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Internal instability in soils : a critical review of the fundamentals and ramifications
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Dassanayake, S. M., Mousa, A., Ilankoon, I. M. S. K. and Fowmes, G. J. (2022) Internal instability in soils : a critical review of the fundamentals and ramifications. Transportation Research Record: Journal of the Transportation Research Board, 2676 (4). pp. 1-26. doi:10.1177/03611981211056908 ISSN 0361-1981.
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Official URL: https://doi.org/10.1177/03611981211056908
Abstract
Seepage induced fine particles migration that leads to a change in hydraulic conductivity of a soil matrix is referred to as internal instability. This could jeopardize the structural integrity of the soil matrix by initiating suffusion (or suffosion): a form of internal erosion. Susceptibility to suffusion has been studied mostly under extreme laboratory conditions to develop empirical design criteria, which are typically based on the particle size distribution. The physics governing the process has not been comprehensively uncovered in the classical studies due to experimental limitations. The mainstream evaluation methods often over-idealize the suffusion process, holding a probabilistic perspective for estimating constriction sizes and fines migration. Prospective studies on constitutive modelling techniques and modern computational techniques have allowed a more representative evaluation and deeper insight into the problem. Recent advancements in the sensing technologies, visualisation and tracking techniques have equally enriched the quality of the gathered data on suffusion. This paper sets out to present the long-standing knowledge on the internal instability phenomenon in soils. An attempt is made to pinpoint ambiguities and underscore research gaps. The classical empirical studies and modern visualising techniques are integrated with particle-based numerical simulations to strengthen the theoretical understanding of the phenomenon.
| Item Type: | Journal Article | |||||||||
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| Subjects: | S Agriculture > S Agriculture (General) | |||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | |||||||||
| Library of Congress Subject Headings (LCSH): | Soil erosion, Soils, Seepage, Hydraulic gradient, Internal erosion, Dam failures | |||||||||
| Journal or Publication Title: | Transportation Research Record: Journal of the Transportation Research Board | |||||||||
| Publisher: | SAGE | |||||||||
| ISSN: | 0361-1981 | |||||||||
| Official Date: | 1 April 2022 | |||||||||
| Dates: |
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| Volume: | 2676 | |||||||||
| Number: | 4 | |||||||||
| Page Range: | pp. 1-26 | |||||||||
| DOI: | 10.1177/03611981211056908 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Reuse Statement (publisher, data, author rights): | Posted ahead of print. Dassanayake, S. M., Mousa, A., Ilankoon, I. M. S. K. and Fowmes, G. J. (2021) Internal instability in soils : a critical review of the fundamentals and ramifications. Transportation Research Record: Journal of the Transportation Research Board (in Press) pp. xx-xx. Copyright © 2021 National Academy of Sciences: Transportation Research Board. Reprinted by permission of SAGE Publications. DOI: https://doi.org/10.1177/03611981211056908 Users who receive access to an article through a repository are reminded that the article is protected by copyright and reuse is restricted to non-commercial and no derivative uses. The opinions, findings and conclusions expressed in this publication are those of the author(s) and not necessarily those of the Florida Department of Transportation or the U.S. Department of Transportation | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| Description: | Reference number: No. 21-00171R1 |
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| Date of first compliant deposit: | 13 October 2021 | |||||||||
| Date of first compliant Open Access: | 13 October 2021 | |||||||||
| RIOXX Funder/Project Grant: |
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