Calibration of water content reflectometer in Rocky Mountain arsenal soil

dc.contributor.advisorZornberg, Jorge G.en
dc.contributor.committeeMemberEl Mohtar, Chadi S.en
dc.creatorTang, Yucaoen 2009en
dc.description.abstractThis paper describes how water content reflectometers (WCRs) were analyzed to develop a calibration equation. Time domain reflectometry (TDR) technique is the most prevalent method in in-situ moisture monitoring; and WCR is a type of low frequency TDR sensors, which is sensitive to soil type. Developing soil-specific calibration and investigating different environmental effects on WCR calibration is important. This study focused on investigation of the soil dry density and temperature effects on WCR calibration in RMA soil. Two series of tests to develop soil-specific calibration with dry density and temperature offset were conducted. Results from testing program showed that WCR response was positive related to volumetric water content, dry density, and temperature. Equations were developed to illustrate the response-density-temperature-moisture relation. Application to a field site was also presented to illustrate the difference in volumetric water contents obtained by using manufacturer method and the calibration procedure drawn in this paper.en
dc.description.departmentCivil, Architectural, and Environmental Engineeringen
dc.subjectwater content reflectometeren
dc.subjecttime domain reflectometryen
dc.subjectvolumetric water contenten
dc.subjectdielectric constanten
dc.subjectsoil dry densityen
dc.titleCalibration of water content reflectometer in Rocky Mountain arsenal soilen