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Abstract
Title: Properties of Cohesionless Soil Subsequent to Liquefaction and Resedimentation (NEES-2014-0975)
Year Of Curation: 2014
Description: The project will experimentally and numerically investigate the properties of resedimented soil following liquefaction, including void ratio distribution and shear strength. To investigate the properties of cohesionless soil subsequent to liquefaction, a series of coordinated physical model tests, numerical analyses, imaging analyses, and laboratory shear strength tests will be conducted. Physical model testing will include laboratory column testing, small- and large-scale shake table testing, and centrifuge testing. Numerical analyses will include simulations of the impact of non-homogeneities (as revealed by the physical model testing) on shear banding and the undrained shear strength of cohesionless soil, and novel computational fluid dynamics- (CFD-) based analyses of resedimentation of cohesionless soils. Laboratory testing will include shear strength testing on specimens recovered from the physical models, using special techniques to preserve their structure. Imaging will include bright field microscopy (BFM) and computer-aided tomography (CT) scanning of recovered specimens to evaluate their structure prior to and after liquefaction.
Award: http://www.nsf.gov/awardsearch/showAward?AWD_ID=0936421
PIs & CoPIs: Ronaldo Borja, Jeffrey Evans, Edward Kavazanjian
Dates: October 01, 2009 - August 25, 2013
Organizations: Arizona State University, AZ, United States,,Bucknell University, PA, United States,,Stanford University, CA, United States
Facilities: University of California, Davis, CA, United States
Sponsor: NSF - CMMI - 0936421
Keywords: liquefaction
Publications:
Zbigniew David Czupak, "Stabilization and Imaging of Cohesionless Soil Specimens"
"The Impact of Liquefaction on the Microstructure of Cohesionless Soils"
"Undisturbed Sampling of Cohesionless Soil for Evaluation of Mechanical Properties and Micro-structure"