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A New Calibration Equation for Predicting Water Contents With TDR

TDR의 함수비 예측을 위한 새로운 보정방정식

Minwoo Song1
,
Daehyeon Kim2*
,
Chanyong Choi3
송 민우1
,
김 대현2*
,
최 찬용3
1Graduate Student, Department of Civil Engineering, Chosun Univ.
2Associate Professor, Department of Civil Engineering, Chosun Univ.
3Senior Researcher, High Speed Railway Research Division, Korea Railroad Research Institute
*교신저자. *Corresponding Author. 
30 March 2015. pp. 59-65
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Abstract

The objective of the study is to verify a new calibration equation of dry density and water contents with TDR. Since the traditional calibration equation was proposed, some research to develop a new calibration equation has been conducted by several researchers. As traditional calibration equation is difficult to be applied for loose soil and fine-grained soil at high water contents, this study developed a new calibration equation. Thus, this study introduces a new calibration equation and its applicability by comparing TDR test results with conventional test results. Based on the analyses, the calibration equation for water content has large error. A new calibration equation was proposed and it showed more than 95% accuracy for estimating water content of soil.

Keywords
TDR
Calibration Equation
Dry Density
Water Contents

TDR을 이용한 흙의 건조밀도와 함수비의 새로운 보정 방정식을 검증하기 위해 본 연구를 수행하였다. 기존의 보정 방정식이 제안되고 몇몇 연구자들에 의해 새로운 보정 방정식을 개발하는 연구가 진행되고 있다. 기존의 보정 방정식이 함수비가 높은 세립토와 느슨한 토질에서는 적용되기 어려워 새로운 보정 방정식을 개발하였다. 이에 따라 본 연구에서는 새로운 보정 방정식을 소개하고 기존의 실험과 비교해 새로운 보정방정식의 국내지반과의 적용성을 검토를 수행하였다. 그 결과 함수비의 보정방정식에 오차가 발생하여 함수비의 새로운 보정방정식을 개발하였고, 개발한 보정방정식을 검토한 결과 95%이상의 정확도를 보여준다.

References
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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 14
  • No :1
  • Pages :59-65
  • Received Date : 2015-03-12
  • Revised Date : 2015-03-24
  • Accepted Date : 2015-03-25
  • DOI :https://doi.org/10.12814/jkgss.2015.14.1.059
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