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Soil Strength Determinations from the Cone Penetrometer Test

by Bruce J. Douglas, Earth Technology Corp, Long Beach, CA, USA,
Andrew I. Strutynsky, Earth Technology Corp, Long Beach, CA, USA,
Larry J. Mahar, Earth Technology Corp, Long Beach, CA, USA,
Jeffrey Weaver, Earth Technology Corp, Long Beach, CA, USA,



Document Type: Proceeding Paper

Part of: Civil Engineering in the Arctic Offshore

Abstract:

Geotechnical exploration in offshore Arctic regions often relies upon the electric Cone Penetrometer Test (CPT) because of its speed, economy, data continuity, and general reliability. However, soil samples are not obtained with the CPT method and empiricism guides interpretation of soil properties determined from the test logs. No empirical data base presently exists relating CPT data to properties of Arctic soils. A set of such correlative data is provided including CPT versus soil type and soil undrained strength. Correlations between these properties of Arctic soils and CPT end bearing, side friction, dynamic pore pressure, and pore pressure dissipation are provided and briefly compared with correlations typically seen in non-Arctic regions. Conclusions are that general Arctic soil types and undrained strengths may be assessed using electric Cone Penetrometer Test data.

Subject Headings: Penetration tests | Soil strength | Soil properties | Measuring instruments | Soil classification | Dynamic pressure | Subsurface investigation | Arctic

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