Complex Permittivity of Adobe Verses Frequency and Water Content

被引:0
|
作者
Price, Steven R. [1 ]
Donohoe, J. Patrick [2 ]
Price, Stanton R. [1 ]
Fairley, Josh [1 ]
Robert, Stephanie [1 ]
机构
[1] US Army Corps Engineers, Engineer Res & Dev Ctr, Vicksburg, MS 39180 USA
[2] Mississippi State Univ, Bagley Coll Engn, Elect & Comp Engn Dept, Starkville, MS 39762 USA
关键词
adobe electromagnetic properties; moisture dependence; through wall radar; wall water content; wall dielectric properties; DIELECTRIC-PROPERTIES; BUILDING-MATERIALS; MOISTURE; CONCRETE; RADAR;
D O I
10.3390/rs16183445
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The complex permittivity of adobe is measured using a coaxial probe system verses frequency (500 MHz to 7 GHz) and water content (0% to 6%). Measurements are performed using adobe samples collected from abode bricks. The geotechnical properties of the compressed earth bricks are characterized by (1) percentage of gravel, sands, and fines; (2) Atterberg limits; and (3) grain-size distribution. The variation in adobe complex permittivity verses frequency is measured at discrete levels of water content using small adobe samples exposed to controlled levels of constant humidity in an environmental chamber. The typical water content profile verses depth for an adobe brick is also determined.
引用
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页数:10
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