Prediction of field compressibility from laboratory consolidation tests of peats and organic soils

Journal Article · Tue Dec 01 04:00:00 EST 1998 · Geotechnical Testing Journal

OSTI ID:316356

Stinnette, P ^[1]

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1. Hillsborough Community Coll., Plant City, FL (United States)

Gibson and Lo (1961) compressibility parameters a and b for an organic soil can be determined from the organic content and the current pressure using the model presented by Gunaratne et al. (1998). These parameters, however, were developed based on results of laboratory one-dimensional consolidation tests and are valid for the K{sub 0} state. Researchers such as Edil et al. (1984) have found that the experimentally determined values of b in particular are larger for field situations. Therefore, the compressibility parameters have to be modified to predict field settlement under surcharges. This paper describes an extended model that addresses this issue and demonstrates how the laboratory-based b value can be corrected for field loading conditions. Finally, results of a full-scale, instrumented field settlement study of organic soil are shown to correlate well with the predictions of the extended model.

• OSTI ID: 316356
• Journal Information: Geotechnical Testing Journal, Journal Name: Geotechnical Testing Journal Journal Issue: 4 Vol. 21; ISSN GTJODJ; ISSN 0149-6115
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
54 ENVIRONMENTAL SCIENCES
COMPRESSIBILITY
FIELD TESTS
MATHEMATICAL MODELS
PEAT
SOIL MECHANICS
SOILS