Method and device for determining the degree of compaction during ground compaction
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United States of America Patent
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-
Sep 16, 2003
Grant Date -
Jan 10, 2002
app pub date -
Jun 18, 2001
filing date -
Jun 16, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and a device are provided for determining the degree of compaction during ground compaction with a roller or a vibrating plate compactor comprising a top section and a vibrating plate. The method involves determination of one or more amplitude values of the vibration at approximately the excitation frequency of the plate relative to the top section, one or more amplitude values of one or more vibrations of the plate relative to the top section at a maximum of 60% of the excitation frequency, and the quotient of the aforementioned amplitude values as a measure of the current degree of compaction of the ground. The device includes a sensor for non-contact detection of the relative movements between the top section and the vibrating plate or roller.
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