온도보상형 전기저항 프로브의 현장 적용성 평가

The practical use of the electrical resistivity, which can makes the acquirement of the high resolution data in specific area, is increased in order to obtain a reasonable data for a ground investigation. The objective of this study is development of TRPF(Temperature-compensated Resistivity Probe for Field test), and an application in the field test for obtaining a reliable electrical resistivity value about considering the temperature effects. Temperature sensor is attached at 15㎜, 30㎜, 90㎜ below from the cone tip in consideration with the results of temperature transient process of cone probe and safety, and the angle of cone tip is 60° for geometrical reason and minimizing the disturbance during the penetration test. Diameter of the cone probe is equally 35.7㎜ and penetration rate is 2 ㎝/sec for a comparison with standard cones such as CPT and SPT, and others. The temperature change is instantly observed around 4℃ when touching the ground, and the comparing results among the other cones indicates that the temperature compensation should be conducted in the ground survey using the electrical resistivity. This study shows that the necessity of temperature effects compensation during penetration test through the development and field verification of TRPF(Temperature-compensated Resistivity Probe for Field test).