Biological Improvement of Sands for Liquefaction Prevention and Damage Mitigation (NEES-2012-0953)

By Jason DeJong

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Abstract

Title: Biological Improvement of Sands for Liquefaction Prevention and Damage Mitigation (NEES-2012-0953)

Year Of Curation: 2012

Description: Microbial induced calcite precipitation (MICP), a novel bio-mediated ground improvement method, was explored to mitigate liquefaction-prone soils. Geotechnical centrifuge tests were used to evaluate cementation integrity and the response of MICP cemented sands to dynamic loading. The cementation integrity testing reveals a change in behavior from a??soil-likea?? to a??rock-likea?? with an increase in treatment level. Results from dynamic testing demonstrate a clear increase in resistance to liquefaction of MICP treated sands compared to untreated loose sand. The MICP sands were treated to varying levels of cementation (light, moderate, and heavy cementation levels), assessed using non-destructive shear wave velocity measurements. The centrifuge models were all subjected to ground motions consisting of sine waves with increasing amplitudes. Accelerations, pore pressures, and settlements were measured in the soil during shaking, and the changes in soil behavior and post-shaking shear wave velocity for soils prepared to different cementation levels were investigated. Increased resistance to liquefaction was demonstrated with a decrease in excess pore pressure ratios in the MICP treated models as well as in reduced post-shaking settlements; however, surface accelerations were amplified at heavy levels of cementation. A tradeoff between improving liquefaction resistance and minimizing undesirable higher surface accelerations needs to be considered when designing the soil improvement level. (

Award: http://www.nsf.gov/awardsearch/showAward?AWD_ID=0830182

PIs & CoPIs: Jason DeJong

Dates: October 13, 2010 - July 31, 2011

Organizations: ,University of California, Davis, CA, United States

Facilities: ,University of California, Davis, CA, United States

Sponsor: NSF - 0830182 (

Keywords: ,calcite cementation,centrifuge,Schaevitz centrifuge,ground improvement,liquefaction mitigation,bio-mediated soil improvement

Publications "Bio-Mediated Soil Improvement and the Effect of Cementation on the Behavior, Improvement, and Performance of Sand"

Cite this work

Researchers should cite this work as follows:

  • Jason DeJong (2017), "Biological Improvement of Sands for Liquefaction Prevention and Damage Mitigation (NEES-2012-0953)," https://datacenterhub.org/resources/14416.

    BibTex | EndNote

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      ON jos_tags.id = jos_tags_object.tagid
  7. 1 × SELECT jos_resources.*,parent_id,jos_resource_assoc.ordering AS associative_ordering,jos_resource_assoc.grouping AS associative_grouping
      FROM `jos_resources`
      INNER JOIN jos_resource_assoc
      ON jos_resources.id = child_id
  8. 1 × SELECT *
      FROM `jos_resource_licenses`
  9. 1 × SELECT m.id,m.title,m.module,m.position,m.content,m.showtitle,m.params,mm.menuid,e.protected
      FROM `jos_modules` AS `m`
      LEFT JOIN jos_modules_menu AS mm
      ON mm.moduleid = m.id
      LEFT JOIN jos_extensions AS e
      ON e.element = m.module
      AND e.client_id = m.client_id
  10. 1 × SELECT jos_tags_object.label,jos_tags.*
      FROM `jos_tags`
      INNER JOIN jos_tags_object
      ON jos_tags_object.tagid = jos_tags.id
  11. 1 × SELECT *
      FROM `jos_resource_sponsors`
  12. 1 × SELECT k.*
      FROM ((SELECT DISTINCT w.id, w.title, w.pagename AS alias, v.pagetext AS introtext, NULL AS type, NULL AS published, NULL AS publish_up, w.scope, w.rating, w.times_rated, w.ranking, 'Topic' AS section
      FROM `jos_wiki_pages` AS w
      INNER JOIN `jos_wiki_versions` AS v
      ON w.version_id=v.id
      INNER JOIN `jos_wiki_links` AS wl
      ON wl.page_id=w.id
  13. 1 × SELECT *
      FROM `jos_citations`
      INNER JOIN jos_citations_assoc
      ON jos_citations_assoc.cid = jos_citations.id
  14. 1 × SELECT *
      FROM `jos_author_assoc`
  15. 1 × SELECT *
      FROM `jos_viewlevels
  16. 1 × SELECT b.id
      FROM `jos_usergroups` AS `a`
      LEFT JOIN jos_usergroups AS b
      ON b.lft <= a.lft
      AND b.rgt >= a.rgt
  17. 1 × SELECT session_id
      FROM `jos_session`
  18. 1 × SELECT folder AS type,element AS name,protected,params
      FROM `jos_extensions`
  19. 1 × SELECT m.id,m.menutype,m.title,m.alias,m.note,m.path AS route,m.link,m.type,m.level,m.language,m.browserNav,m.access,m.params,m.home,m.img,m.template_style_id,m.component_id,m.parent_id,e.element AS component
      FROM `jos_menu` AS `m`
      LEFT JOIN jos_extensions AS e
      ON e.extension_id = m.component_id
  20. 1 × SELECT jos_tags.*
      FROM `jos_tags`
      INNER JOIN jos_tags_object
      ON jos_tags.id = jos_tags_object.tagid
  21. 1 × SELECT *
      FROM `jos_resources`
  22. 1 × SELECT jos_template_styles.id,jos_template_styles.home,jos_template_styles.template,jos_template_styles.params,jos_extensions.protected
      FROM `jos_template_styles`
      INNER JOIN jos_extensions
      ON jos_extensions.element = jos_template_styles.template
  23. 1 × SELECT *
      FROM `jos_resource_ratings`
OTHER Tables:
  1. 1 × UPDATE `jos_session`
      SET `data` = '__default|a:9:{s:15:\"session.counter\";i:1;s:19:\"session.timer.start\";i:1590708628;s:18:\"session.timer.last\";i:1590708628;s:17:\"session.timer.now\";i:1590708628;s:8:\"registry\";O:23:\"Hubzero\\Config\\Registry\":2:{s:7:\"\0*\0data\";O:8:\"stdClass\":2:{s:1:\"0\";s:7:\"session\";s:10:\"Components\";O:8:\"stdClass\":1:{s:9:\"Resources\";O:8:\"stdClass\":2:{s:6:\"Models\";O:8:\"stdClass\":1:{s:6:\"Author\";O:8:\"stdClass\":2:{s:7:\"orderby\";s:8:\"ordering\";s:8:\"orderdir\";s:3:\"asc\";}}s:7:\"Reviews\";O:8:\"stdClass\":1:{s:6:\"Models\";O:8:\"stdClass\":1:{s:6:\"Review\";O:8:\"stdClass\":2:{s:7:\"orderby\";s:7:\"created\";s:8:\"orderdir\";s:4:\"desc\";}}}}}}s:9:\"separator\";s:1:\".\";}s:4:\"user\";C:17:\"Hubzero\\User\\User\":22:{a:1:{s:5:\"guest\";b:1;}}s:11:\"tracker.sid\";s:32:\"9ef7ad426082cae98b8448927514e00e\";s:12:\"tracker.ssid\";s:32:\"9ef7ad426082cae98b8448927514e00e\";s:12:\"tracker.rsid\";s:32:\"9ef7ad426082cae98b8448927514e00e\";}',`time` = '1590708628',`ip` = '10.111.11.10'
  2. 1 × SHOW FULL COLUMNS
      FROM `jos_resource_assoc
  3. 1 × INSERT INTO `jos_session` (`session_id`,`client_id`,`time`,`ip`)
      VALUES ('9ef7ad426082cae98b8448927514e00e','0','1590708628','10.111.11.10'
  4. 1 × DELETE
      FROM `jos_session`
  • onAfterInitialise Method plgSystemP3p::onAfterInitialise /core/plugins/system/p3p/p3p.php:21
  • onAfterInitialise Method plgSystemRemember::onAfterInitialise /core/plugins/system/remember/remember.php:20
  • onAfterInitialise Method plgSystemHubzero::onAfterInitialise /core/plugins/system/hubzero/hubzero.php:21
  • onAfterInitialise Method plgSystemXFeed::onAfterInitialise /core/plugins/system/xfeed/xfeed.php:21
  • onAfterInitialise Method plgSystemSupergroup::onAfterInitialise /core/plugins/system/supergroup/supergroup.php:113
  • onAfterInitialise Method plgSystemReferrerpolicy::onAfterInitialise /core/plugins/system/referrerpolicy/referrerpolicy.php:21
  • onAfterRoute Method plgSystemJquery::onAfterRoute /core/plugins/system/jquery/jquery.php:21
  • onAfterRoute Method plgSystemSpamjail::onAfterRoute /core/plugins/system/spamjail/spamjail.php:21
  • onAfterRoute Method plgSystemPassword::onAfterRoute /core/plugins/system/password/password.php:21
  • onAfterRoute Method plgSystemIncomplete::onAfterRoute /core/plugins/system/incomplete/incomplete.php:21
  • onAfterRoute Method plgSystemUnconfirmed::onAfterRoute /core/plugins/system/unconfirmed/unconfirmed.php:21
  • onAfterRoute Method plgSystemUnapproved::onAfterRoute /core/plugins/system/unapproved/unapproved.php:21
  • onResourcesAreas Method plgResourcesAbout::onResourcesAreas /core/plugins/resources/about/about.php:32
  • onResourcesAreas Method plgResourcesReviews::onResourcesAreas /core/plugins/resources/reviews/reviews.php:43
  • onResourcesAreas Method plgResourcesUsage::onResourcesAreas /core/plugins/resources/usage/usage.php:29
  • onResourcesAreas Method plgResourcesVersions::onResourcesAreas /core/plugins/resources/versions/versions.php:29
  • onResourcesAreas Method plgResourcesShare::onResourcesAreas /core/plugins/resources/share/share.php:29
  • onResourcesAreas Method plgResourcesCitations::onResourcesAreas /core/plugins/resources/citations/citations.php:29
  • onResourcesAreas Method plgResourcesQuestions::onResourcesAreas /core/plugins/resources/questions/questions.php:29
  • onResourcesAreas Method plgResourcesSupportingDocs::onResourcesAreas /core/plugins/resources/supportingdocs/supportingdocs.php:30
  • onResourcesAreas Method plgResourcesWishlist::onResourcesAreas /core/plugins/resources/wishlist/wishlist.php:29
  • onResourcesAreas Method plgResourcesFindThisText::onResourcesAreas /core/plugins/resources/findthistext/findthistext.php:29
  • onResourcesAreas Method plgResourcesWindowstools::onResourcesAreas /core/plugins/resources/windowstools/windowstools.php:214
  • onContentPrepare Method plgContentLoadmodule::onContentPrepare /core/plugins/content/loadmodule/loadmodule.php:35
  • onContentPrepare Method plgContentEmailcloak::onContentPrepare /core/plugins/content/emailcloak/emailcloak.php:25
  • onContentPrepare Method plgContentPagebreak::onContentPrepare /core/plugins/content/pagebreak/pagebreak.php:35
  • onContentPrepare Method plgContentXhubtags::onContentPrepare /core/plugins/content/xhubtags/xhubtags.php:25
  • onContentPrepare Method plgContentFormathtml::onContentPrepare /core/plugins/content/formathtml/formathtml.php:105
  • onContentPrepare Method plgContentExternalhref::onContentPrepare /core/plugins/content/externalhref/externalhref.php:41
  • onResources Method plgResourcesAbout::onResources /core/plugins/resources/about/about.php:54
  • onResources Method plgResourcesReviews::onResources /core/plugins/resources/reviews/reviews.php:91
  • onResources Method plgResourcesUsage::onResources /core/plugins/resources/usage/usage.php:51
  • onResources Method plgResourcesVersions::onResources /core/plugins/resources/versions/versions.php:50
  • onResources Method plgResourcesShare::onResources /core/plugins/resources/share/share.php:50
  • onResources Method plgResourcesCitations::onResources /core/plugins/resources/citations/citations.php:51
  • onResources Method plgResourcesQuestions::onResources /core/plugins/resources/questions/questions.php:60
  • onResources Method plgResourcesSupportingDocs::onResources /core/plugins/resources/supportingdocs/supportingdocs.php:52
  • onResources Method plgResourcesWishlist::onResources /core/plugins/resources/wishlist/wishlist.php:50
  • onResources Method plgResourcesFindThisText::onResources /core/plugins/resources/findthistext/findthistext.php:51
  • onResources Method plgResourcesWindowstools::onResources /core/plugins/resources/windowstools/windowstools.php:235
  • onResources Method plgResourcesGooglescholar::onResources /core/plugins/resources/googlescholar/googlescholar.php:25
  • onResources Method plgResourcesOpengraph::onResources /core/plugins/resources/opengraph/opengraph.php:25
  • onResources Method plgResourcesDublincore::onResources /core/plugins/resources/dublincore/dublincore.php:25
  • onResources Method plgResourcesCoins::onResources /core/plugins/resources/coins/coins.php:25
  • onResourcesSub Method plgResourcesGroups::onResourcesSub /core/plugins/resources/groups/groups.php:45
  • onResourcesSub Method plgResourcesRelated::onResourcesSub /core/plugins/resources/related/related.php:45
  • onResourcesSub Method plgResourcesSponsors::onResourcesSub /core/plugins/resources/sponsors/sponsors.php:45
  • onResourcesSub Method plgResourcesWatch::onResourcesSub /core/plugins/resources/watch/watch.php:46
  • onResourcesSub Method plgResourcesCollections::onResourcesSub /core/plugins/resources/collections/collections.php:31
  • onAfterDispatch Method plgSystemDebug::onAfterDispatch /core/plugins/system/debug/debug.php:60
  • onAfterDispatch Method PlgSystemHighlight::onAfterDispatch /core/plugins/system/highlight/highlight.php:25
  • onAfterRender Method plgSystemSef::onAfterRender /core/plugins/system/sef/sef.php:21