Centrifuge Modeling of a Constructed Reservoir Embankment: Antiliquefaction Performance Improvement Using Nanoparticles
Publication: Journal of Performance of Constructed Facilities
Volume 32, Issue 6
Abstract
Antiliquefaction performance improvement for developed sites beneath existing structures has drawn increasing public attention to meet stricter requirements of seismic protection. Liquefaction mitigation using nanoparticles is a novel countermeasure because of its low environmental disturbance and greater environmental friendliness. This paper reports a centrifuge test to evaluate the effectiveness of laponite (the representative nanoparticle) for liquefaction mitigation. A constructed reservoir embankment foundation was selected as the prototype and the laponite-treated model was carried out with a centrifugal acceleration of . Additionally, the viscosity of laponite suspensions was measured to determine the appropriate concentration range and curing time. A similar test with an untreated model was conducted beforehand as a comparison. The subsequent research results showed that the generation of excess porewater pressure was suppressed and both lateral displacements and settlement were reduced in the laponite-treated model versus the untreated model. This paper provides experimental data beyond the elemental scale to support the beneficial effects of laponite on the antiliquefaction performance improvement of the developed sites.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant Nos. 41625011 and 41372355).
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Published In
Journal of Performance of Constructed Facilities
Volume 32 • Issue 6 • December 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Feb 6, 2018
Accepted: May 23, 2018
Published online: Aug 20, 2018
Published in print: Dec 1, 2018
Discussion open until: Jan 20, 2019
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