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NEESR-II: Biological Improvement of Sands for Liquefaction Prevention and Damage Mitigation

Project funded by:   NSF - 0830182 (2008)

PI: Jason De Jong,
Co-PIs: Ross Boulanger(UC Davis) , Douglas Nelson(UC Davis)
Description: The project vision is to evaluate and establish the potential of a bio-mediated ground improvement process to increase soil resistance to liquefaction triggering and to reduce the consequences if liquefaction does occur in the surrounding soil. We will investigate the dimensions and characteristics of bio-treatment zones beneath structures founded on mat and spread footing foundations that are required to minimize permanent differential settlements due to earthquakeinduced liquefaction. Analysis of this broader problem will enable the findings to also be applicable to other ground improvement methods that produce stiffer, stronger zones of cemented/bonded soils, such as permeation and jet grouting, and deep soil mixing.

Project Links

NEES Hub: http://nees.org/warehouse/project/953