Rodyti trumpą aprašą

dc.contributor.authorIvaškė, Augusta
dc.contributor.authorGuobužaitė, Simona
dc.contributor.authorJakubovskis, Ronaldas
dc.contributor.authorUrbonavičius, Jaunius
dc.date.accessioned2023-09-18T16:19:13Z
dc.date.available2023-09-18T16:19:13Z
dc.date.issued2022
dc.identifier.urihttps://etalpykla.vilniustech.lt/handle/123456789/113153
dc.description.abstractThe self-healing ability of biological concrete is closely related to the long-term viability of bacteria in the concrete matrix. However, the ability of bacteria to survive, grow and retain their metabolic activity in concrete is questionable. Our results show that the viability of Bacillus pseudofirmus bacteria in a white CEM-I cement is almost 100-fold higher compared to the other tested cement types. Analysis of different types of cement reveals that it contains metal oxides that may have antimicrobial activity. Those metal oxides are MgO; Al2O3; TiO2; Fe2O3; ZnO and CuO. The minimum inhibitory concentrations (MIC) of these metal oxides were further investigated. ZnO was found to be the most toxic metal oxide for all tested bacteria strains (B. pseudofirmus, B. cohnii and B. halodurans). Depending on the bacterial strain, the MIC values of ZnO varied from 12.5 μg/ml to 25 μg/ml. This metal oxide was not detected only in white CEM-I cement, resulting in higher bacterial viability. Common explanations for bacterial mortality are related to the high pH of the concrete and mechanical stress during cement hardening. This study has shown that the viability of bacteria is greatly influenced by the chemical composition of the cement used.eng
dc.format.extentp. 75
dc.format.mediumtekstas / txt
dc.language.isoeng
dc.rightsLaisvai prieinamas internete
dc.source.urihttps://www.eyec.ichip.pw.edu.pl/?page_id=74
dc.source.urihttps://talpykla.elaba.lt/elaba-fedora/objects/elaba:132266130/datastreams/MAIN/content
dc.titleImpact of trace elements in Portland cement on the bacterial viability in biological concrete
dc.typeKonferencijos pranešimo santrauka / Conference presentation abstract
dcterms.references0
dc.type.pubtypeT2 - Konferencijos pranešimo tezės / Conference presentation abstract
dc.contributor.institutionVilniaus Gedimino technikos universitetas
dc.contributor.facultyFundamentinių mokslų fakultetas / Faculty of Fundamental Sciences
dc.contributor.facultyStatybos fakultetas / Faculty of Civil Engineering
dc.contributor.departmentStatinių ir tiltų konstrukcijų institutas / Institute of Building and Bridge Structures
dc.subject.researchfieldT 008 - Medžiagų inžinerija / Material engineering
dc.subject.researchfieldT 005 - Chemijos inžinerija / Chemical engineering
dc.subject.vgtuprioritizedfieldsFM0202 - Ląstelių ir jų biologiškai aktyvių komponentų tyrimai / Investigations on cells and their biologically active components
dc.subject.ltspecializationsL104 - Nauji gamybos procesai, medžiagos ir technologijos / New production processes, materials and technologies
dc.subject.enviability of bacteria
dc.subject.enbiological concrete
dc.subject.enbiomineralization
dc.subject.encement type.
dcterms.sourcetitleEYEC Monograph: 10th European young engineers conference, 4–6 April 2022, Faculty of Chemical and Process Engineering, Warsaw University of Technology
dc.publisher.nameWarsaw University of Technology
dc.publisher.cityWarsaw
dc.identifier.elaba132266130


Šio įrašo failai

Thumbnail

Šis įrašas yra šioje (-se) kolekcijoje (-ose)

Rodyti trumpą aprašą