Abstract
Swedish weight sounding test (thereafter, called WSW test) is widely used as a research method to evaluate the residential sites. Advantage of SWS test is possible to evaluate the bearing capacity of residential sites. In particular, by continuous measurement, it is relatively easy to capture boundary formation. On the other hand, a disadvantage of SWS test is to determine the soil and groundwater level. The determination of the soil is based on the experience of the operator. Only information obtained from the results of the SWS test is insufficient to evaluate the residential ground. Suppose that if it is possible to incorporate the determination method of the soil by electrical resistivity using SWS test holes, a lot of information will be gained. As an ideal way, the electrical logging method by the electrode to the SWS test hole, is effective. As a basic research, the authors attempted to clarify the evaluation method of soil fine fraction content by using the electrical resistivity using a sample soil of 56 types of laboratory experiments. We also revealed the size effect of the measurement hole provided in the soil gives to the electrode diameter. Further, as situ testing by filling the pores of the natural ground potassium chloride solution was to verify the validity of the estimate equation by the electrical resistivity.
