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Laboratory and Field Evaluation of Cone Penetrometers

by Tom Lunne, Norwegian Geotechnical Inst, Norway,
Terje Eidsmoen, Norwegian Geotechnical Inst, Norway,
Don Gillespie, Norwegian Geotechnical Inst, Norway,
Jonathan D. Howland, Norwegian Geotechnical Inst, Norway,



Document Type: Proceeding Paper

Part of: Use of In Situ Tests in Geotechnical Engineering

Abstract:

Cone penetrometers from 8 organizations have been studied by performing laboratory tests and field tests. The testing show that pore pressure and temperature zero shift affect significantly uncorrected cone resistance and sleeve friction. The magnitude of the measured pore pressure depends on the location of the porous filter. By correcting for temperature zero shift and pore pressure effects, one may significantly reduce the differences in the cone resistances derived from the different cones. Differences in sleeve friction values are also reduced by the corrections, but not as much.

Subject Headings: Penetration tests | Pore pressure | Field tests | Thermal properties | Temperature effects | Measuring instruments | Load and resistance factor design

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