Hygro-Mole: A Logging Tool for Determining Moisture Content in Environmentally Sensitive Subsurface Zones

[+] Author and Article Information
Mindy L. Weimer

 Louisiana State University, College of Engineering, 3304 CEBA Bldg., Baton Rouge, LA 70803hscons@lsu.edu

W. David Constant

 Louisiana State University, College of Engineering, 3304 CEBA Bldg., Baton Rouge, LA 70803hscons@lsu.edu

J. Energy Resour. Technol 128(1), 44-48 (Aug 04, 2005) (5 pages) doi:10.1115/1.2126985 History: Received June 11, 2004; Revised August 04, 2005

The Hygro-Mole’s success has been proven both in the laboratory and in the Waste-management Education and Research Consortium (WERC) competition. This logging tool is designed to determine the value of low moisture content present in subsurface regions, at very low cost. The Hygro-Mole yields immediate results, and can be calibrated to specifically monitor multiple types of subsurface material. All that is required for the current design is a 0.1m diameter borehole to the point of interest in the subsurface zone for tool access.

Copyright © 2006 by American Society of Mechanical Engineers
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Figure 1

Resultant plots of RH% from laboratory experiment with known moisture contents of sand

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Figure 2

Hygro-mole schematic

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Figure 3

Calibration curves determined from known moisture contents of the core tested at WERC

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Figure 4

The second-estimation rate from the calibration curves from the unknown moisture content data gathered at WERC

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Figure 5

Moisture graph of % moisture versus the diffusion rate from WERC data used to determine moisture content solutions

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Figure 6

95% confidence intervals for correlation of moisture versus slope



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