Gypsum crust as a source of calcium for the consolidation of carbonate stones using a calcium phosphate-based consolidant

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dc.contributor.authorMolina, Eduardo
dc.contributor.authorRueda Quero, Lucia
dc.contributor.authorBenavente, David
dc.contributor.authorBurgos Cara, Alejandro
dc.contributor.authorRuiz Agudo, Encarnacion
dc.contributor.authorCultrone, Giuseppe
dc.date.accessioned2024-01-10T13:13:24Z
dc.date.available2024-01-10T13:13:24Z
dc.date.issued2017
dc.description.abstractThe high levels of atmospheric pollution in cities today are causing the decay of natural building stone, especially due to the formation of gypsum crusts on carbonate stones. For this reason we have assessed the efficacy of using the gypsum crust as an alternative source of calcium in the consolidation of building stone via the formation of calcium phosphates. Samples of Arenisca Ronda (southern Spain) were altered to develop a gypsum crust on the surface for subsequent application of a cellulose poultice with a solution of dibasic ammonium phosphate 3 M (DAP) at different application times. The best results were obtained by the samples treated for 60 min and they have indicated that the application time and the water saturation degree of the poultice affect the amount of gypsum removed and the quantity of fissures on the consolidant film. On the other hand, the DAP concentration of the solution and the pH controlled the calcium phosphate precipitation phases. The habit of the calcium phosphate crystals evolve over the time tending to a homogenization of the consolidant film. This procedure offers an important alternative for the treatment of altered carbonate stones, in which the stone can be cleaned and consolidated in a single application. (C) 2017 Elsevier Ltd. All rights reserved.
dc.description.funderJunta de Andalucia
dc.description.funderSpanish Government
dc.description.funderSpanish Government (Ministerio de Economia y Competitividad)
dc.description.funderJunta de Andalucia
dc.fechaingreso.objetodigital2024-04-02
dc.format.extent14 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.conbuildmat.2017.03.155
dc.identifier.eissn1879-0526
dc.identifier.issn0950-0618
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2017.03.155
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78300
dc.identifier.wosidWOS:000401042400027
dc.information.autorucIngeniería;Molina E;S/I;213910
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final311
dc.pagina.inicio298
dc.publisherELSEVIER SCI LTD
dc.revistaCONSTRUCTION AND BUILDING MATERIALS
dc.rightsacceso restringido
dc.subjectGypsum crust
dc.subjectCleaning
dc.subjectConsolidation
dc.subjectCarbonate stone
dc.subjectCalcium phosphates
dc.subjectPRECIPITATION
dc.subjectHYDROXYAPATITE
dc.subjectPOLLUTION
dc.subjectBRUSHITE
dc.subjectHERITAGE
dc.subjectSILICATE
dc.subjectREMOVAL
dc.subjectSURFACE
dc.subjectPH
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleGypsum crust as a source of calcium for the consolidation of carbonate stones using a calcium phosphate-based consolidant
dc.typeartículo
dc.volumen143
sipa.codpersvinculados213910
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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