Abstract
The distribution of soil void diameter is an important factor to express soil void structure, to select grout materials and filter materials. Air intrusion method to measure the distribution of soil void diameter is suggested. For the method based on the capillary tube model, it is required the relationship between pressure of air intruded into saturated soil and flow rate of air passed. In the present paper, the adaptability of the method is verified on the measurement of the distributions of void diameter of both sand samples and artificial capillary tube model. As a result, it is shown that the method is fairly good to estimate sand void diameter in comparison with the one by mercury intrusion method.
