Laboratory characterization of soil internal erosion

The performance of subsequent structures which are intended to limit seepage, can be impacted by internal erosion of sensitive granular materials under fluid flow. Present days, suffusion research is the main area of study. Suffusion is the process by which coarser soil particles constructions allow...

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Main Author: Deng, Hao
Other Authors: Fei Xunchang
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2023
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Online Access:https://hdl.handle.net/10356/172818
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1728182023-12-29T15:34:25Z Laboratory characterization of soil internal erosion Deng, Hao Fei Xunchang School of Civil and Environmental Engineering xcfei@ntu.edu.sg Engineering::Civil engineering::Geotechnical The performance of subsequent structures which are intended to limit seepage, can be impacted by internal erosion of sensitive granular materials under fluid flow. Present days, suffusion research is the main area of study. Suffusion is the process by which coarser soil particles constructions allow finer soil particles to be designated by seepage flow, often occurring in tandem with seepage flow over time. Through the application of suitable techniques for the preparation and placing of soil specimens together with proper saturation procedures, the feature of the internal erosion test would be examined and evaluated. After conducting a series of laboratory tests, we discovered that the internal clogging would happen in dense instances, that breaking the clogging would be more difficult in cases with a smaller void ratio, and that the permeability of the pre-clogging is larger than that of post-clogging. In contrast, suffusion will happen in loose instances, and permeability will not change in either the pre-suffusion or within suffusion stage. In conditions with higher void ratios, soil specimens have better permeability and are more internally stable. In general, the critical value of hydraulic gradient and pressure which is equivalent to 2 and 3kPa respectively that don’t change when internal clogging of suffusion occurs whether is in dense or loose cases. Bachelor of Engineering (Civil) 2023-12-26T05:56:11Z 2023-12-26T05:56:11Z 2023 Final Year Project (FYP) Deng, H. (2023). Laboratory characterization of soil internal erosion. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/172818 https://hdl.handle.net/10356/172818 en GE-14 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Civil engineering::Geotechnical
spellingShingle Engineering::Civil engineering::Geotechnical
Deng, Hao
Laboratory characterization of soil internal erosion
description The performance of subsequent structures which are intended to limit seepage, can be impacted by internal erosion of sensitive granular materials under fluid flow. Present days, suffusion research is the main area of study. Suffusion is the process by which coarser soil particles constructions allow finer soil particles to be designated by seepage flow, often occurring in tandem with seepage flow over time. Through the application of suitable techniques for the preparation and placing of soil specimens together with proper saturation procedures, the feature of the internal erosion test would be examined and evaluated. After conducting a series of laboratory tests, we discovered that the internal clogging would happen in dense instances, that breaking the clogging would be more difficult in cases with a smaller void ratio, and that the permeability of the pre-clogging is larger than that of post-clogging. In contrast, suffusion will happen in loose instances, and permeability will not change in either the pre-suffusion or within suffusion stage. In conditions with higher void ratios, soil specimens have better permeability and are more internally stable. In general, the critical value of hydraulic gradient and pressure which is equivalent to 2 and 3kPa respectively that don’t change when internal clogging of suffusion occurs whether is in dense or loose cases.
author2 Fei Xunchang
author_facet Fei Xunchang
Deng, Hao
format Final Year Project
author Deng, Hao
author_sort Deng, Hao
title Laboratory characterization of soil internal erosion
title_short Laboratory characterization of soil internal erosion
title_full Laboratory characterization of soil internal erosion
title_fullStr Laboratory characterization of soil internal erosion
title_full_unstemmed Laboratory characterization of soil internal erosion
title_sort laboratory characterization of soil internal erosion
publisher Nanyang Technological University
publishDate 2023
url https://hdl.handle.net/10356/172818
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