Evento
ASCE Geotechnical Institute Dinner Meeting - November 20, 2025 - Art Marble 21
Join us for the November meeting on Thursday, November 20, 2025.
$60 - Member / Non-member registration
$5 - Current College Student
If you are interested in sponsoring our local college students to attend dinner meetings and network with our local practitioners please reach out to Jackie Bronner (jackie.bronner@seattle.gov). Your support to our group and students is greatly appreciated!
Online registration will close the day of the meeting, but walk-up registration may be available (depending on space available).
Title:
Field Trial of Microbially Induced Desaturation (MID) for Liquefaction Mitigation of Silt Soil: Longevity and Maintainence
Presenter:
Diane Moug, Ph.D., A.M.ASCE, Associate Professor at Portland State University
Presenter Biography:
Diane Moug is an Associate Professor in the Civil and Environmental Engineering department at Portland State University. She earned her PhD and Masters degree from the University of California, Davis and her undergraduate degree from the University of British Columbia. Her research work investigates earthquake liquefaction susceptibility, liquefaction mitigation, and characterization of soils, with a focus on fine-grained soils in the Pacific Northwest. Her work has included field trials of bio-based ground improvement, laboratory testing, post-earthquake reconnaissance following the 2023 Türkiye/Syria Kahramanmara Earthquake Sequence, and examination of site investigation tools with numerical and centrifuge modeling. She is a recipient of the National Science Foundation CAREER Award, the Earthquake Engineering Research Institute Younger Member Award, and Maseeh College Researcher of the Year award.
Abstract:
Earthquake liquefaction hazards in silty soils are a critical problem in Portland, Oregon and the Pacific Northwest. This is a particular problem for existing facilities founded upon silty liquefiable soil, for which there exists no cost-effective mitigation solution at the present time. Recent studies suggest that liquefaction mitigation using microbially-induced desaturation (MID) may provide the capability to do this. The objective of MID is to reduce earthquake-induced excess pore water pressure generation compared to saturated soil and thereby reduce the potential for triggering liquefaction. This presentation will describe two field trials of MID for liquefaction mitigation performed at low-plasticity silt sites in Portland, OR in summer 2019. Monitoring at both sites indicated that liquefiable silts were successfully desaturated. Long-term monitoring at one site suggests that desaturation sustained five years. After five years, some resaturation was observed. MID retreatment was performed in summer 2025 to test whether retreatment is a feasible maintenance option, if required.
Tentative Meeting Agenda
5:30 Check-in, Dinner, & Networking
6:00 Introduction & Announcements
6:15 Presentation
7:15 Wrap Up
Directions & Parking
Art Marble 21 is located at 731 Westlake Ave N Seattle , WA 98109. Paid parking is available at nearby lots along South Lake Union and adjacent properties.
On arrival at Art Marble, please head to the Show Room.
https://www.artmarble21.com/
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UbicaciónArt Marble 21 (Ver)
731 Westlake Ave N.
Seattle, WA 98109
United States
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Contacto
Accesibilidad
Art Marble 21 is located at 731 Westlake Ave N Seattle , WA 98109. Paid parking is available at nearby lots along South Lake Union and adjacent properties.
https://www.artmarble21.com/
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