Abstract
The air intrusion method based on the capillary model was produced to measure the distribution of soil void diameter. In the present paper, the void diameter distribution measured by air intrusion method is compared with the one estimated from moisture characteristic curve. As a result, it is shown that the shape and range of void diameter distributions by air intrusion method become more uniform and more narrow than the distributions by moisture characteristic curve, respectively, and that the mean void diameters by air intrusion method correspond to 90% of that by moisture characteristic, with consideration of the connecting relationship between both curves, and so on.
