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A liquefaction surface to describe liquefaction phenomena in unsaturated sandy soils

Mele, Lucia; Lirer, Stefania; Flora, Alessandro


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    "embargo_date": "2020-07-19", 
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    "description": "<p>The energetic interpretation of liquefaction tests indicates that the behavior of unsaturated<br>\nsands can be related to the specific energy spent to liquefaction In this paper, an insight<br>\nis proposed on the role played by the two components of such a specific energy: the specific<br>\nvolumetric energy to liquefaction (Ev,liq) and the specific deviatoric energy to liquefaction (Es,liq).<br>\nIt is argued that Ev,liq (which is nil in saturated soils) can be considered as a state variable to<br>\nquantify the increase of cyclic resistance caused by a reduced degree of saturation, being thus<br>\nconstant along a given cyclic resistance curve. Es,liq is instead related to a specific value of cyclic<br>\nresistance ratio or number of cycles at liquefaction via the value of the volumetric component. In<br>\nfact, for saturated tests (Ev,liq=0) Es,liq is constant for a fixed number of cycles at liquefaction (Nliq).<br>\nFor unsaturated tests, Es,liq increases as Ev,liq increases for a given value of Nliq. The three variables<br>\n(Ev,liq, Es,liq and Nliq) define a &ldquo;liquefaction surface&rdquo; describing the resistance to liquefaction of<br>\nunsaturated soils.</p>", 
    "language": "eng", 
    "title": "A liquefaction surface to describe liquefaction phenomena in unsaturated sandy soils", 
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        "title": "Assessment and mitigation of liquefaction potential across Europe: a holistic approach to protect structures / infrastructures for improved resilience to earthquake-induced liquefaction disasters", 
        "acronym": "LIQUEFACT", 
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    "publication_date": "2019-07-19", 
    "creators": [
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        "affiliation": "University of Napoli Federico II", 
        "name": "Mele, Lucia"
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      {
        "affiliation": "Guglielmo Marconi University, Rome", 
        "name": "Lirer, Stefania"
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      {
        "affiliation": "University of Napoli Federico II", 
        "name": "Flora, Alessandro"
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