Estimation on ureolysis-based microbially induced calcium carbonate precipitation progress for geotechnical applications

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4 Scopus citations

Abstract

There are some key challenges in the geotechnical applications of microbially induced CaCO3 precipitation technique. These challenges mainly arise from lack of enough control on precipitation patterns within the soil. Monitoring precipitation progress in treatment solution (biogrout) before injection provides useful information on controlling the precipitation pattern. In this study, a hybrid of electrical conductivity change measurements and precipitation mass measurements was proposed for the monitoring. The results were described as characteristic curves which would provide useful information on interpreting, estimating, and steering the precipitation pattern within the soil. The effects of some influencing factors on the precipitation patterns were also statistically investigated. XRD, FTIR, and SEM were used for the microscale identification analysis of the precipitated solids.

Original languageEnglish (US)
Pages (from-to)34-41
Number of pages8
JournalMarine Georesources and Geotechnology
Volume35
Issue number1
DOIs
StatePublished - Jan 2 2017

Keywords

  • Biocementation
  • biogeotechnical engineering
  • biogeotechnology
  • biogrout
  • microbial geotechnics
  • soil improvement

ASJC Scopus subject areas

  • Oceanography
  • Geotechnical Engineering and Engineering Geology
  • Ocean Engineering

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