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JNC TJ8400 2001-017, 25 Pages, 2001/02
JNC-TJ8400-2001-017.pdf:0.68MB
The report concerns the measurement of thermal conductivity and specific heat of suplied sedimental rock B and Funyu rock. The method of measurement of these properties was done with the method which was developed at 1997 and improved much in its accuracy by the present author et al. The porosity of sedimental rock B is 0.55, which is deduced from the density of rock (the porosity deduced from the difference between dry and water filled conditions is 0.42) and the shape and size of pores in rock are much different. Its thermal conductivity is 0.238 W/mK in dry and 1.152W/mK in water filled conditions respectively, while the thermal conductivity of bentonite is 0.238W/mK in dry and 1.152W/mK in water saturated conditions. The difference of thermal conductivity between dry and water saturated conditions is little different in sedimental rock B and bentonite at same porosity. The porosity of Funyu rock is 0.26 and the shape and size of pores in the rock are uniform. Its thermal conductivity is 0.914W/mK in dry and 1.405W/mK in water saturated conditions, while the thermal conductivity of bentonite is 0.606W/mK in dry and 1.591W/mK in water saturated conditions respectively. The correlation estimating thermal conductivity of rocks was derived based on Fricke correlation by presuming rocks as a suspension.
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JNC TJ8400 2000-017, 74 Pages, 2000/02
JNC-TJ8400-2000-017.pdf:1.71MB
The report concerns the improvement of the method measuring thermal conductivity of buffer materials using a thermistor probe and the measurement of thermal conductivity of compacted bentonites and mixtures of bentonite and silica sand using the proposed method measuring thermophysical properties. The method measuring thermal conductivity is improved in accuracy and the apparatus is improved so as to measure easily with more short time. The calculated values of the conventional correlations predicting thermal conductivity of bentonite and mixture were compared with the exising and present data of thermal conductivity of bentonites and mixtures. The correlation proposed by Sakashita and Kumada can predict the best fitted values with the data of the bentonites and Fricke and Bruggeman correlations are fitted with the data for the mixtures with practical accuracy.
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JNC TJ8400 99-065, 28 Pages, 1999/02
The report concerns the measurement of thermal conductivity of compacted bentonite and its mixture with silica sand using a proposed point source method and the evaluation of conventional correlations predicting thermal conductivity of mixtures. The calculated values of the conventional correlations was compared with the exising and present data of thermal conductivity of mixtures. Fricke correlation and Bruggeman correlation are fitted with the data with practical accuracy.
*; Kano, Shigeki; *; *; *; *; *
PNC TN944 71-05, 301 Pages, 1971/03
Three sodium test loops (General Purpose Test Loop, Material Development Test Loop and Activated Materials test Loop) and some attached test apparatus are installed in the Sodium Technology Development Laboratory. In this report the general descriptions, the design philosophies and the progress of construction of the above-mentioned are described.