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{{Short description|Physical scale model tested in a large geotechnical centrifuge}}
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[[File:Geotechnical centrifuge at the University of California, Davis..png|thumb|{{convert|9|m|ft|adj=mid|-radius|0}} geotechnical [[centrifuge]] at the University of California, Davis]]
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===Reason for model testing on the centrifuge===
Geotechnical materials such as soil and rock have non-linear mechanical properties that depend on the effective confining stress and stress history. The centrifuge applies an increased "gravitational" [[acceleration]] to physical models in order to produce identical self-weight stresses in the model and prototype. The one to one scaling of stress enhances the similarity of geotechnical models and makes it possible to obtain accurate data to help solve complex problems such as [[earthquake]]-induced liquefaction, soil-structure interaction and underground transport of pollutants such as dense non-aqueous phase liquids. Centrifuge model testing provides data to improve our understanding of basic mechanisms of deformation and failure and provides benchmarks useful for verification of [[numerical model]]s.
===Scaling laws===
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* [http://www.issmge.org/ International Society for Soil Mechanics and Geotechnical Engineering]
* [https://web.archive.org/web/20090409030828/http://www.asce.org/asce.cfm American Society of Civil Engineers]
[[Category:Tests in geotechnical laboratories]]
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