Evaluation of the influence of the degree of saturation, measuring time and use of a conductive paste on the determination of thermal conductivity of normal and lightweight concrete using the hot-wire method

The determination of thermal conductivity of cement-based materials is relevant from the perspective of buildings’ energy efficiency. The absence of unified tests for its measurement in mortars and concrete results in a heterogeneity of the data available in the literature. This work’s purpose is t...

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Autores principales:	D. Revuelta, J.L. García-Calvo, P. Carballosa, F. Pedrosa
Formato:	article
Lenguaje:	EN ES
Publicado:	Consejo Superior de Investigaciones Científicas 2021
Materias:	Concrete Physical properties Characterization Thermal conductivity Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/8b7830ba17844822b46dd80decde2642
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spelling	oai:doaj.org-article:8b7830ba17844822b46dd80decde26422021-12-01T14:08:12ZEvaluation of the influence of the degree of saturation, measuring time and use of a conductive paste on the determination of thermal conductivity of normal and lightweight concrete using the hot-wire method10.3989/mc.2021.036210465-27461988-3226https://doaj.org/article/8b7830ba17844822b46dd80decde26422021-08-01T00:00:00Zhttps://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2330https://doaj.org/toc/0465-2746https://doaj.org/toc/1988-3226 The determination of thermal conductivity of cement-based materials is relevant from the perspective of buildings’ energy efficiency. The absence of unified tests for its measurement in mortars and concrete results in a heterogeneity of the data available in the literature. This work’s purpose is to determine the relevant influence from a a statistical viewpoint that three factors; degree of saturation, measuring time and use of a conductive paste, have in the measurement of the conductivity using the hot-wire needle probe method in two concretes with different thermal behavior: standard-weight concrete and lightweight concrete. The results obtained allow for the establishment of recommendations for future researchers on the minimum information to be included in their reports of thermal conductivity of cement-based materials by the needle probe method, the need to treat outliers, the most favorable saturation conditions and measuring times, as well as the possible benefits of using conductive pastes. D. RevueltaJ.L. García-CalvoP. CarballosaF. PedrosaConsejo Superior de Investigaciones CientíficasarticleConcretePhysical propertiesCharacterizationThermal conductivityMaterials of engineering and construction. Mechanics of materialsTA401-492ENESMateriales de Construccion, Vol 71, Iss 344 (2021)
institution	DOAJ
collection	DOAJ
language	EN ES
topic	Concrete Physical properties Characterization Thermal conductivity Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Concrete Physical properties Characterization Thermal conductivity Materials of engineering and construction. Mechanics of materials TA401-492 D. Revuelta J.L. García-Calvo P. Carballosa F. Pedrosa Evaluation of the influence of the degree of saturation, measuring time and use of a conductive paste on the determination of thermal conductivity of normal and lightweight concrete using the hot-wire method
description	The determination of thermal conductivity of cement-based materials is relevant from the perspective of buildings’ energy efficiency. The absence of unified tests for its measurement in mortars and concrete results in a heterogeneity of the data available in the literature. This work’s purpose is to determine the relevant influence from a a statistical viewpoint that three factors; degree of saturation, measuring time and use of a conductive paste, have in the measurement of the conductivity using the hot-wire needle probe method in two concretes with different thermal behavior: standard-weight concrete and lightweight concrete. The results obtained allow for the establishment of recommendations for future researchers on the minimum information to be included in their reports of thermal conductivity of cement-based materials by the needle probe method, the need to treat outliers, the most favorable saturation conditions and measuring times, as well as the possible benefits of using conductive pastes.
format	article
author	D. Revuelta J.L. García-Calvo P. Carballosa F. Pedrosa
author_facet	D. Revuelta J.L. García-Calvo P. Carballosa F. Pedrosa
author_sort	D. Revuelta
title	Evaluation of the influence of the degree of saturation, measuring time and use of a conductive paste on the determination of thermal conductivity of normal and lightweight concrete using the hot-wire method
title_short	Evaluation of the influence of the degree of saturation, measuring time and use of a conductive paste on the determination of thermal conductivity of normal and lightweight concrete using the hot-wire method
title_full	Evaluation of the influence of the degree of saturation, measuring time and use of a conductive paste on the determination of thermal conductivity of normal and lightweight concrete using the hot-wire method
title_fullStr	Evaluation of the influence of the degree of saturation, measuring time and use of a conductive paste on the determination of thermal conductivity of normal and lightweight concrete using the hot-wire method
title_full_unstemmed	Evaluation of the influence of the degree of saturation, measuring time and use of a conductive paste on the determination of thermal conductivity of normal and lightweight concrete using the hot-wire method
title_sort	evaluation of the influence of the degree of saturation, measuring time and use of a conductive paste on the determination of thermal conductivity of normal and lightweight concrete using the hot-wire method
publisher	Consejo Superior de Investigaciones Científicas
publishDate	2021
url	https://doaj.org/article/8b7830ba17844822b46dd80decde2642
work_keys_str_mv	AT drevuelta evaluationoftheinfluenceofthedegreeofsaturationmeasuringtimeanduseofaconductivepasteonthedeterminationofthermalconductivityofnormalandlightweightconcreteusingthehotwiremethod AT jlgarciacalvo evaluationoftheinfluenceofthedegreeofsaturationmeasuringtimeanduseofaconductivepasteonthedeterminationofthermalconductivityofnormalandlightweightconcreteusingthehotwiremethod AT pcarballosa evaluationoftheinfluenceofthedegreeofsaturationmeasuringtimeanduseofaconductivepasteonthedeterminationofthermalconductivityofnormalandlightweightconcreteusingthehotwiremethod AT fpedrosa evaluationoftheinfluenceofthedegreeofsaturationmeasuringtimeanduseofaconductivepasteonthedeterminationofthermalconductivityofnormalandlightweightconcreteusingthehotwiremethod
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Evaluation of the influence of the degree of saturation, measuring time and use of a conductive paste on the determination of thermal conductivity of normal and lightweight concrete using the hot-wire method

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