Hydraulic and physicochemical properties of dense thin bentonite layers permeated with variably mixed alkaline solutions of KOH and CaCl2 at various temperatures (25-75 degrees C) for 3 years
DC Field | Value | Language |
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dc.contributor.author | Yoon, Yeowon | - |
dc.contributor.author | Anh, Ha Ngoc | - |
dc.contributor.author | Rha, Sunwon | - |
dc.contributor.author | Kim, Jin-Seok | - |
dc.contributor.author | Jo, Ho Young | - |
dc.date.accessioned | 2022-05-03T04:42:06Z | - |
dc.date.available | 2022-05-03T04:42:06Z | - |
dc.date.created | 2022-05-03 | - |
dc.date.issued | 2022-06 | - |
dc.identifier.issn | 0266-1144 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/140656 | - |
dc.description.abstract | Hydraulic conductivity tests were performed using mixed alkaline solutions of KOH and CaCl2 (pH ~12) on thin Na-bentonite layers under various temperature conditions (25-75 & DEG;C) for 3 years. For dense thin Na-bentonite (dry density of 1.12 Mg/m(3)) in a mixed alkaline solution of 0.03 M KOH and 0.03 M CaCl2, the hydraulic conductivities at 50 & DEG;C and 75 & DEG;C were approximately 10 times higher than that at 25 & DEG;C. The bentonite samples permeated with the mixed solution at 50 & DEG;C and 75 & DEG;C achieved almost complete cation exchange of Na ions by Ca and K ions. However, only slight cation exchange occurred in the bentonite specimens permeated at 25 & DEG;C, regardless of the type of permeant. The free swell index of the reacted bentonite permeated with a mixed solution of 0.03 M KOH and 0.03 M CaCl2 significantly decreased at 50 & DEG;C and 75 & DEG;C compared with that at 25 & DEG;C. X-ray diffraction analysis revealed that the decreases in the relative intensities of the peaks of accessory minerals, such as opal-cristobalite/tridymite, quartz, and feldspar, were enhanced at 50 & DEG;C and 75 & DEG;C. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.subject | BARRIER PERFORMANCE | - |
dc.subject | CATION-EXCHANGE | - |
dc.subject | CONDUCTIVITY | - |
dc.subject | LINERS | - |
dc.subject | GCLS | - |
dc.subject | HYDRATION | - |
dc.subject | ANALOGS | - |
dc.subject | SODIUM | - |
dc.title | Hydraulic and physicochemical properties of dense thin bentonite layers permeated with variably mixed alkaline solutions of KOH and CaCl2 at various temperatures (25-75 degrees C) for 3 years | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Jo, Ho Young | - |
dc.identifier.doi | 10.1016/j.geotexmem.2022.02.004 | - |
dc.identifier.scopusid | 2-s2.0-85125487453 | - |
dc.identifier.wosid | 000774365400004 | - |
dc.identifier.bibliographicCitation | GEOTEXTILES AND GEOMEMBRANES, v.50, no.3, pp.521 - 534 | - |
dc.relation.isPartOf | GEOTEXTILES AND GEOMEMBRANES | - |
dc.citation.title | GEOTEXTILES AND GEOMEMBRANES | - |
dc.citation.volume | 50 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 521 | - |
dc.citation.endPage | 534 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Geology | - |
dc.relation.journalWebOfScienceCategory | Engineering, Geological | - |
dc.relation.journalWebOfScienceCategory | Geosciences, Multidisciplinary | - |
dc.subject.keywordPlus | BARRIER PERFORMANCE | - |
dc.subject.keywordPlus | CATION-EXCHANGE | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.subject.keywordPlus | LINERS | - |
dc.subject.keywordPlus | GCLS | - |
dc.subject.keywordPlus | HYDRATION | - |
dc.subject.keywordPlus | ANALOGS | - |
dc.subject.keywordPlus | SODIUM | - |
dc.subject.keywordAuthor | Bentonite barrier | - |
dc.subject.keywordAuthor | Alkaline solution | - |
dc.subject.keywordAuthor | Hydraulic conductivity | - |
dc.subject.keywordAuthor | Cation exchange | - |
dc.subject.keywordAuthor | Coupled thermal -hydraulic -chemical process | - |
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