Abstract
The effect of salt concentration of test water on the diffusion properties of rock was studied in the study. The diffusion coefficients were determined by tracer method using nonsorbing {sup 36}Cl-isotope as a tracer and 1 M NaCl solution as water. The results were compared with the results of a previous study where diffusivities were determined by tracer techniques using 0.0044 M NaCl solution as water and by electrical resistivity method, where the samples were saturated with 1 M NaCl solution. Two different rock types, gneiss around a slickenside fracture and granite around a partially filled carbonate fracture, were used in the studies. The apparent diffusivities measured in this study did not deviate essentially from each other. The effective diffusivities, on the contrary, depended clearly on the salt concentration of water used to saturate the rock samples. The porosities determined by water saturation method were considerably higher than the porosities evaluated from the diffusion coefficients.
Citation Formats
Uusheimo, K, and Muurinen, A.
Effect of sodium chloride concentration on diffusivity in rock matrix.
Finland: N. p.,
1990.
Web.
Uusheimo, K, & Muurinen, A.
Effect of sodium chloride concentration on diffusivity in rock matrix.
Finland.
Uusheimo, K, and Muurinen, A.
1990.
"Effect of sodium chloride concentration on diffusivity in rock matrix."
Finland.
@misc{etde_10104086,
title = {Effect of sodium chloride concentration on diffusivity in rock matrix}
author = {Uusheimo, K, and Muurinen, A}
abstractNote = {The effect of salt concentration of test water on the diffusion properties of rock was studied in the study. The diffusion coefficients were determined by tracer method using nonsorbing {sup 36}Cl-isotope as a tracer and 1 M NaCl solution as water. The results were compared with the results of a previous study where diffusivities were determined by tracer techniques using 0.0044 M NaCl solution as water and by electrical resistivity method, where the samples were saturated with 1 M NaCl solution. Two different rock types, gneiss around a slickenside fracture and granite around a partially filled carbonate fracture, were used in the studies. The apparent diffusivities measured in this study did not deviate essentially from each other. The effective diffusivities, on the contrary, depended clearly on the salt concentration of water used to saturate the rock samples. The porosities determined by water saturation method were considerably higher than the porosities evaluated from the diffusion coefficients.}
place = {Finland}
year = {1990}
month = {Jul}
}
title = {Effect of sodium chloride concentration on diffusivity in rock matrix}
author = {Uusheimo, K, and Muurinen, A}
abstractNote = {The effect of salt concentration of test water on the diffusion properties of rock was studied in the study. The diffusion coefficients were determined by tracer method using nonsorbing {sup 36}Cl-isotope as a tracer and 1 M NaCl solution as water. The results were compared with the results of a previous study where diffusivities were determined by tracer techniques using 0.0044 M NaCl solution as water and by electrical resistivity method, where the samples were saturated with 1 M NaCl solution. Two different rock types, gneiss around a slickenside fracture and granite around a partially filled carbonate fracture, were used in the studies. The apparent diffusivities measured in this study did not deviate essentially from each other. The effective diffusivities, on the contrary, depended clearly on the salt concentration of water used to saturate the rock samples. The porosities determined by water saturation method were considerably higher than the porosities evaluated from the diffusion coefficients.}
place = {Finland}
year = {1990}
month = {Jul}
}