2 Citations (Scopus)

Abstract

Centrifuge model tests were conducted to evaluate the potential for earthquake-induced soil liquefaction mitigation via microbially mediated denitrification (dissimilatory reduction of nitrogen). Desaturation by denitrifying bacteria is the first stage of a two-stage process to increase earthquake-induced liquefaction resistance referred to as microbially induced desaturation and precipitation (MIDP). In the test described herein, denitrification was induced in Ottawa F-65 sand on the 1-m radius centrifuge at the University of California, Davis NHERI/CGM centrifuge. The degree of saturation was monitored during testing by monitoring soil moisture content. After monitoring indicated that significant desaturation had been induced at 1 g by an enriched denitrifying microorganism culture, the model was accelerated to 80 g. Saturation measurements during spin-up provided insight on the influence of steady state pore pressure on biogenic gas desaturation. Cyclic loading during the ultimate centrifuge acceleration of 80 g demonstrated desaturation via MIDP has potential to mitigate earthquake-induced soil liquefaction.

Original languageEnglish (US)
Pages (from-to)117-126
Number of pages10
JournalGeotechnical Special Publication
Volume2018-June
Issue numberGSP 290
DOIs
StatePublished - Jan 1 2018
Event5th Geotechnical Earthquake Engineering and Soil Dynamics Conference: Liquefaction Triggering, Consequences, and Mitigation, GEESDV 2018 - Austin, United States
Duration: Jun 10 2018Jun 13 2018

Fingerprint

Denitrification
Centrifuges
Liquefaction
centrifuge
liquefaction
denitrification
mitigation
Soil liquefaction
Earthquakes
Testing
earthquake
saturation
Monitoring
Pore pressure
Soil moisture
cyclic loading
monitoring
Microorganisms
model test
pore pressure

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Cite this

Centrifuge Model Testing of Liquefaction Mitigation via Denitrification-Induced Desaturation. / Hall, Caitlyn A.; Hernandez, Gabby; Darby, Kathleen M.; van Paassen, Leon; Kavazanjian, Edward; DeJong, Jason; Wilson, Daniel.

In: Geotechnical Special Publication, Vol. 2018-June, No. GSP 290, 01.01.2018, p. 117-126.

Research output: Contribution to journalConference article

Hall, Caitlyn A. ; Hernandez, Gabby ; Darby, Kathleen M. ; van Paassen, Leon ; Kavazanjian, Edward ; DeJong, Jason ; Wilson, Daniel. / Centrifuge Model Testing of Liquefaction Mitigation via Denitrification-Induced Desaturation. In: Geotechnical Special Publication. 2018 ; Vol. 2018-June, No. GSP 290. pp. 117-126.
@article{6750f64cff084f29a065b6f0f91989a0,
title = "Centrifuge Model Testing of Liquefaction Mitigation via Denitrification-Induced Desaturation",
abstract = "Centrifuge model tests were conducted to evaluate the potential for earthquake-induced soil liquefaction mitigation via microbially mediated denitrification (dissimilatory reduction of nitrogen). Desaturation by denitrifying bacteria is the first stage of a two-stage process to increase earthquake-induced liquefaction resistance referred to as microbially induced desaturation and precipitation (MIDP). In the test described herein, denitrification was induced in Ottawa F-65 sand on the 1-m radius centrifuge at the University of California, Davis NHERI/CGM centrifuge. The degree of saturation was monitored during testing by monitoring soil moisture content. After monitoring indicated that significant desaturation had been induced at 1 g by an enriched denitrifying microorganism culture, the model was accelerated to 80 g. Saturation measurements during spin-up provided insight on the influence of steady state pore pressure on biogenic gas desaturation. Cyclic loading during the ultimate centrifuge acceleration of 80 g demonstrated desaturation via MIDP has potential to mitigate earthquake-induced soil liquefaction.",
author = "Hall, {Caitlyn A.} and Gabby Hernandez and Darby, {Kathleen M.} and {van Paassen}, Leon and Edward Kavazanjian and Jason DeJong and Daniel Wilson",
year = "2018",
month = "1",
day = "1",
doi = "10.1061/9780784481455.011",
language = "English (US)",
volume = "2018-June",
pages = "117--126",
journal = "Geotechnical Special Publication",
issn = "0895-0563",
publisher = "American Society of Civil Engineers (ASCE)",
number = "GSP 290",

}

TY - JOUR

T1 - Centrifuge Model Testing of Liquefaction Mitigation via Denitrification-Induced Desaturation

AU - Hall, Caitlyn A.

AU - Hernandez, Gabby

AU - Darby, Kathleen M.

AU - van Paassen, Leon

AU - Kavazanjian, Edward

AU - DeJong, Jason

AU - Wilson, Daniel

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Centrifuge model tests were conducted to evaluate the potential for earthquake-induced soil liquefaction mitigation via microbially mediated denitrification (dissimilatory reduction of nitrogen). Desaturation by denitrifying bacteria is the first stage of a two-stage process to increase earthquake-induced liquefaction resistance referred to as microbially induced desaturation and precipitation (MIDP). In the test described herein, denitrification was induced in Ottawa F-65 sand on the 1-m radius centrifuge at the University of California, Davis NHERI/CGM centrifuge. The degree of saturation was monitored during testing by monitoring soil moisture content. After monitoring indicated that significant desaturation had been induced at 1 g by an enriched denitrifying microorganism culture, the model was accelerated to 80 g. Saturation measurements during spin-up provided insight on the influence of steady state pore pressure on biogenic gas desaturation. Cyclic loading during the ultimate centrifuge acceleration of 80 g demonstrated desaturation via MIDP has potential to mitigate earthquake-induced soil liquefaction.

AB - Centrifuge model tests were conducted to evaluate the potential for earthquake-induced soil liquefaction mitigation via microbially mediated denitrification (dissimilatory reduction of nitrogen). Desaturation by denitrifying bacteria is the first stage of a two-stage process to increase earthquake-induced liquefaction resistance referred to as microbially induced desaturation and precipitation (MIDP). In the test described herein, denitrification was induced in Ottawa F-65 sand on the 1-m radius centrifuge at the University of California, Davis NHERI/CGM centrifuge. The degree of saturation was monitored during testing by monitoring soil moisture content. After monitoring indicated that significant desaturation had been induced at 1 g by an enriched denitrifying microorganism culture, the model was accelerated to 80 g. Saturation measurements during spin-up provided insight on the influence of steady state pore pressure on biogenic gas desaturation. Cyclic loading during the ultimate centrifuge acceleration of 80 g demonstrated desaturation via MIDP has potential to mitigate earthquake-induced soil liquefaction.

UR - http://www.scopus.com/inward/record.url?scp=85048758747&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048758747&partnerID=8YFLogxK

U2 - 10.1061/9780784481455.011

DO - 10.1061/9780784481455.011

M3 - Conference article

VL - 2018-June

SP - 117

EP - 126

JO - Geotechnical Special Publication

JF - Geotechnical Special Publication

SN - 0895-0563

IS - GSP 290

ER -