Browse > Article
http://dx.doi.org/10.7843/kgs.2010.26.8.15

Cone Resistivity Penetrometer for Detecting Thin-Layered Soils  

Yoon, Hyung-Koo (School of Civil, Environmental, and Architectural Engrg., Korea Univ.)
Jung, Soon-Hyuck (School of Civil, Environmental, and Architectural Engrg., Korea Univ.)
Kim, Rae-Hyun (Civil Engrg. Group, POSCO Engrg. & Construction Co., Ltd.)
Lee, Jong-Sub (School of Civil, Environmental, and Architectural Engrg., Korea Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.26, no.8, 2010 , pp. 15-25 More about this Journal
Abstract
The thin-layered sand seam in clay affects the soil behavior. Although the standard cone penetrometer (A: $10cm^2$) 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 $0.78cm^2$ (d: 1.0 cm) and $1.76cm^2$ (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.
Keywords
Cone tip resistance; Electrical resistivity; Field test; Friction sleeve; Smaller diameter cone; Thin-layered soil;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Hird, C. C. and Springman, S. M. (2006), "Comparative performance of $5cm^2$ and $10cm^2$ piezocones in a lacustrine clay", Geotechnique, 56(6), pp.427-438.   DOI   ScienceOn
2 Titi, H. H., Mohammad, L. N. and Tumay, M. T. (2000), "Miniature cone penetration tests in soft and stiff clays", Geotechnical Tesing Journal, ASTM, 23(4), pp.432-443.   DOI   ScienceOn
3 Yoon, H. K., Kim, J. H., Kim, R. and Lee, J. S. (2009), "Electrical Resistivity and Cone Tip Resistance Monitoring by Using Cone Resistivity Penetrometer", Proceedings of the Nineteenth International Offshore and Polar Engineering Conference, Osaka, Japan, pp.168-171.
4 Threadwell, D. D. (1976), "The influence of gravity, prestress, compressibility, and layering on soil resistance to static penetration", Ph.D. thesis, University of California at Berkeley, Berkeley, Calif.
5 Zuidberg, H. M., Hoope, J. ten and Geise, J. M. (1988), "Advances in in-situ measurements", 2nd International Symposium on Field Measurements in Geomechanics, Sakurai, pp.279-291.
6 Horsnell, M. R. (1988), "The use of cone penetration testing to obtain environmental data", In penetration testing in the U.K. Institution of Civil Engineers, Thomas Telford, London, U. K., pp. 289-295.
7 Lambe, T. W. and Whitman, R. V. (1979), "Soil Mechanics", John Wiley & Sons.
8 Lunne, T., Robertson, P. K. and Powell, J. J. M. (1997), "Cone Penetration Testing in Geotechnical Practice", Blakie Academic, Great Britain, London.
9 Roy, M., Tremblay, M., Tavenas, F. and La Rochelle, P. (1982), "Development of Pore Pressures in Quasi-Static Penetration Tests in Sensitive Clay", Canadian Geotechnical Journal, 19(2), pp. 124-138.   DOI   ScienceOn
10 Cho, G. C., Lee, J. S. and Santamarina, J. C. (2004), "Spatial variability in soils: high resolution assessment with electrical needle probe", Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 130(8), pp.843-850.   DOI   ScienceOn
11 De Lima, D. and Tumay, M. T. (1991), "Scale Effects in Cone Penetration Tests", Proceedings, Geotechnical Engineering Congress 1991, ASCE, Boulder, 1, pp.38-51.
12 Hird, C. C., Johnson, P. and Sills, G. C. (2003), "Performance of Miniature Piezocones in Thinly Layered Soils", Geotechnique, 53(10), pp.885-900.   DOI   ScienceOn
13 김준한, 윤형구, 최용규, 이종섭 (2009), "전기비저항 콘 프로브를 이용한 해안 연약 지반의 간극률 산정", 한국지반공학회 논문집, 25(2), pp.45-54.   과학기술학회마을
14 한국지반공학회 (2005), "연약지반", 지반공학 시리즈, 구미서관.
15 Ahmadi, M. M. and Robertson, P. K. (2005), "Thin-layer Effects on the CPT qc Measurement", Canadian Geotechnical Journal, 42(5), pp.1302-1317.   DOI   ScienceOn
16 Campanella, R. G. and Kokan, M. J. (1993), "A new approach to measuring dilatancy in saturated sands", Geotechnical Tesing Journal, ASTM, 16(6), pp.485-495.   DOI
17 Campanella, R. G. and Weemees, I. (1990), "Development and use of an electrical resistivity cone for groundwater contamination studies", Canadian Geotechnical Journal, 27, pp.557-567.   DOI
18 김래현, 윤형구, 이우진, 이종섭 (2008), "광섬유를 이용한 온도 보상형 마이크로콘의 개발", 대한토목학회 논문집 29(4C), pp. 163-174.
19 이종섭, 신동현, 윤형구, 이우진 (2008), "초소형 마이크로콘 관입 시험기의 개발 및 적용", 한국지반공학회 논문집, 24(2), pp.77-86.   과학기술학회마을
20 윤형구, 김준한, 김래현, 최용규, 이종섭 (2008), "CRPT를 이용한 연약지반 협재층 탐지", 2008 지반공학회 가을 학술 발표회, pp.117-125.