Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/34131

TitleApatite formation on calcined kaolin-white Portland cement geopolymer
Author(s)Pangdaeng, S.
Sata, V.
Aguiar, J. L. Barroso de
Torgal, Fernando Pacheco
Chindaprasirt, P.
KeywordsGeopolymers
Hydroxyapatite
Bio-layer
Bioactivity
Geopolymer
Apatite
Simulated body fluid
Kaolin
White Portland cement
Issue date2015
PublisherElsevier
JournalMaterials Science and Engineering: C
CitationPangdaeng S., Sata V., Aguiar J., Torgal F. P., Chindaprasirt P. Apatite formation on calcined kaolin–white Portland cement geopolymer, Materials Science and Engineering C, Vol. 51, pp. 1-6, doi:10.1016/j.msec.2015.02.039, 2015.
Abstract(s)In this study, calcined kaolin–white Portland cement geopolymerwas investigated for use as biomaterial. Sodiumhydroxide and sodium silicate were used as activators. In vitro test was performed with simulated body fluid (SBF) for bioactivity characterization. The formation of hydroxyapatite bio-layer on the 28-day soaked samples surface was tested using SEM, EDS and XRD analyses. The results showed that the morphology of hydroxyapatite was affected by the source material composition, alkali concentration and curing temperature. The calcined kaolin–white Portland cement geopolymer with relatively high compressive strength could be fabricated for use as biomaterial. The mix with 50% white Portland cement and 50% calcined kaolin had 28-day compressive strength of 59.0 MPa and the hydroxyapatite bio-layer on the 28-day soaked sample surface was clearly evident.
Typearticle
URIhttp://hdl.handle.net/1822/34131
DOI10.1016/j.msec.2015.02.039
ISSN0928-4931
Peer-Reviewedyes
AccessopenAccess
Appears in Collections:C-TAC - Artigos em Revistas Internacionais

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