Scale Effects in Cone Penetration Tests

by Dario Cardoso de Lima, Univ Federal de Vicosa, Vicosa, Brazil,
Mehmet T. Tumay, Univ Federal de Vicosa, Vicosa, Brazil,



Document Type: Proceeding Paper

Part of: Geotechnical Engineering Congress?1991

Abstract:

A field testing program was undertaken to examine the existence of scale effects between a miniature 1.27 cm² and 15 cm² cross-section and the 'reference' 10 cm² cross-section electronic friction cone penetrometer. Five sites in the State of Louisiana were selected for the field testing program, encompassing a wide range of sandy, silty and clayey soils. Compacted embankments and natural grade soils were investigated. Soundings 9.5 m deep were performed in three natural ground sites and two highway embankments. At each chosen site, five soundings apiece were executed with the 15 cm² and the 'reference' cone penetrometers, and three soundings with the 1.27 cm² miniature cone. This paper presents the statistical evaluation of the scale effects and the recommended corrective measures for proper cross-correlation.

Subject Headings: Penetration tests | Field tests | Scale effect | Clays | Compacted soils | Statistics | Sandy soils | Louisiana | United States

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