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Experimental investigation on the erodibility and slaking of glacial till.

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Τίτλος: Experimental investigation on the erodibility and slaking of glacial till.
Συγγραφείς: Shamkhalchian, Alireza1 (AUTHOR) Alireza.Shamkhalchian@umanitoba.ca, Blight, Brodie Lane1 (AUTHOR), Clark, Shawn P.1 (AUTHOR)
Πηγή: Canadian Journal of Civil Engineering. 2025, Vol. 52 Issue 12, p2245-2259. 15p.
Θεματικοί όροι: *Erosion, *Flood control, *Liming of soils, *Structural failures, *Shearing force, *Glacial drift, *Infrastructure (Economics), *Channels (Hydraulic engineering)
Περίληψη: This study investigates glacial till erosion and the impact of slaking—soil disintegration upon water immersion—critical for projects like the Lake St. Martin Outlet Channel in Manitoba, Canada. Using a hydraulic flume, 48 erosion tests on intact glacial till revealed that non-slaked till consistently exhibited critical shear stress exceeding 13 Pa, often beyond the 17 Pa limit of the apparatus. In contrast, slaked till had a critical shear stress below 2 Pa, indicating significantly higher erodibility. The slaking threshold, determined by drying samples to increasing matric suction levels before immersion, ranged from 4 to 400 Pa, depending on sample density and clay content. Slowly saturated samples showed no slaking, while lime stabilization effectively mitigated slaking, suggesting it as a viable erosion control method. These findings enhance understanding of glacial till behavior and support improved infrastructure design and management in flood control projects. [ABSTRACT FROM AUTHOR]
Βάση Δεδομένων: Academic Search Index
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DbLabel: Academic Search Index
An: 189711621
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PubTypeId: academicJournal
PreciseRelevancyScore: 1473.09606933594
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Experimental investigation on the erodibility and slaking of glacial till.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Shamkhalchian%2C+Alireza%22">Shamkhalchian, Alireza</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Alireza.Shamkhalchian@umanitoba.ca</i><br /><searchLink fieldCode="AR" term="%22Blight%2C+Brodie+Lane%22">Blight, Brodie Lane</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Clark%2C+Shawn+P%2E%22">Clark, Shawn P.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Canadian+Journal+of+Civil+Engineering%22">Canadian Journal of Civil Engineering</searchLink>. 2025, Vol. 52 Issue 12, p2245-2259. 15p.
– Name: Subject
  Label: Subject Terms
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  Data: *<searchLink fieldCode="DE" term="%22Erosion%22">Erosion</searchLink><br />*<searchLink fieldCode="DE" term="%22Flood+control%22">Flood control</searchLink><br />*<searchLink fieldCode="DE" term="%22Liming+of+soils%22">Liming of soils</searchLink><br />*<searchLink fieldCode="DE" term="%22Structural+failures%22">Structural failures</searchLink><br />*<searchLink fieldCode="DE" term="%22Shearing+force%22">Shearing force</searchLink><br />*<searchLink fieldCode="DE" term="%22Glacial+drift%22">Glacial drift</searchLink><br />*<searchLink fieldCode="DE" term="%22Infrastructure+%28Economics%29%22">Infrastructure (Economics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Channels+%28Hydraulic+engineering%29%22">Channels (Hydraulic engineering)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study investigates glacial till erosion and the impact of slaking—soil disintegration upon water immersion—critical for projects like the Lake St. Martin Outlet Channel in Manitoba, Canada. Using a hydraulic flume, 48 erosion tests on intact glacial till revealed that non-slaked till consistently exhibited critical shear stress exceeding 13 Pa, often beyond the 17 Pa limit of the apparatus. In contrast, slaked till had a critical shear stress below 2 Pa, indicating significantly higher erodibility. The slaking threshold, determined by drying samples to increasing matric suction levels before immersion, ranged from 4 to 400 Pa, depending on sample density and clay content. Slowly saturated samples showed no slaking, while lime stabilization effectively mitigated slaking, suggesting it as a viable erosion control method. These findings enhance understanding of glacial till behavior and support improved infrastructure design and management in flood control projects. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1139/cjce-2025-0017
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 2245
    Subjects:
      – SubjectFull: Erosion
        Type: general
      – SubjectFull: Flood control
        Type: general
      – SubjectFull: Liming of soils
        Type: general
      – SubjectFull: Structural failures
        Type: general
      – SubjectFull: Shearing force
        Type: general
      – SubjectFull: Glacial drift
        Type: general
      – SubjectFull: Infrastructure (Economics)
        Type: general
      – SubjectFull: Channels (Hydraulic engineering)
        Type: general
    Titles:
      – TitleFull: Experimental investigation on the erodibility and slaking of glacial till.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Shamkhalchian, Alireza
      – PersonEntity:
          Name:
            NameFull: Blight, Brodie Lane
      – PersonEntity:
          Name:
            NameFull: Clark, Shawn P.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 12
              Text: 2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 03151468
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            – Type: volume
              Value: 52
            – Type: issue
              Value: 12
          Titles:
            – TitleFull: Canadian Journal of Civil Engineering
              Type: main
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