In situ grouting of low-level burial trenches with a cement-based grout at Oak Ridge National Laboratory
A technology being evaluated for use in the closure of one of the low-level radwaste burial grounds at ORNL is trench stabilization using a cement-based grout. To demonstrate the applicability and effectiveness of this technology, two interconnecting trenches in SWSA 6 were selected as candidates for in situ grouting with a particulate grout. The primary objective was to demonstrate the increased trench stability (characterized by trench penetration tests) and the decreased potential for leachate migration (characterized by hydraulic conductivity tests) following in situ injection of a particulate grout into the waste trenches. Stability against trench subsidence is a critical issue. For example, construction of impermeable covers to seal the trenches will be ineffectual unless subsequent trench subsidence is permanently suspended. A grout composed of 39% Type 1 Portland cement, 55.5% Class F fly ash, and 5.5% bentonite mixed at 12.5 lb/gal of water was selected. Before the trenches were grouted, the primary characteristics relating to physical stability, hydraulic conductivity, and void volume of the trenches were determined. Their physical stability was evaluated using soil-penetration tests.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10145965
- Report Number(s):
- ORNL/TM-11838; ON: DE93012513
- Resource Relation:
- Other Information: DN: Environmental Sciences Division Publication No. 3872; PBD: Jan 1993
- Country of Publication:
- United States
- Language:
- English
Similar Records
Task plan to evaluate the effectiveness of in situ grouting of an ORNL waste burial trench with a cement-based grout
Task plan to evaluate the effectiveness of in situ grouting of an ORNL waste burial trench with a cement-based grout. Environmental Restoration Program
Related Subjects
54 ENVIRONMENTAL SCIENCES
GROUTING
CHEMICAL COMPOSITION
LOW-LEVEL RADIOACTIVE WASTES
GROUND DISPOSAL
CONTAINMENT SYSTEMS
PERFORMANCE
ORNL
HYDRAULIC CONDUCTIVITY
SOILS
RADIOACTIVE WASTE FACILITIES
STABILITY
PORTLAND CEMENT
LEACHING
FLY ASH
BENTONITE
GROUND SUBSIDENCE
052002
540230
WASTE DISPOSAL AND STORAGE
RADIOACTIVE MATERIALS MONITORING AND TRANSPORT