Effect of sand overconsolidation and extensive liquefaction on K0

Waleed El-Sekelly, Tarek Abdoun, Ricardo Dobry

    Research output: Contribution to journalConference article

    Abstract

    In the first part of this research, centrifuge model testing was used to investigate the relationship between the coefficient of lateral earth pressure at rest, K0, and overconsolidation ratio, OCR, for clean sand for the whole loading-unloading-reloading cycle. Tactile pressure sensors were used to measure the change in K0 in two saturated centrifuge models conducted on Ottawa sand. A relationship was developed between the change in K0 and OCR both for unloading and reloading conditions. In the second part of this research, the same tactile sensor was used to test the influence of extensive liquefaction on K0. A centrifuge model was subjected to very strong shaking causing extensive liquefaction. Lateral earth pressure was measured before and after liquefaction. It was found that there is a significant reduction on K0 due to extensive liquefaction which explains the increased vulnerability of sandy deposits after liquefaction, as observed by many researchers.

    Original languageEnglish (US)
    Pages (from-to)478-486
    Number of pages9
    JournalGeotechnical Special Publication
    Issue numberGSP 280
    DOIs
    StatePublished - Jan 1 2017
    EventGeotechnical Frontiers 2017 - Orlando, United States
    Duration: Mar 12 2017Mar 15 2017

    Fingerprint

    overconsolidation
    Liquefaction
    liquefaction
    Sand
    Centrifuges
    centrifuge
    sand
    Optical character recognition
    earth pressure
    unloading
    Unloading
    Earth (planet)
    sensor
    Pressure sensors
    vulnerability
    Deposits
    effect
    Sensors
    Testing

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Architecture
    • Building and Construction
    • Geotechnical Engineering and Engineering Geology

    Cite this

    Effect of sand overconsolidation and extensive liquefaction on K0. / El-Sekelly, Waleed; Abdoun, Tarek; Dobry, Ricardo.

    In: Geotechnical Special Publication, No. GSP 280, 01.01.2017, p. 478-486.

    Research output: Contribution to journalConference article

    El-Sekelly, Waleed ; Abdoun, Tarek ; Dobry, Ricardo. / Effect of sand overconsolidation and extensive liquefaction on K0. In: Geotechnical Special Publication. 2017 ; No. GSP 280. pp. 478-486.
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