Utilization of microbial induced calcite precipitation for sand consolidation and mortar crack remediation
Joint Authors
Abu al-Aynayn, S. A.
Talkhan, Fatimah N.
Abd al-Jawad, H. A.
Source
Housing and Building National Research Center Journal
Issue
Vol. 8, Issue 3 (31 Dec. 2012), pp.185-192, 8 p.
Publisher
Housing and Building National Research Center
Publication Date
2012-12-31
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Topics
Abstract EN
The microbescanhydrolyzeureabyureaseenzymetoproduceammoniumaswellascar- bonate ionsandinthepresenceofcalciumionswhichcanprecipitatecalciumcarbonate;thispro- cess iscalled‘‘biocalcification’’ormicrobialinducedcalciteprecipitation(MICP).Thistechnologyis environmentally friendlynotonlybecauseitgivesstrengthtosandbody,butalsoitallowswaterto penetrate tosandbody,whichisunlikesilicatecementthatwilldestroytheecosystemoftheearth.
Calcium carbonateprecipitatedbybacteriaactsasabindingmaterialtosandparticles,soincom- pact sandwillbeconsolidated.Calciumchloride,calciumacetateandcalciumnitrate(1M)ascal- cium sourcesweretestedfortheirabilitytoconsolidatesandbymixingwithurea(1M)andbacteria cells (oneopticaldensity,1OD).Thekeypointofthisstudyaimedtochoosethesuitablecalcium source whichproduceshighercompressivestrengthandlowerwaterabsorption.Theresultsshowed that thedegreeofcrystallinityandamountofprecipitatedcalciumcarbonate,aswellastheconse- quent increaseinstrengthofconsolidatedsand,incaseofcalciumchloridemediumarehigherthan those precipitatedincaseofcalciumacetateaswellascalciumnitratemedia.Inaddition,consol- idated sandbycalciumchloridewasalsousedforcementmortarcrackremediation
American Psychological Association (APA)
Abu al-Aynayn, S. A.& Ali, A. H.& Talkhan, Fatimah N.& Abd al-Jawad, H. A.. 2012. Utilization of microbial induced calcite precipitation for sand consolidation and mortar crack remediation. Housing and Building National Research Center Journal،Vol. 8, no. 3, pp.185-192.
https://search.emarefa.net/detail/BIM-375050
Modern Language Association (MLA)
Abu al-Aynayn, S. A.…[et al.]. Utilization of microbial induced calcite precipitation for sand consolidation and mortar crack remediation. Housing and Building National Research Center Journal Vol. 8, no. 3 (2012), pp.185-192.
https://search.emarefa.net/detail/BIM-375050
American Medical Association (AMA)
Abu al-Aynayn, S. A.& Ali, A. H.& Talkhan, Fatimah N.& Abd al-Jawad, H. A.. Utilization of microbial induced calcite precipitation for sand consolidation and mortar crack remediation. Housing and Building National Research Center Journal. 2012. Vol. 8, no. 3, pp.185-192.
https://search.emarefa.net/detail/BIM-375050
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 192
Record ID
BIM-375050
