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Oh, Jae Eun
Nano-AIMS 구조재료 연구실
Research Interests
  • Concrete Materials, Construction Materials, Cementless Binders


Determination of the bulk modulus of hydroxycancrinite, a possible zeolitic precursor in geopolymers, by high-pressure synchrotron X-ray diffraction

DC Field Value Language Oh, Jae Eun ko Clark, Simon M. ko Monteiro, Paulo J. M. ko 2014-12-31T05:52:25Z - 2013-06-12 ko 2011-11 -
dc.identifier.citation CEMENT & CONCRETE COMPOSITES, v.33, no.10, pp.1014 - 1019 ko
dc.identifier.issn 0958-9465 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract Crystalline zeolitic materials, such as hydroxycancrinite, hydroxysodalite, herschelite and nepheline, are often synthesized from geopolymerization using fly-ash and solutions of NaOH at high temperatures. Comprised mainly of 6-membered aluminosilicate rings that act as basic building units, their crystal structures may provide insight into the reaction products formed in NaOH-activated fly ash-based geopolymers. Recent research indicates that the hydroxycancrinite and hydroxysodalite may play an important role as possible analogues of zeolitic precursor in geopolymers. Herein is reported a high pressure synchrotron study of the behavior of hydroxycancrinite exposed to pressures up to 6.1 GPa in order to obtain its bulk modulus. A refined equation of state for hydroxycancrinite yielded a bulk modulus of K(o) = 46 +/- 5 GPa (assuming K'(o) = 4.0) for a broad range of applied pressure. When low pressure values are excluded from the fit and only the range of 2.5 and 6.1 GPa is considered, the bulk modulus of hydroxycancrinite was found to be K(o) = 46.9 +/- 0.9 GPa (K'(o) = 4.0 +/- 0.4, calculated). Comparison with the literature shows that all zeolitic materials possessing single 6-membered rings (i.e., hydroxycancrinite, sodalite and nepheline) have similar bulk moduli. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ELSEVIER SCI LTD ko
dc.subject 6-membered rings ko
dc.subject Applied pressure ko
dc.subject Building units ko
dc.subject Equation of state ko
dc.subject Geopolymer ko
dc.subject Geopolymerization ko
dc.subject High pressure ko
dc.subject High temperature ko
dc.subject Hydroxycancrinite ko
dc.subject Hydroxysodalite ko
dc.subject Low pressures ko
dc.subject Synchrotron studies ko
dc.subject Synchrotron x ray diffraction ko
dc.subject Zeolitic materials ko
dc.title Determination of the bulk modulus of hydroxycancrinite, a possible zeolitic precursor in geopolymers, by high-pressure synchrotron X-ray diffraction ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-80054049711 ko
dc.identifier.wosid 000297188700004 ko
dc.type.rims ART ko
dc.description.wostc 7 * 2015-05-06 *
dc.identifier.doi 10.1016/j.cemconcomp.2011.05.002 ko
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