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dc.contributor.author심광보-
dc.date.accessioned2018-03-20T04:57:26Z-
dc.date.available2018-03-20T04:57:26Z-
dc.date.issued2014-12-
dc.identifier.citationJournal of Ceramic Processing Research, 2014, 15(6), P.539-544en_US
dc.identifier.issn1229-9162-
dc.identifier.urihttp://www.scopus.com/record/display.uri?eid=2-s2.0-84920873270&origin=inward&txGid=27da6b774f9d04a5555692a330d9a5f7-
dc.description.abstractThree calcium aluminate (C(3)A) and calcium sulphoaluminate (C(4)A(3)(S) over bar) as clinker minerals were synthesized to investigate the solidification/stabilization (S/S) mechanism of lead and chromium ions on cement matrix. Effects of AFt phases on S/S mechanism were analyzed using FT-IR, SEM-EDS and heat evolution. Lead and chromium leachability from solidified AFt phases was also investigated using the toxicity characteristic leaching procedure (TCLP) recommended by the U.S. Environmental Protection Agency (EPA). The results showed that clinker mineral types considerably affected the S/S mechanism of AFt and AFm phases incorporating chromium and lead ions. In the case of adding chromium, both AFt and AFm phases based C(3)A and C(4)A(3)(S) over bar allowed ionic substitution Cr3+ for the trivalent ion as Al3+ and CrO42- for SO42-. Moreover, chromate hydrocalumite [3CaO center dot Al2O3 center dot CaCrO4 center dot nH(2)O] was also observed. However, in the case of adding lead, it was found that when C(3)A and C(4)A(3)(S) over bar were hydrated, the formation of AFt and AFm phase based C(4)A(3)(S) over bar was faster than C(3)A. Especially, AFt phases and the calcium lead hydroxides (Ca[Pb(OH)(3)center dot H2O](2)) incorporating lead ions were formed during hydration of C(4)A(3)(S) over bar in the early stage compared to the C(3)A case. This showed that AFt and AFm phase based C(4)A(3)(S) over bar for S/S of lead were more effective than that of C(3)A.en_US
dc.description.sponsorshipThe author would like to thank the SERIC (Sustainable Engineering Research Innovative Consultant) Co., Ltd. in Korea for their advice and financial support (www.seric.co.kr).en_US
dc.language.isoenen_US
dc.publisherKorean ASSOC Crystal Growthen_US
dc.subjectC(3)Aen_US
dc.subjectC(4)A(3)(S)over-baren_US
dc.subjectAFt phasesen_US
dc.subjectLeaden_US
dc.subjectChromium (III)en_US
dc.titleInfluence of lead and chromium ions as toxic heavy metals between AFt and AFm phases based on C(3)A and C(4)A(3)(S)over-baren_US
dc.typeArticleen_US
dc.relation.no6-
dc.relation.volume15-
dc.relation.page539-544-
dc.relation.journalJOURNAL OF CERAMIC PROCESSING RESEARCH-
dc.contributor.googleauthorAhn, Tae-Ho-
dc.contributor.googleauthorShim, Kwang-Bo-
dc.contributor.googleauthorSo, Kwang-Ho-
dc.contributor.googleauthorRyou, Jae-Suk-
dc.relation.code2014032629-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDIVISION OF MATERIALS SCIENCE AND ENGINEERING-
dc.identifier.pidkbshim-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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