Separation of grain size distribution for application of self-filtration criteria in suffusion assessment

To, H.D., and Scheuermann, A. (2014) Separation of grain size distribution for application of self-filtration criteria in suffusion assessment. In: Proceedings of the 7th International Conference on Scour and Erosion. pp. 121-127. From: ICSE 2014: 7th International Conference on Scour and Erosion, 2-4 December 2014, Perth, WA, Australia.

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Suffusion is one major reason for dysfunctions of earth dams and embankments. Suffusion as a self-filtration process occurs when loose grains are mobilised and transported through a series of pores interconnected by pore constrictions formed by the skeleton. For the assessment of suffusion, the grain size distribution is divided into two parts: (i) skeleton, which transfers the load and forms the basic soil skeleton; and (ii) loose grains, which can be mobilised and removed by seepage flow. To date, most suffusion assessment methods based on self-filtration criteria assume that there is a sharp boundary in grain size distribution between soil skeleton and loose grains fraction. This paper suggests a newself-filtration criterion for suffusion assessment which was developed on a numerical approach on the grain scale. The major difference to existing criteria is the introduction of a smooth boundary between the skeleton and loose grain fraction. The new method has been tested with data from some experimental studies.

Item ID: 46000
Item Type: Conference Item (Research - E1)
ISBN: 978-1-138-02732-9
Funders: University of Queensland, Australian Research Council (ARC)
Projects and Grants: ARC Discovery Project (DP120102188)
Date Deposited: 10 Oct 2016 02:33
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering @ 100%
SEO Codes: 87 CONSTRUCTION > 8702 Construction Design > 870201 Civil Construction Design @ 100%
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