Macroporous Mortars for Laying and Coating

Abstract The envelope of a building is responsible for its physical protection against external agents, including humidity and temperature. Thus, the present work seeks to evaluate the effect of air entraining admixtures (AEA) in mortars for laying and coating to improve their physical and thermal p...

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Autores principales:	Castro Mendes,Júlia, Pinto,Paloma Bárbara, Américo da Silva,Henrique Emanuel, Barreto,Rodrigo Rony, Kuster Moro,Taís, Fiorotti Peixoto,Ricardo André
Lenguaje:	English
Publicado:	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile 2019
Materias:	air-entraining admixture mortars macroporous cement-based composites capillarity built environment
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2019000100029
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spelling	oai:scielo:S0718-915X20190001000292019-05-22Macroporous Mortars for Laying and CoatingCastro Mendes,JúliaPinto,Paloma BárbaraAmérico da Silva,Henrique EmanuelBarreto,Rodrigo RonyKuster Moro,TaísFiorotti Peixoto,Ricardo André air-entraining admixture mortars macroporous cement-based composites capillarity built environment Abstract The envelope of a building is responsible for its physical protection against external agents, including humidity and temperature. Thus, the present work seeks to evaluate the effect of air entraining admixtures (AEA) in mortars for laying and coating to improve their physical and thermal performances. The AEA generates macropores, interrupting the system of canaliculi that allows the capillary absorption of water. The AEA used is based on biodegradable surfactant molecules of Linear Alkyl Benzene Sodium Sulfonate. Results compare physical tests (water absorption, capillary coefficient, specific gravity, and mechanical strength), and thermal evaluation (thermal conductivity and specific heat) from two mortars mixtures with varying levels of AEA. Scanning electron microscopy (SEM) of the pore system were also analysed. All mixtures studied presented higher workability and cohesion, reduced thermal conductivity, decreased specific heat, and a reduction in the effects of water absorption, capillary elevation and specific gravity (density). In this sense, the durability of mortars to humidity effect is potentially improved, along with several other properties. Therefore, this work seeks to contribute to the quality of built environments, as well as to promote the technological development of cement-based composites.info:eu-repo/semantics/openAccessEscuela de Construcción Civil, Pontificia Universidad Católica de ChileRevista de la construcción v.18 n.1 20192019-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2019000100029en10.7764/rdlc.18.1.29
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	air-entraining admixture mortars macroporous cement-based composites capillarity built environment
spellingShingle	air-entraining admixture mortars macroporous cement-based composites capillarity built environment Castro Mendes,Júlia Pinto,Paloma Bárbara Américo da Silva,Henrique Emanuel Barreto,Rodrigo Rony Kuster Moro,Taís Fiorotti Peixoto,Ricardo André Macroporous Mortars for Laying and Coating
description	Abstract The envelope of a building is responsible for its physical protection against external agents, including humidity and temperature. Thus, the present work seeks to evaluate the effect of air entraining admixtures (AEA) in mortars for laying and coating to improve their physical and thermal performances. The AEA generates macropores, interrupting the system of canaliculi that allows the capillary absorption of water. The AEA used is based on biodegradable surfactant molecules of Linear Alkyl Benzene Sodium Sulfonate. Results compare physical tests (water absorption, capillary coefficient, specific gravity, and mechanical strength), and thermal evaluation (thermal conductivity and specific heat) from two mortars mixtures with varying levels of AEA. Scanning electron microscopy (SEM) of the pore system were also analysed. All mixtures studied presented higher workability and cohesion, reduced thermal conductivity, decreased specific heat, and a reduction in the effects of water absorption, capillary elevation and specific gravity (density). In this sense, the durability of mortars to humidity effect is potentially improved, along with several other properties. Therefore, this work seeks to contribute to the quality of built environments, as well as to promote the technological development of cement-based composites.
author	Castro Mendes,Júlia Pinto,Paloma Bárbara Américo da Silva,Henrique Emanuel Barreto,Rodrigo Rony Kuster Moro,Taís Fiorotti Peixoto,Ricardo André
author_facet	Castro Mendes,Júlia Pinto,Paloma Bárbara Américo da Silva,Henrique Emanuel Barreto,Rodrigo Rony Kuster Moro,Taís Fiorotti Peixoto,Ricardo André
author_sort	Castro Mendes,Júlia
title	Macroporous Mortars for Laying and Coating
title_short	Macroporous Mortars for Laying and Coating
title_full	Macroporous Mortars for Laying and Coating
title_fullStr	Macroporous Mortars for Laying and Coating
title_full_unstemmed	Macroporous Mortars for Laying and Coating
title_sort	macroporous mortars for laying and coating
publisher	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2019000100029
work_keys_str_mv	AT castromendesjulia macroporousmortarsforlayingandcoating AT pintopalomabarbara macroporousmortarsforlayingandcoating AT americodasilvahenriqueemanuel macroporousmortarsforlayingandcoating AT barretorodrigorony macroporousmortarsforlayingandcoating AT kustermorotais macroporousmortarsforlayingandcoating AT fiorottipeixotoricardoandre macroporousmortarsforlayingandcoating
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Macroporous Mortars for Laying and Coating

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