Direct shear strength of biologically cemented gravel

L. A. Van Paassen, W. J. Van Hemert, W. R.L. Van Der Star, G. Van Zwieten, L. Van Baalen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

Biogrouting is a new potentially sustainable ground improvement method. The process of biogrouting involves carbonate precipitation induced by microorganisms (MICP) e.g. by hydrolysis of urea. In the summer of 2010, biogrouting was applied for the first time in practice to reduce the risk of borehole collapse during horizontal directional drilling in gravel layers. Within this project several gravel columns were treated in the laboratory in order to evaluate the potential of MICP to strengthen gravel and to determine the minimum required amount of cement to prevent borehole collapse. Although it proved to be difficult to produce homogeneously cemented gravel columns a correlation was established between the amount of calcium carbonate and the direct shear strength for different loading conditions.

Original languageEnglish (US)
Title of host publicationGeoCongress 2012
Subtitle of host publicationState of the Art and Practice in Geotechnical Engineering
Pages968-977
Number of pages10
Edition225 GSP
DOIs
StatePublished - Dec 1 2012
Externally publishedYes
EventGeoCongress 2012: State of the Art and Practice in Geotechnical Engineering - Oakland, CA, United States
Duration: Mar 25 2012Mar 29 2012

Publication series

NameGeotechnical Special Publication
Number225 GSP
ISSN (Print)0895-0563

Other

OtherGeoCongress 2012: State of the Art and Practice in Geotechnical Engineering
CountryUnited States
CityOakland, CA
Period3/25/123/29/12

ASJC Scopus subject areas

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

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