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A dynamic cone penetrometer for measuring soil penetration resistance

Permanent URL:
http://handle.nal.usda.gov/10113/13042
File:
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Abstract:
Recognition of the importance of soil compaction is increasing, but instrument cost, measurement repeatability, and data interpretation limit its measurement on agricultural and rangelands. The dynamic penetrometer described here follows American Society of Agricultural Engineers standards, but replaces the proving ring with a strike plate, a shaft extension, and a sliding hammer. The penetrometer cone is pushed into the soil by successive hammer blows. Penetration resistance is calculated as the work by the soil needed to stop cone movement divided by the penetration distance. The work by the soil is defined as the kinetic energy of the hammer when it impacts the strike plate. Construction cost is approximately $100 to $150. The standard drop height and hammer mass ensure measurements are consistent between operators.
Author(s):
Herrick, J.E. , Jones, T.L. , Soil Science Society of America.
Note:
Includes references
Source:
Soil Science Society of America journal July/Aug 2002. v. 66 (4)
Language:
English
Year:
2002
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.