Improvement of thermal efficiency in cement mortars by using synthetic feldspars

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Show simple item record Torres Carrasco, Manuel Enríquez, E. Terrón-Menoyo, L. Cabrera, M.J. Muñoz, D. Fernández, J.F. 2021-03-01T09:57:41Z 2021-02-01
dc.identifier.bibliographicCitation Construction and building materials Vol.269, 121279, Feb. 2021, 7 pp.
dc.identifier.issn 0950-0618
dc.description.abstract The use of white cements as a building material is widely employed due to its high whiteness and reflectance. However, building materials should adopt better thermal insulation characteristics to contribute for a significant urban heat-islands mitigation. In this work, synthetic feldspar has been evaluated as partial and total replacement of sand in white cement mortars. Thermal, mechanical, and optical properties of these new mortars are characterized by thermal conductivity, compression resistance test and reflectance-colorimetry, respectively. The replacement of sand by synthetic feldspar allows to obtain white mortars having [almost equal to]18% improvement in solar reflectance. Experiment under solar irradiance of mortars having synthetic feldspars reduce the surface heating of the mortar in 25% and the heating transmission to the rear of the mortar in >55%. Moreover, the high crystallinity of the synthetic feldspar reduces the mortar expansion due alkali-silica reactions (ASR). Improvement in reflectance and thermal conductivity resistance of white cement mortar having synthetic feldspar opens a wide range of building material applications.
dc.description.sponsorship The authors express their thanks to the Project MAT-2017-86450-C4-1-R, CSIC NANOMIND project CSIC2015-60E068 and projects CDTI (IDI-20130894 and IDI-20161120) for their financial support. Dra. E. Enríquez is indebted to MINECO for a "Torres Quevedo" contract (ref: PTQ-14-07289), which is co-financed with European Social Funds. Dr. M. Torres-Carrasco is also indebted to MINECO for a postdoctoral fellowship "Juan de la Cierva-Formación" (ref: FJCI-2016-28488).
dc.format.extent 7
dc.language.iso eng
dc.publisher Elsevier Ltd.
dc.rights © 2020 Elsevier Ltd. All rights reserved.
dc.rights This work is licensed under a Creative Commons Attribution- NonCommercial-NoDerivatives 4.0 International License.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Mortars
dc.subject.other Feldspar
dc.subject.other Sustainability
dc.subject.other Thermal properties
dc.title Improvement of thermal efficiency in cement mortars by using synthetic feldspars
dc.type article
dc.subject.eciencia Materiales
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. MAT-2017-86450-C4-1-R
dc.relation.projectID Gobierno de España. IDI-20130894
dc.relation.projectID Gobierno de España. IDI-20161120
dc.relation.projectID Gobierno de España. PTQ-14-07289
dc.relation.projectID Gobierno de España. FJCI-2016-28488
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 121279
dc.identifier.publicationlastpage 7
dc.identifier.publicationtitle CONSTRUCTION AND BUILDING MATERIALS
dc.identifier.publicationvolume 269
dc.identifier.uxxi AR/0000026299
carlosiii.embargo.liftdate 2023-02-01
carlosiii.embargo.terms 2023-02-01
dc.contributor.funder Ministerio de Economía y Competitividad (España)
dc.contributor.funder Ministerio de Ciencia e Innovación (España)
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