Λεπτομέρειες βιβλιογραφικής εγγραφής
| 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] |
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