Mobile QR Code QR CODE : Journal of the Korean Society of Civil Engineers
Title Application of Temperature-compensated Resistivity Probe in the Field
Authors 정순혁 ; 윤형구 ; 이종섭
Page pp.117-125
ISSN 10156348
Keywords electrical resistivity;temperature change;penetration test;temperature compensation;전기비저항;온도 변화;관입 실험;온도보정
Abstract 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).