to cracking, most current filter criteria require that the filter should contain no more than 5% of material finer than the #200 sieve, and that this fine material should be non-plastic. This research study was conducted to investigate whether there specifications do, in fact, result in filters that can be relied upon to slump, fill cracks, and prevent interval erosion in embankment dams. The research study involved filter erosion tests using a 4-inch diameter device and a 12-inch square device, and "sand castle" tests to investigate the tendency for candidate filters to slump when immersed in water. These tests showed that conventional filter criteria  no more than 5% fines, and fines that are non-plastic, are conservative. The research study showed that even filters with 5% of highly plastic fines are able to slump, fill cracks, and prevent erosion. Ph. D. 2011-08-22T18:52:45Z 2011-08-22T18:52:45Z 2003-12-12 2003-12-28 2005-01-08 2004-01-08 Dissertation etd-12282003-162636 http://hdl.handle.net/10919/11086 http://scholar.lib.vt.edu/theses/available/etd-12282003-162636 B4_Chapter4.pdf B3_Chapter3.pdf B2_Chapter2.pdf B1_Chapter1.pdf C3_vita.pdf C2_AppendixB.pdf C1_AppendixA.pdf B9_Reference.pdf B8_Chapter8.pdf B7_Chapter7.pdf B6_Chapter6.pdf B5_Chapter5.pdf A3_Acknowledgement.pdf A2_abstract.pdf A1_Title.pdf A4_Toc.pdf In Copyright http://rightsstatements.org/vocab/InC/1.0/ ETD application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf Virginia Tech |
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Embankment dams erosion and piping filters cracks in dams |
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Embankment dams erosion and piping filters cracks in dams Park, Youngjin Investigation of the Ability of Filters to Stop Erosion through Cracks in Dams |
description |
The ability of a filter to stop erosion through cracks in the core of a embankment dam requires that the filter be graded so that it will restrain movement of particles from the core, and that the filter be truly cohesionless, so that it will not crack even when subjected to the same types of deformations that cause cracks in the core.
To achieve resistance to cracking, most current filter criteria require that the filter should contain no more than 5% of material finer than the #200 sieve, and that this fine material should be non-plastic. This research study was conducted to investigate whether there specifications do, in fact, result in filters that can be relied upon to slump, fill cracks, and prevent interval erosion in embankment dams.
The research study involved filter erosion tests using a 4-inch diameter device and a 12-inch square device, and "sand castle" tests to investigate the tendency for candidate filters to slump when immersed in water. These tests showed that conventional filter criteria  no more than 5% fines, and fines that are non-plastic, are conservative. The research study showed that even filters with 5% of highly plastic fines are able to slump, fill cracks, and prevent erosion. === Ph. D. |
author2 |
Civil Engineering |
author_facet |
Civil Engineering Park, Youngjin |
author |
Park, Youngjin |
author_sort |
Park, Youngjin |
title |
Investigation of the Ability of Filters to Stop Erosion through Cracks in Dams |
title_short |
Investigation of the Ability of Filters to Stop Erosion through Cracks in Dams |
title_full |
Investigation of the Ability of Filters to Stop Erosion through Cracks in Dams |
title_fullStr |
Investigation of the Ability of Filters to Stop Erosion through Cracks in Dams |
title_full_unstemmed |
Investigation of the Ability of Filters to Stop Erosion through Cracks in Dams |
title_sort |
investigation of the ability of filters to stop erosion through cracks in dams |
publisher |
Virginia Tech |
publishDate |
2011 |
url |
http://hdl.handle.net/10919/11086 http://scholar.lib.vt.edu/theses/available/etd-12282003-162636 |
work_keys_str_mv |
AT parkyoungjin investigationoftheabilityoffilterstostoperosionthroughcracksindams |
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