The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications

Detalhes bibliográficos
Autor(a) principal: Silva,Maristela Gomes da
Data de Publicação: 2018
Outros Autores: Gomes,Vanessa, Saade,Marcella Ruschi Mendes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ambiente construído (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-86212018000200413
Resumo: Abstract Life cycle assessment (LCA) provides a comprehensive framework for positioning low energy and global warming potential alternatives regarding Portland cement and concrete. Published LCA work on alkali-activated cements is, however, relatively limited. In this paper, we illustrate how LCA critically supports concrete technological studies in the search for low impact concrete mixes. Previous research on breakwater applications explored replacing a low-clinker Portland cement and natural aggregates with seven different alkali-activated blast furnace slag (bfs) binder systems and with coarse and granulated bfs aggregates. Its outcome suggested a sodium silicate-activated bfs formulation as the best match between concrete properties and environmental regulation compliance. To validate this outcome through LCA, our cradle to gate assessments followed ISO 14044 (INTERNATIONAL…, 2006b) and used Ecoinvent v.2.2 and CML baseline 2001 v.2.05. We adopted the ‘net avoided burden approach’ to handle multifunctionality intrinsic to by-product-based AAC. Whilst sodium silicate-activated mixes rivaled the reference regarding GWP, impacts in several categories were increased. LCA highlighted the implications of driving mix selection by focusing on a single environmental impact category.
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spelling The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applicationsConcreteBlast furnace slagBreakwatersPerformanceLCAAbstract Life cycle assessment (LCA) provides a comprehensive framework for positioning low energy and global warming potential alternatives regarding Portland cement and concrete. Published LCA work on alkali-activated cements is, however, relatively limited. In this paper, we illustrate how LCA critically supports concrete technological studies in the search for low impact concrete mixes. Previous research on breakwater applications explored replacing a low-clinker Portland cement and natural aggregates with seven different alkali-activated blast furnace slag (bfs) binder systems and with coarse and granulated bfs aggregates. Its outcome suggested a sodium silicate-activated bfs formulation as the best match between concrete properties and environmental regulation compliance. To validate this outcome through LCA, our cradle to gate assessments followed ISO 14044 (INTERNATIONAL…, 2006b) and used Ecoinvent v.2.2 and CML baseline 2001 v.2.05. We adopted the ‘net avoided burden approach’ to handle multifunctionality intrinsic to by-product-based AAC. Whilst sodium silicate-activated mixes rivaled the reference regarding GWP, impacts in several categories were increased. LCA highlighted the implications of driving mix selection by focusing on a single environmental impact category.Associação Nacional de Tecnologia do Ambiente Construído - ANTAC2018-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-86212018000200413Ambiente Construído v.18 n.2 2018reponame:Ambiente construído (Online)instname:Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)instacron:ANTAC10.1590/s1678-86212018000200262info:eu-repo/semantics/openAccessSilva,Maristela Gomes daGomes,VanessaSaade,Marcella Ruschi Mendeseng2018-08-24T00:00:00Zoai:scielo:S1678-86212018000200413Revistahttps://seer.ufrgs.br/ambienteconstruidohttps://old.scielo.br/oai/scielo-oai.php||ambienteconstruido@ufrgs.br1678-86211415-8876opendoar:2018-08-24T00:00Ambiente construído (Online) - Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)false
dc.title.none.fl_str_mv The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications
title The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications
spellingShingle The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications
Silva,Maristela Gomes da
Concrete
Blast furnace slag
Breakwaters
Performance
LCA
title_short The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications
title_full The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications
title_fullStr The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications
title_full_unstemmed The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications
title_sort The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications
author Silva,Maristela Gomes da
author_facet Silva,Maristela Gomes da
Gomes,Vanessa
Saade,Marcella Ruschi Mendes
author_role author
author2 Gomes,Vanessa
Saade,Marcella Ruschi Mendes
author2_role author
author
dc.contributor.author.fl_str_mv Silva,Maristela Gomes da
Gomes,Vanessa
Saade,Marcella Ruschi Mendes
dc.subject.por.fl_str_mv Concrete
Blast furnace slag
Breakwaters
Performance
LCA
topic Concrete
Blast furnace slag
Breakwaters
Performance
LCA
description Abstract Life cycle assessment (LCA) provides a comprehensive framework for positioning low energy and global warming potential alternatives regarding Portland cement and concrete. Published LCA work on alkali-activated cements is, however, relatively limited. In this paper, we illustrate how LCA critically supports concrete technological studies in the search for low impact concrete mixes. Previous research on breakwater applications explored replacing a low-clinker Portland cement and natural aggregates with seven different alkali-activated blast furnace slag (bfs) binder systems and with coarse and granulated bfs aggregates. Its outcome suggested a sodium silicate-activated bfs formulation as the best match between concrete properties and environmental regulation compliance. To validate this outcome through LCA, our cradle to gate assessments followed ISO 14044 (INTERNATIONAL…, 2006b) and used Ecoinvent v.2.2 and CML baseline 2001 v.2.05. We adopted the ‘net avoided burden approach’ to handle multifunctionality intrinsic to by-product-based AAC. Whilst sodium silicate-activated mixes rivaled the reference regarding GWP, impacts in several categories were increased. LCA highlighted the implications of driving mix selection by focusing on a single environmental impact category.
publishDate 2018
dc.date.none.fl_str_mv 2018-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-86212018000200413
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-86212018000200413
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1678-86212018000200262
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Nacional de Tecnologia do Ambiente Construído - ANTAC
publisher.none.fl_str_mv Associação Nacional de Tecnologia do Ambiente Construído - ANTAC
dc.source.none.fl_str_mv Ambiente Construído v.18 n.2 2018
reponame:Ambiente construído (Online)
instname:Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)
instacron:ANTAC
instname_str Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)
instacron_str ANTAC
institution ANTAC
reponame_str Ambiente construído (Online)
collection Ambiente construído (Online)
repository.name.fl_str_mv Ambiente construído (Online) - Associação Nacional de Tecnologia do Ambiente Construído (ANTAC)
repository.mail.fl_str_mv ||ambienteconstruido@ufrgs.br
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