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Synthesis and Crystal Structure Solution of Potassium Dawsonite: an intermediate compound in the alkaline hydrolysis of Calcium Aluminate Cements
dc.contributor.author | Fernández Carrasco, Lucía |
dc.contributor.author | Puertas, F. |
dc.contributor.author | Blanco Varela, M.Teresa |
dc.contributor.author | Vázquez, T. |
dc.contributor.author | Rius, J. |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Construccions Arquitectòniques I |
dc.date.accessioned | 2013-05-14T07:31:53Z |
dc.date.created | 2005-04 |
dc.date.issued | 2005-04 |
dc.identifier.citation | Fernandez-Carrasco, L. [et al.]. Synthesis and Crystal Structure Solution of Potassium Dawsonite: an intermediate compound in the alkaline hydrolysis of Calcium Aluminate Cements. "Cement and concrete research", Abril 2005, vol. 35, núm. 4, p. 641-646. |
dc.identifier.issn | 0008-8846 |
dc.identifier.uri | http://hdl.handle.net/2117/19187 |
dc.description.abstract | Potassium dawsonite is formed as an intermediate compound during the alkaline hydrolysis (AH) in calcium aluminate cements (CACs). A synthesis method of potassium dawsonite has been developed. The crystal structure of potassium dawsonite KAl(CO3)(OH)2 has been solved by direct methods from X-ray powder diffraction data and refined with the Rietveld method. It crystallises in the orthorhombic Cmcm space group with unit cells parameters a=6.3021(3) Å, b=11.9626(5) Å, c=5.6456(3) Å and Z=4. The structure consists of carboaluminate chains, formed by the basic unit [Al2(OH)4(CO3)2]2− arranged along the c axis. The carbonate groups are placed in an alternate manner at both sides of the carboaluminate chains. The carboaluminate chains are also held together by the K+ cations that are located in the middle of three such chains. Finally, the chemical reactions explaining the AH process in CACs are postulated. |
dc.format.extent | 6 p. |
dc.language.iso | eng |
dc.publisher | Elsevier |
dc.subject | Àrees temàtiques de la UPC::Edificació::Materials de construcció::Ciment |
dc.subject.lcsh | Cement |
dc.title | Synthesis and Crystal Structure Solution of Potassium Dawsonite: an intermediate compound in the alkaline hydrolysis of Calcium Aluminate Cements |
dc.type | Article |
dc.subject.lemac | Ciment |
dc.identifier.doi | 10.1016/j.cemconres.2004.04.018 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.sciencedirect.com/science/journal/00088846/35/4 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 638155 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Fernandez-Carrasco, L.; Puertas, F.; Blanco-Varela, M.; Vázquez, T.; Rius, J. |
local.citation.publicationName | Cement and concrete research |
local.citation.volume | 35 |
local.citation.number | 4 |
local.citation.startingPage | 641 |
local.citation.endingPage | 646 |
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