Earth construction in Brazil: environmental assessment of rammed earth

This paper aimed to evaluate potential environmental impacts in the life cycle of the rammed earth construction technique, considering different configurations normally used in Brazil. Three contents of the chemical stabilizer, Portland cement, were evaluated at 5%, 10% and 15% (by mass). We used th...

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Hauptverfasser:	Caldas, Lucas Rosse, Martins, Adriana Paiva de Souza, Toledo Filho, Romildo Dias
Format:	Online
Sprache:	por
Veröffentlicht:	Universidade Estadual de Campinas 2021
Online Zugang:	https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8656279
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spelling	oai:ojs.periodicos.sbu.unicamp.br:article-86562792021-03-22T14:46:45Z Earth construction in Brazil: environmental assessment of rammed earth Construção com terra no Brasil: avaliação ambiental da taipa de pilão Caldas, Lucas Rosse Martins, Adriana Paiva de Souza Toledo Filho, Romildo Dias Construção com terra ACV Parametrização Earth construction LCA Parameterization This paper aimed to evaluate potential environmental impacts in the life cycle of the rammed earth construction technique, considering different configurations normally used in Brazil. Three contents of the chemical stabilizer, Portland cement, were evaluated at 5%, 10% and 15% (by mass). We used the Life Cycle Assessment (LCA) methodology, considering the production and transportation stages of the raw materials, construction, and end-of-life of the rammed earth wall. The rammed earth configurations were compared with ceramic block masonry, concrete block masonry and on-site cast concrete wall. The results showed that the rammed earth is more advantageous, especially when the criteria of thermal capacity and weighted noise reduction index are used in the choice of the functional unit. The production of cement and wood formwork were the items that most influenced the environmental impacts in the rammed earth life cycle. Finally, it was possible to obtain the potential environmental impacts of the rammed earth life cycle parameterized by the wall thickness and cement content. Equations obtained by regression were presented. We also proposed recommendations for environmental improvement of rammed earth in Brazil. Este trabalho teve como objetivo avaliar potenciais impactos ambientais no ciclo de vida da técnica construtiva taipa de pilão, considerando diferentes configurações normalmente verificadas no Brasil. Foram avaliados três teores de cimento Portland: 5%, 10% e 15% (em massa). A metodologia de Avaliação do Ciclo de Vida (ACV) foi empregada, sendo consideradas as etapas de produção e transporte dos materiais constituintes, construção e fim de vida da taipa. As diferentes configurações dos sistemas de taipa de pilão foram comparadas com alvenaria de blocos cerâmicos estruturais, de blocos de concreto estruturais e parede de concreto moldada no local. Os resultados mostraram que a taipa de pilão é mais vantajosa principalmente quando os critérios de capacidade térmica e Índice de redução sonora ponderado são utilizados na escolha da unidade funcional. A produção do cimento e da forma de madeira foram os itens que mais influenciaram nos impactos ambientais no ciclo de vida da taipa de pilão. Ao final, foi possível obter os potenciais impactos ambientais do ciclo de vida dessa técnica construtiva parametrizados pela espessura da parede e teor de cimento, sendo apresentadas equações obtidas via regressão. Foram também propostas recomendações para melhoria ambiental da taipa de pilão no Brasil. Universidade Estadual de Campinas 2021-07-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Text Texto application/pdf https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8656279 10.20396/parc.v12i00.8656279 PARC Pesquisa em Arquitetura e Construção; Vol. 12 (2021): Continous publication; e021015 PARC Pesquisa em Arquitetura e Construção; Vol. 12 (2021): Publicação contínua; e021015 PARC Pesquisa em Arquitetura e Construção; v. 12 (2021): Publicação contínua; e021015 1980-6809 por https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8656279/27023 Brazil: Contemporary Brasil; Contemporâneo Copyright (c) 2021 PARC Pesquisa em Arquitetura e Construção https://creativecommons.org/licenses/by/4.0
institution	Universidade Estadual de Campinas
collection	OJS
language	por
format	Online
author	Caldas, Lucas Rosse Martins, Adriana Paiva de Souza Toledo Filho, Romildo Dias
spellingShingle	Caldas, Lucas Rosse Martins, Adriana Paiva de Souza Toledo Filho, Romildo Dias Earth construction in Brazil: environmental assessment of rammed earth
author_facet	Caldas, Lucas Rosse Martins, Adriana Paiva de Souza Toledo Filho, Romildo Dias
author_sort	Caldas, Lucas Rosse
title	Earth construction in Brazil: environmental assessment of rammed earth
title_short	Earth construction in Brazil: environmental assessment of rammed earth
title_full	Earth construction in Brazil: environmental assessment of rammed earth
title_fullStr	Earth construction in Brazil: environmental assessment of rammed earth
title_full_unstemmed	Earth construction in Brazil: environmental assessment of rammed earth
title_sort	earth construction in brazil: environmental assessment of rammed earth
description	This paper aimed to evaluate potential environmental impacts in the life cycle of the rammed earth construction technique, considering different configurations normally used in Brazil. Three contents of the chemical stabilizer, Portland cement, were evaluated at 5%, 10% and 15% (by mass). We used the Life Cycle Assessment (LCA) methodology, considering the production and transportation stages of the raw materials, construction, and end-of-life of the rammed earth wall. The rammed earth configurations were compared with ceramic block masonry, concrete block masonry and on-site cast concrete wall. The results showed that the rammed earth is more advantageous, especially when the criteria of thermal capacity and weighted noise reduction index are used in the choice of the functional unit. The production of cement and wood formwork were the items that most influenced the environmental impacts in the rammed earth life cycle. Finally, it was possible to obtain the potential environmental impacts of the rammed earth life cycle parameterized by the wall thickness and cement content. Equations obtained by regression were presented. We also proposed recommendations for environmental improvement of rammed earth in Brazil.
publisher	Universidade Estadual de Campinas
publishDate	2021
url	https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8656279
work_keys_str_mv	AT caldaslucasrosse earthconstructioninbrazilenvironmentalassessmentoframmedearth AT martinsadrianapaivadesouza earthconstructioninbrazilenvironmentalassessmentoframmedearth AT toledofilhoromildodias earthconstructioninbrazilenvironmentalassessmentoframmedearth AT caldaslucasrosse construcaocomterranobrasilavaliacaoambientaldataipadepilao AT martinsadrianapaivadesouza construcaocomterranobrasilavaliacaoambientaldataipadepilao AT toledofilhoromildodias construcaocomterranobrasilavaliacaoambientaldataipadepilao
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Earth construction in Brazil: environmental assessment of rammed earth

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