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

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...

Täydet tiedot

Tallennettuna:

Bibliografiset tiedot
Päätekijät:	Silva, Maristela Gomes da, Gomes, Vanessa
Aineistotyyppi:	Online
Kieli:	por
Julkaistu:	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2018
Linkit:	https://seer.ufrgs.br/ambienteconstruido/article/view/69657
Tagit:	Lisää tagi Ei tageja, Lisää ensimmäinen tagi!

id	ojs-article-69657
record_format	ojs
spelling	ojs-article-696572019-01-08T18:41:31Z The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications Silva, Maristela Gomes da Gomes, Vanessa concrete; blast furnace slag; breakwater structures; performance; LCA 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. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído CNPq FAPESP FINEP ArcelorMittal Tubarão (AMT) 2018-06-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://seer.ufrgs.br/ambienteconstruido/article/view/69657 Ambiente Construído; v. 18, n. 2 (2018): Edição especial sobre Tecnologia das Argamassas; 413-429 Ambiente Construído; v. 18, n. 2 (2018): Edição especial sobre Tecnologia das Argamassas; 413-429 Ambiente Construído; v. 18, n. 2 (2018): Edição especial sobre Tecnologia das Argamassas; 413-429 1678-8621 1415-8876 por https://seer.ufrgs.br/ambienteconstruido/article/view/69657/48364 Direitos autorais 2018 Ambiente Construído https://creativecommons.org/licenses/by/4.0
institution	Universidade Federal do Rio Grande do Sul
collection	OJS
language	por
format	Online
author	Silva, Maristela Gomes da Gomes, Vanessa
spellingShingle	Silva, Maristela Gomes da Gomes, Vanessa The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications
author_facet	Silva, Maristela Gomes da Gomes, Vanessa
author_sort	Silva, Maristela Gomes da
title	The contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications
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	contribution of life-cycle assessment to environmentally preferable concrete mix selection for breakwater applications
description	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.
publisher	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
publishDate	2018
url	https://seer.ufrgs.br/ambienteconstruido/article/view/69657
work_keys_str_mv	AT silvamaristelagomesda thecontributionoflifecycleassessmenttoenvironmentallypreferableconcretemixselectionforbreakwaterapplications AT gomesvanessa thecontributionoflifecycleassessmenttoenvironmentallypreferableconcretemixselectionforbreakwaterapplications AT silvamaristelagomesda contributionoflifecycleassessmenttoenvironmentallypreferableconcretemixselectionforbreakwaterapplications AT gomesvanessa contributionoflifecycleassessmenttoenvironmentallypreferableconcretemixselectionforbreakwaterapplications
_version_	1709370606543175680

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

Samankaltaisia teoksia