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Title: Hydraulic conductivity and moisture/density relationships of candidate packing material

Hydraulic conductivity and moisture/density relationships of candidate packing material Laboratory experiments have been completed to provide moisture/density relationship and hydraulic conductivity physical property data for packing materials. Both moisture/density relationship and hydraulic conductivity tests were performed using packing materials consisting of bentonite clay and crushed basalt rock. Moisture/density relationship tests were performed on 20:80, 25:75, 50:50, 75:25, and 100:0 (wt.%) bentonite/basalt samples using the modified protor test. A set of moisture content versus dry density curves were generated. A typical trend of higher achievable dry density at higher basalt content was indicated due to the difference in specific gravity of basalt and bentonite. Hydraulic conductivity tests were run on 25:75 (wt.%) bentonite/basalt samples over a density range of 1.45 to 2.03 g/cm{sup 3}. Test results indicate a decrease of hydraulic conductivity as a function of both temperature and hydraulic gradient. The data gathered are applicable to both Engineered Barriers and Repository Seals Development. 9 refs., 22 figs., 11 tabs.
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Publication Date:
OSTI Identifier:OSTI ID: 5461391
Report Number(s):RHO-BWI-TI-203
ON: TI90003415; TRN: 89-032263
DOE Contract Number:AC06-77RL01030
Resource Type:Technical Report
Research Org:Rockwell International Corp., Richland, WA (USA). Rockwell Hanford Operations
Sponsoring Org:DOE/RW
Country of Publication:United States
Language:English
Subject: 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; BASALT; DENSITY; MOISTURE; BENTONITE; ELECTRIC CONDUCTIVITY; COMPARATIVE EVALUATIONS; HIGH-LEVEL RADIOACTIVE WASTES; RADIOACTIVE WASTE DISPOSAL; COMPILED DATA; DATA ANALYSIS; DEMONSTRATION PROGRAMS; HANFORD RESERVATION; HYDROLOGY; MASS TRANSFER; MATERIALS TESTING; MATHEMATICAL MODELS; PERFORMANCE; RADIOACTIVE WASTE MANAGEMENT; SITE CHARACTERIZATION; TEMPERATURE GRADIENTS; CLAYS; DATA; ELECTRICAL PROPERTIES; IGNEOUS ROCKS; INFORMATION; MANAGEMENT; MATERIALS; NATIONAL ORGANIZATIONS; NUMERICAL DATA; PHYSICAL PROPERTIES; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; ROCKS; TESTING; US DOE; US ERDA; US ORGANIZATIONS; VOLCANIC ROCKS; WASTE DISPOSAL; WASTE MANAGEMENT; WASTES 052002* -- Nuclear Fuels-- Waste Disposal & Storage; 054000 -- Nuclear Fuels-- Health & Safety; 053000 -- Nuclear Fuels-- Environmental Aspects; 990200 -- Mathematics & Computers