Abstract
The mercury intrusion porosimetry method covers the determination of the pore volume and the pore size distributions of rock specimen with the range from 7.4μm to 0.0037μm. An apparatus, procedure and calculation are briefly explained and some observations in Shirahama sandstone are definitely introduced. Blank test for rigorous measurement is necessary to evaluate the precise pore distribution in rock specimen, experimental error of data acquisition and low reliability due to a defective dilatometer are reported here. The method which guess the hydraulic conductivity using the obtained pore size distributions and its examples are shown representatively. The calculated and the obtained experimentally hydraulic conductivity of Shirahama sandstone are in good harmony.
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