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U.S. Department of Energy
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Task plan to evaluate the effectiveness of in situ grouting of an ORNL waste burial trench with a cement-based grout

Technical Report ·
DOI:https://doi.org/10.2172/5340895· OSTI ID:5340895
This task will demonstrate the feasibility of using an in situ grouting technique with a particulate-grout formulation as a closure action to stabilize waste trenches in Solid Waste Storage Area (SWSA) 6. It also supports technology development for closure of other SWSAs. A particulate grout will be formulated using cement-bentonite and fly ash from a coal-fired power plant. The grout solids will be dry-blended, mixed with water, and injected (using {similar to}5 to 10 lb/in.{sup 2} pressure) into five injection wells per trench. After 28 days for setting, soil penetration resistance and hydraulic conductivity measurements will be repeated for comparison to pregrouting measurements. The primary objective of this task is to demonstrate the feasibility and effectiveness of the in situ injection of a particulate grout into waste burial trenches. Effectiveness is defined here as increased trenched stability (characterized by trench penetration resistance tests) and decreased potential for leachate migration (characterized by hydraulic conductivity tests).
Research Organization:
Oak Ridge National Lab., TN (United States). Environmental Sciences Div.
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC05-84OR21400
OSTI ID:
5340895
Report Number(s):
ORNL/ER-24; ON: DE92012588
Country of Publication:
United States
Language:
English