DC Field | Value | Language |
---|---|---|
dc.contributor.author | Son, Hyeongmin | ko |
dc.contributor.author | Kim, HaYeon | ko |
dc.contributor.author | Park, Sol Moi | ko |
dc.contributor.author | Lee, Haeng-Ki | ko |
dc.date.accessioned | 2018-07-24T02:25:19Z | - |
dc.date.available | 2018-07-24T02:25:19Z | - |
dc.date.created | 2018-06-22 | - |
dc.date.created | 2018-06-22 | - |
dc.date.issued | 2018-05 | - |
dc.identifier.citation | MATERIALS, v.11, no.5 | - |
dc.identifier.issn | 1996-1944 | - |
dc.identifier.uri | http://hdl.handle.net/10203/244065 | - |
dc.description.abstract | The present study investigated the CaCO3 precipitation performance of ureolytic and non-ureolytic bacteria co-cultured as a self-healing agent for cementitious materials crack repair. Three different inoculum ratios of ureolytic Sporosarcina pasteurii and non-ureolytic Bacillus thuringiensis (10:0, 8:2, or 5:5) were used. The effect of coculturing ureolytic and non-ureolytic bacteria on microbial metabolism was investigated by measuring the rate of growth in urea-containing medium and the rate of NH4 + and CaCO3 production in urea-calcium lactate medium. The self-healing efficiency of co-cultured bacteria was examined by exposing cement mortar specimens with predefined cracks to media containing single urease-producing or co-cultured bacteria. The obtained results provide new findings, where CaCO3 precipitation is improved by co-culturing ureolytic and non-ureolytic bacteria, owing to the relatively faster growth rate of non-ureolytic bacteria. The crack filling rate correlated with the width of crack, in particular, specimens with a smaller crack width showed the faster filling effect, indicating that the crack width can be a dominant factor influencing the CaCO3 precipitation capacity of co-cultured bacteria. | - |
dc.language | English | - |
dc.publisher | MDPI AG | - |
dc.title | Ureolytic/Non-ureolytic bacteria co-cultured self-healing agent for cementitious materials crack repair | - |
dc.type | Article | - |
dc.identifier.wosid | 000434711700132 | - |
dc.identifier.scopusid | 2-s2.0-85046835914 | - |
dc.type.rims | ART | - |
dc.citation.volume | 11 | - |
dc.citation.issue | 5 | - |
dc.citation.publicationname | MATERIALS | - |
dc.identifier.doi | 10.3390/ma11050782 | - |
dc.contributor.localauthor | Lee, Haeng-Ki | - |
dc.description.isOpenAccess | Y | - |
dc.type.journalArticle | Article | - |
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