Cone Penetration in Soil Profiling

by Mohsen M. Baligh, (M.ASCE), Assoc. Prof. of Civ. Engrg.; Massachusetts Inst. of Tech., Cambridge, Mass.,
Charles C. Ladd, (F.ASCE), Prof. of Civ. Engrg.; Massachusetts Inst. of Tech., Cambridge, Mass.,
Vitoon Vivatrat, Supervising Geotechnical Engr.; Brian Watt Assocs., Inc., Houston, Tex.; formerly, Research Asst. in Civ. Engrg., Massachusetts Inst. of Tech., Cambridge, Mass.,

Serial Information: Journal of the Geotechnical Engineering Division, 1980, Vol. 106, Issue 4, Pg. 447-461

Document Type: Journal Paper

Discussion: Roy Marius (See full record)


Continuous measurements of the cone resistance, qc, and the penetration pore pressure, u, in two sedimentary clay deposits indicate that quasi-static cone penetration data provide a very reliable method for evaluating soil stratification and variability in these two soils. A comparative analysis of field vane results and qc shows a correlation between shear strength variability and clay desiccation. The degree of scatter in qc and u measurements, and the ratio u/qc offer promising new methods of identifying soil types, detecting small changes in stratification and, possibly, for estimating the overconsolidation ratio of clays.

Subject Headings: Penetration tests | Soil pressure | Clays | Soil strength | Shear strength | Soil analysis | Pressure measurement | Conical bodies

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