Influence of Chemistry of Chloride Ions in Cement Matrix on Corrosion of Steel
DC Field | Value | Language |
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dc.contributor.author | Song, Ha-Won | - |
dc.contributor.author | Jung, Min-Sun | - |
dc.contributor.author | Lee, Chang-Hong | - |
dc.contributor.author | Kim, Sang-Hyo | - |
dc.contributor.author | Ann, Ki Yong | - |
dc.date.accessioned | 2021-06-23T13:03:31Z | - |
dc.date.available | 2021-06-23T13:03:31Z | - |
dc.date.created | 2021-01-21 | - |
dc.date.issued | 2010-07 | - |
dc.identifier.issn | 0889-325X | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/39669 | - |
dc.description.abstract | To assess the resistance of steel against corrosion, mortar specimens were manufactured with a centrally located steel reinforcing bar The mortars were formulated by combining ordinary portland cement (OPC) with a single supplementary cementitious material. The proportions were 30% pulverized fuel ash (PFA), 60% ground-granulated blast-furnace slag (GGBS), or 10% silica fume (SF) by weight. In addition, a pure OPC mortar was prepared. The mortar specimens contained chlorides from 0.0 to 3.0% by weight of binder to accelerate the corrosion process. Then, the corrosion rate was measured by a polarization technique to determine the chloride threshold level for corrosion in concrete. The buffering capacity of the cement matrix to a pH reduction was quantified by measuring the acid neutralization capacity. The suspension consisting of distilled water and paste powder was exposed to nitric acid to characterize a decrease in the pH. As a result, the chloride threshold level for corrosion was dependent on binders, with values of 0.74 to 0.93%, 0.48 to 0.59%, 0.29 to 0.44%, and 0.63 to 0.78% by weight of binder for OPC, 30% PFA, 60% GCBS, and 10% SF, respectively. It was found that an increase in the buffering capacity resulted in an increased threshold value, of which characteristics were used for a new representation of the chloride threshold. The threshold ratio of [Cl-]:[H+] for acidification to a pH value of 10 at corrosion accounted for 0.0063 and 0.0082, irrespective of binder type, at 1.0 and 2.0 mA/m(2) (6.50 x 10(-4) and 1.29 x 10(-3) mA/in.(2)) of the corrosion rate, respectively. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | American Concrete Institute | - |
dc.title | Influence of Chemistry of Chloride Ions in Cement Matrix on Corrosion of Steel | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Ann, Ki Yong | - |
dc.identifier.scopusid | 2-s2.0-77955755398 | - |
dc.identifier.wosid | 000280744000002 | - |
dc.identifier.bibliographicCitation | ACI Materials Journal, v.107, no.4, pp.332 - 339 | - |
dc.relation.isPartOf | ACI Materials Journal | - |
dc.citation.title | ACI Materials Journal | - |
dc.citation.volume | 107 | - |
dc.citation.number | 4 | - |
dc.citation.startPage | 332 | - |
dc.citation.endPage | 339 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Construction & Building Technology | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Construction & Building Technology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | THRESHOLD LEVEL | - |
dc.subject.keywordPlus | REINFORCEMENT CORROSION | - |
dc.subject.keywordPlus | GGBS CONCRETE | - |
dc.subject.keywordPlus | BINDING | - |
dc.subject.keywordPlus | PROTECTION | - |
dc.subject.keywordPlus | CAPACITY | - |
dc.subject.keywordAuthor | buffering | - |
dc.subject.keywordAuthor | chloride | - |
dc.subject.keywordAuthor | corrosion | - |
dc.subject.keywordAuthor | threshold value | - |
dc.identifier.url | https://www.proquest.com/docview/744358855?accountid=11283 | - |
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