Heat flow characterization in masonry with EVA blocks

Footwear manufacturing generates different types of waste, and Ethylene Vinyl Acetate (EVA) is among them. Using such residues as lightweight aggregates in cement blocks production for vertical sealing in buildings is an alternative to reduce their environmental impact. This paper aims to characteri...

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Auteurs principaux:	Gomes, Emmily Gérsica Santos, Melo, Aluísio Braz de
Format:	Online
Langue:	por
Publié:	Universidade Estadual de Campinas 2018
Accès en ligne:	https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8651603
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id	oai:ojs.periodicos.sbu.unicamp.br:article-8651603
record_format	ojs
institution	Universidade Estadual de Campinas
collection	OJS
language	por
format	Online
author	Gomes, Emmily Gérsica Santos Melo, Aluísio Braz de
spellingShingle	Gomes, Emmily Gérsica Santos Melo, Aluísio Braz de Heat flow characterization in masonry with EVA blocks
author_facet	Gomes, Emmily Gérsica Santos Melo, Aluísio Braz de
author_sort	Gomes, Emmily Gérsica Santos
title	Heat flow characterization in masonry with EVA blocks
title_short	Heat flow characterization in masonry with EVA blocks
title_full	Heat flow characterization in masonry with EVA blocks
title_fullStr	Heat flow characterization in masonry with EVA blocks
title_full_unstemmed	Heat flow characterization in masonry with EVA blocks
title_sort	heat flow characterization in masonry with eva blocks
description	Footwear manufacturing generates different types of waste, and Ethylene Vinyl Acetate (EVA) is among them. Using such residues as lightweight aggregates in cement blocks production for vertical sealing in buildings is an alternative to reduce their environmental impact. This paper aims to characterize heat flow in envelopes of EVA blocks, through a comparative analysis between samples built with EVA blocks and other conventional component types (ceramic bricks and concrete blocks). The heat flow characterization followed several steps, amongst which the following stand out: determine the temperature difference (ΔT) between the surfaces of each sample through tests conducted in a thermal chamber and calculate the thermal resistance (RT), as well as other properties addressed in NBR15220-2 (ABNT, 2005b). The experimental (ΔT) and calculated (RT) results were applied to a specific equation, which was used to determine the heat flow through the samples. The analysis demonstrated that the lowest heat flow (1,467 W) among the cement block samples corresponded to blocks with the highest EVA percentage (80%) in the composite, whose value was close to the one verified for samples built with ceramic bricks (1,276 W). The procedures adopted to set the heat flow through the samples showed differences between the concrete and ceramic block types, when considering their different geometries (internal voids and thicknesses), materials and EVA waste content.
publisher	Universidade Estadual de Campinas
publishDate	2018
url	https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8651603
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spelling	oai:ojs.periodicos.sbu.unicamp.br:article-86516032018-12-01T10:38:19Z Heat flow characterization in masonry with EVA blocks Caracterização do fluxo de calor em alvenaria com blocos EVA Gomes, Emmily Gérsica Santos Melo, Aluísio Braz de Bloco EVA. Temperatura. Resistência térmica. Fluxo de calor. EVA block. Temperature. Thermal resistance. Heat flow. Footwear manufacturing generates different types of waste, and Ethylene Vinyl Acetate (EVA) is among them. Using such residues as lightweight aggregates in cement blocks production for vertical sealing in buildings is an alternative to reduce their environmental impact. This paper aims to characterize heat flow in envelopes of EVA blocks, through a comparative analysis between samples built with EVA blocks and other conventional component types (ceramic bricks and concrete blocks). The heat flow characterization followed several steps, amongst which the following stand out: determine the temperature difference (ΔT) between the surfaces of each sample through tests conducted in a thermal chamber and calculate the thermal resistance (RT), as well as other properties addressed in NBR15220-2 (ABNT, 2005b). The experimental (ΔT) and calculated (RT) results were applied to a specific equation, which was used to determine the heat flow through the samples. The analysis demonstrated that the lowest heat flow (1,467 W) among the cement block samples corresponded to blocks with the highest EVA percentage (80%) in the composite, whose value was close to the one verified for samples built with ceramic bricks (1,276 W). The procedures adopted to set the heat flow through the samples showed differences between the concrete and ceramic block types, when considering their different geometries (internal voids and thicknesses), materials and EVA waste content. Vários tipos de resíduos são gerados na fabricação de calçados, entre eles, os de Etileno Acetato de Vinila (EVA). Uma alternativa para reduzir o impacto ambiental no tratamento de tais resíduos é utilizá-los como agregados leves na produção de blocos cimentícios para vedações verticais de edificações. O presente artigo relata uma pesquisa que visa caracterizar o fluxo de calor através de vedações executadas com os blocos EVA, baseada em análises comparativas entre amostras construídas com blocos EVA e outros tipos de componentes convencionais (tijolos cerâmicos e blocos de concreto). A caracterização do fluxo de calor seguiu vários passos, dentre os quais se destaca: determinar a diferença de temperatura (ΔT) entre as faces de cada amostra em ensaios na câmara térmica; e calcular a resistência térmica (RT) e demais propriedades previstas na NBR 15220-2 (ABNT, 2005b). Os resultados experimentais (ΔT) e calculados (RT) obtidos foram aplicados numa equação específica, utilizada para determinar o fluxo de calor através da amostra. A análise demonstra que o menor fluxo de calor (1.467 W) entre as amostras com blocos cimentícios corresponde ao maior percentual de EVA (80%) presente no compósito, cujo valor foi próximo ao verificado pela amostra executada com tijolos cerâmicos (1.276 W). Os procedimentos adotados para determinar o fluxo de calor através das amostras evidenciaram as diferenças entre os tipos de blocos cimentícios e cerâmicos, considerando suas diferentes geometrias (vazios internos e espessuras), materiais e teor de resíduos de EVA. Universidade Estadual de Campinas 2018-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Experimental research; analysis for calculations Pesquisa experimental; Análise por cálculos application/pdf https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8651603 10.20396/parc.v9i4.8651603 PARC Pesquisa em Arquitetura e Construção; Vol. 9 No. 4 (2018): O desempenho em foco; 290-304 PARC Pesquisa em Arquitetura e Construção; Vol. 9 Núm. 4 (2018): O desempenho em foco; 290-304 PARC Pesquisa em Arquitetura e Construção; v. 9 n. 4 (2018): O desempenho em foco; 290-304 1980-6809 por https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8651603/18827 Copyright (c) 2018 PARC Pesquisa em Arquitetura e Construção

Heat flow characterization in masonry with EVA blocks

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