发明名称 |
Electrically measuring soil dry density |
摘要 |
The object of the Electrical Density Gauge (EDG) invention is to provide a low cost, portable, non-nuclear, and rugged field-use device that measures dry density in soils that have been constructed for use as road-beds and building foundations. This data is used to ensure the quality control of the constructed foundation. The electrical properties of soil are measured at a radio frequency using probes driven into the soil. To calibrate EDG, certain algorithms of these electrical properties are related to physically measured wet densities and unit weights of water for a plurality of calibration test spots. Correlation regressions are found, that are used to convert values of the electrical properties measured at unknown field test spots into values of dry density.
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申请公布号 |
US6963205(B2) |
申请公布日期 |
2005.11.08 |
申请号 |
US20030644393 |
申请日期 |
2003.08.18 |
申请人 |
LUNDSTROM JOHN W;ANDERSON DENNIS;STRALEY DAVE;EHNI WILLIAM;WORD DARRELL R |
发明人 |
LUNDSTROM JOHN W.;ANDERSON DENNIS;STRALEY DAVE;EHNI WILLIAM;WORD DARRELL R. |
分类号 |
G01N33/24;(IPC1-7):G01R27/26 |
主分类号 |
G01N33/24 |
代理机构 |
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主权项 |
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地址 |
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