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Unformatted text preview: existing 285 kPa) that this soil at this depth can withstand before failure? 4. An unconfined compression test was conducted on a soft clay. The specimen was trimmed from an undisturbed tube sample and was 35 mm in diameter and 80 mm tall. The specimen reached failure after 11 mm of axial deformation, at which time the axial load was 14.3 N. Calculate the unconfined compressive strength and the undrained shear strength of the specimen. Axial (total) stress at failure should be calculated as per Bardet, page 417: σ = F A c where F = the axial force, and A c = current specimen crosssectional area = A i /(1  ε ), where A i = initial specimen crosssectional area and ε = axial strain at failure. 5. Define overconsolidation ratio (OCR). (Section 4.4) 6. List some examples of geologic factors that contribute to a clay being overconsolidated. (Section 4.4)...
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This note was uploaded on 09/13/2010 for the course CE 467L taught by Professor Rechenmacher during the Spring '10 term at USC.
 Spring '10
 Rechenmacher
 Geotechnical Engineering

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