협재층 탐지를 위한 선단비저항 콘Cone Resistivity Penetrometer for Detecting Thin-Layered Soils
- Other Titles
- Cone Resistivity Penetrometer for Detecting Thin-Layered Soils
- Authors
- 윤형구; 정순혁; 김래현; 이종섭
- Issue Date
- 2010
- Publisher
- 한국지반공학회
- Keywords
- Cone tip resistance; Electrical resistivity; Field test; Friction sleeve; Smaller diameter cone; Thin-layered soil
- Citation
- 한국지반공학회논문집, v.26, no.8, pp.15 - 25
- Indexed
- KCI
- Journal Title
- 한국지반공학회논문집
- Volume
- 26
- Number
- 8
- Start Page
- 15
- End Page
- 25
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/118116
- ISSN
- 1229-2427
- Abstract
- The thin-layered sand seam in clay affects the soil behavior. Although the standard cone penetrometer (A: 10 cm2) have been used to evaluate the thin-layered soil, the smaller diameter cone penetrometer have been commonly recommended because of the high resolution. The purpose of this study is the development and application of the Cone Resistivity Penetrometer (CRP), which detects qc, fs, and electrical resistivity at cone tip for the evaluation of thin layered soils. Two sizes of the CRP are developed for the laboratory and field test. The projected areas of CRP for the laboratory and field tests are 0.78 cm2 (d: 1.0 cm) and 1.76 cm2 (d: 1.5 cm), repectively. The length of friction sleeve is designed in consideration of ratio of the projected area to the friction sleeve area. The application tests are carried out by using the artificially prepared thin-layered soils in the laboratory. In addition, the field tests are conducted at the depth of 6 to 15 m in Kwangyang. In the laboratory test, the measured electrical resistivity and cone tip resistance detect the soil layers. Moreover, in the field test the CRP investigates the three thin-layered soils. This study suggests that the CRP may be a useful tool for detecting thin-layered in soft soils.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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