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DC Field | Value | Language |
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dc.citation.startPage | 124939 | - |
dc.citation.title | CONSTRUCTION AND BUILDING MATERIALS | - |
dc.citation.volume | 307 | - |
dc.contributor.author | Ahn, Eunjong | - |
dc.contributor.author | Kim, Hyunjun | - |
dc.contributor.author | Park, Byoungsun | - |
dc.contributor.author | Shin, Myoungsu | - |
dc.date.accessioned | 2023-12-21T15:08:10Z | - |
dc.date.available | 2023-12-21T15:08:10Z | - |
dc.date.created | 2021-10-07 | - |
dc.date.issued | 2021-11 | - |
dc.description.abstract | This study aimed at investigating two original topics on self-healing concrete, 1) the prediction of long-term healing progress and 2) the evaluation of re-healing performance for a previously healed but reopened crack, using the air-coupled surface-wave method. Small-scale plate concrete specimens were fabricated with a selfhealing binder incorporating ground granulated blast furnace slag, Na2SO4, anhydrite, and graded clinkers. A single flexural crack of 0.25-0.30 mm width was generated near the mid-span of each specimen. Then, the specimens were kept immersed in water, and the healing progress of the cracks was monitored for approximately one year. As a result, the residual surface crack area was reduced to 15.1% of the fully-cracked condition, and the surface wave transmission ratio recovered up to 82.9% of the uncracked condition. A prediction model for the ultimate healing rate and initial healing rate was proposed based on surface-wave results. After the first selfhealing process, the specimens were loaded again, and a similar crack was produced at the previously healed zone in each specimen. Then, the re-healing performance was evaluated for about two months. From the second self-healing process, one specimen with a narrow reopened crack showed a satisfactory recovery in surface wave transmission, comparable to that in the first healing. | - |
dc.identifier.bibliographicCitation | CONSTRUCTION AND BUILDING MATERIALS, v.307, pp.124939 | - |
dc.identifier.doi | 10.1016/j.conbuildmat.2021.124939 | - |
dc.identifier.issn | 0950-0618 | - |
dc.identifier.scopusid | 2-s2.0-85116424105 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/54106 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0950061821026891?via%3Dihub | - |
dc.identifier.wosid | 000708124800001 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.title | Long-term autogenous healing and re-healing performance in concrete: Evaluation using air-coupled surface-wave method | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Construction & Building TechnologyEngineering, CivilMaterials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Construction & Building TechnologyEngineeringMaterials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Self-healing concreteLong-term autogenous healingRe-healing performanceAir-coupled surface waveComputer vision | - |
dc.subject.keywordPlus | BLAST-FURNACE SLAGCRYSTALLINE ADMIXTURESCEMENTITIOUS MATERIALSCOMPOSITESCAPABILITYCRACKSTRANSMISSIONPERMEABILITYEFFICIENCYBEHAVIOR | - |
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