Georgia Agapoulaki - Academia.edu (original) (raw)
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Papers by Georgia Agapoulaki
Passive stabilization is a novel technique for mitigating the risk of seismic liquefaction in the... more Passive stabilization is a novel technique for mitigating the risk of seismic liquefaction in the non-cohesive foundation soil of existing structures. It entails the low-gradient injection of colloidal silica in the soil pores, a stabilizer material which transforms into a firm gel after a well-controlled time. This gelation enhances the mechanical response of the soil skeleton - pore fluid system. The microscopic mechanism of improvement has not yet been established, a fact prohibiting the formulation of constitutive models. This study explores the possibility of using existing constitutive models for simulating the response of stabilized sands. A bounding surface plasticity model for sands (NTUA-SAND) is used herein for this purpose, after appropriate re-calibration on the basis of published element test results on stabilized sand. Then, the efficiency of this modeling approach is explored through comparison with results from dynamic centrifuge tests. © 2014 Taylor & Francis Group, London
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Numerical Methods in Geotechnical Engineering IX, 2018
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Journal of Materials in Civil Engineering
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Geotechnical Research, 2016
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Passive stabilization is a novel technique for mitigating the risk of seismic liquefaction in the... more Passive stabilization is a novel technique for mitigating the risk of seismic liquefaction in the non-cohesive foundation soil of existing structures. It entails the low-gradient injection of colloidal silica in the soil pores, a stabilizer material which transforms into a firm gel after a well-controlled time. This gelation enhances the mechanical response of the soil skeleton - pore fluid system. The microscopic mechanism of improvement has not yet been established, a fact prohibiting the formulation of constitutive models. This study explores the possibility of using existing constitutive models for simulating the response of stabilized sands. A bounding surface plasticity model for sands (NTUA-SAND) is used herein for this purpose, after appropriate re-calibration on the basis of published element test results on stabilized sand. Then, the efficiency of this modeling approach is explored through comparison with results from dynamic centrifuge tests. © 2014 Taylor & Francis Group, London
Bookmarks Related papers MentionsView impact
Numerical Methods in Geotechnical Engineering IX, 2018
Bookmarks Related papers MentionsView impact
Journal of Materials in Civil Engineering
Bookmarks Related papers MentionsView impact
Geotechnical Research, 2016
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact