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Academic Lectures
CE Seminar Series with Dr. Charles D. Shackelford
Department / Organization: Civil and Environmental Engineering Department
The Role of Diffusion in Environmental Geotechnics - Fri 4/4 11:00 AM in BBW475
Who: Dr. Charles D. Shackelford, PhD, PE, FASCE https://www.engr.colostate.edu/ce/people/charles-shackelford/
What: Continuing the Civil Seminar series, Dr. Shackelford will give the third installment in his geotechnical seminars, "The Role of Diffusion in Environmental Geotechnics
Where: Brown Building W475
When: April 4, 2025, at 11:00 AM MDT.
Abstract: Diffusion of contaminants can play a significant if not dominant role in many applications encountered within the field of environmental geotechnics. The objective of this presentation is to provide an overview of the important role diffusion plays in such applications. The presentation proceeds from a historical perspective, beginning with the recognition in the late 1970s to early 1980s that diffusion may be an important process in assessing contaminant migration through low permeability barriers in waste containment applications. Data from the literature and simplified model simulations are used to illustrate under what conditions diffusion is important, and the significance of diffusion with respect to different barrier components and types of barriers in waste containment applications is illustrated. The barriers considered include natural clays, compacted clay liners, geomembrane liners, geosynthetic clay liners, composite liners, vertical cutoff walls, subaqueous caps for contaminated sediments, and highly compacted bentonite buffers for high level radioactive waste containment....
