DAVID M GEORGE
Engineering in Marlboro, MA
License number
Massachusetts 39448
Issued Date
Aug 16, 1996
Expiration Date
Jun 30, 2018
Type
Civil Engineer
Address
Address
Marlboro, MA 01752
Professional information
Monitoring Soil Compaction
US Patent:
5426972, Jun 27, 1995
Filed:
Apr 20, 1993
Appl. No.:
8/049076
Inventors:
Frank J. Heirtzler - Londonderry NH
Robert L. Cardenas - Framingham MA
David M. George - Marlboro MA
Kenneth A. Pasch - Chicago IL
Daniel R. Deguire - Blackstone MA
Robert L. Cardenas - Framingham MA
David M. George - Marlboro MA
Kenneth A. Pasch - Chicago IL
Daniel R. Deguire - Blackstone MA
Assignee:
Gas Research Institute - Chicago IL
International Classification:
G01N 3324, G01N 2918, G01V 150
US Classification:
73 84
Abstract:
Methods and apparatus for determining whether soil is satisfactorily compacted. An operator delivers impact energy to the soil, and the amount of impact energy transmitted through the soil is repeatedly sensed and stored. A modelling formula, which approximates the variation of the stored amounts of impact energy, is used to generate current and target values for the level of compaction; if the current value equals or exceeds the target value, the soil is considered to be satisfactorily compacted.