Inclusion of prevention scenarios in LCA of construction waste management

PURPOSE: Life-Cycle Assessment (LCA) has been applied extensively for the environmental evaluation of solid waste management. However, there is a lack of approaches based on the LCA perspective to deal with waste prevention, which constitutes the first and overriding principle of waste management hi...

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Detalhes bibliográficos
Autores: Bizcocho Tocón, Nuria, Llatas, Carmen
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Recursos:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/155319
Acesso em linha:https://hdl.handle.net/11441/155319
https://doi.org/10.1007/s11367-018-1462-8
Access Level:acceso abierto
Palavra-chave:Life-Cycle Assessment
Construction waste
Waste management scenarios
Waste prevention activities
Waste hierarchy
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spelling Inclusion of prevention scenarios in LCA of construction waste managementBizcocho Tocón, NuriaLlatas, CarmenLife-Cycle AssessmentConstruction wasteWaste management scenariosWaste prevention activitiesWaste hierarchyPURPOSE: Life-Cycle Assessment (LCA) has been applied extensively for the environmental evaluation of solid waste management. However, there is a lack of approaches based on the LCA perspective to deal with waste prevention, which constitutes the first and overriding principle of waste management hierarchy, both in relation to solid waste in general and to construction waste (CW) in particular. This paper explores the possibilities of the LCA for the evaluation of CW management that include prevention activities. METHODS: The functional unit and system boundaries used in the traditional LCA of CW management are redefined to include prevention scenarios; this leads to two methodological options (Options 1 and 2). From the above, general and simplified models were developed to compare non-prevention with prevention scenarios. The general model evaluates CW management scenarios that consider several CW fractions, while the simplified model is applicable to the analysis of one separated CW fraction. A case study was carried out on new buildings in Spain. Optimization and replacement measures of prevention were developed and four CW management scenarios were compared using the general model. The simplified model was applied to the management of 1 tonne of concrete waste. RESULTS AND DISCUSSION: The impact category of climate change was evaluated. Prevention was the most favourable scenario, since, in addition to reducing the amount of CW generated it also reduced CO2 emissions. Regarding the usefulness of each methodological option, Option 1 is more suitable for those LCAs that are aimed towards helping in the decision-making process regarding preventive measures during the design phase, as it enables the actual impact of CW to be monitored in construction work, a building element, or a separate fraction. However, Option 2 facilitates the interpretation of those loads saved by means of not generating CW in prevention scenarios, and this option is hence more useful in LCAs whose objective is the selection of the optimal type of CW management. CONCLUSIONS: Most CW prevention studies in the reviewed literature are focused on the reduction of the quantities of waste. The methodological approaches in this study allow a greater insight into the effects of prevented CW on the environment. The proposed models could support the preparation of national waste programs, and could serve as an instrumental tool to simulate the environmental impacts of CW management scenarios that include waste prevention.Junta de Andalucía. SUBJA09-031SpringerConstrucciones Arquitectónicas ITEP986: Digital Architecture for Sustainability Lab (Datus-Lab)Junta de Andalucía2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/155319https://doi.org/10.1007/s11367-018-1462-8reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésInternational Journal Of Life Cycle Assessment, 24 (3), 468-484.SUBJA09-031https://dx.doi.org/10.1007/s11367-018-1462-8info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1553192026-06-17T12:51:07Z
dc.title.none.fl_str_mv Inclusion of prevention scenarios in LCA of construction waste management
title Inclusion of prevention scenarios in LCA of construction waste management
spellingShingle Inclusion of prevention scenarios in LCA of construction waste management
Bizcocho Tocón, Nuria
Life-Cycle Assessment
Construction waste
Waste management scenarios
Waste prevention activities
Waste hierarchy
title_short Inclusion of prevention scenarios in LCA of construction waste management
title_full Inclusion of prevention scenarios in LCA of construction waste management
title_fullStr Inclusion of prevention scenarios in LCA of construction waste management
title_full_unstemmed Inclusion of prevention scenarios in LCA of construction waste management
title_sort Inclusion of prevention scenarios in LCA of construction waste management
dc.creator.none.fl_str_mv Bizcocho Tocón, Nuria
Llatas, Carmen
author Bizcocho Tocón, Nuria
author_facet Bizcocho Tocón, Nuria
Llatas, Carmen
author_role author
author2 Llatas, Carmen
author2_role author
dc.contributor.none.fl_str_mv Construcciones Arquitectónicas I
TEP986: Digital Architecture for Sustainability Lab (Datus-Lab)
Junta de Andalucía
dc.subject.none.fl_str_mv Life-Cycle Assessment
Construction waste
Waste management scenarios
Waste prevention activities
Waste hierarchy
topic Life-Cycle Assessment
Construction waste
Waste management scenarios
Waste prevention activities
Waste hierarchy
description PURPOSE: Life-Cycle Assessment (LCA) has been applied extensively for the environmental evaluation of solid waste management. However, there is a lack of approaches based on the LCA perspective to deal with waste prevention, which constitutes the first and overriding principle of waste management hierarchy, both in relation to solid waste in general and to construction waste (CW) in particular. This paper explores the possibilities of the LCA for the evaluation of CW management that include prevention activities. METHODS: The functional unit and system boundaries used in the traditional LCA of CW management are redefined to include prevention scenarios; this leads to two methodological options (Options 1 and 2). From the above, general and simplified models were developed to compare non-prevention with prevention scenarios. The general model evaluates CW management scenarios that consider several CW fractions, while the simplified model is applicable to the analysis of one separated CW fraction. A case study was carried out on new buildings in Spain. Optimization and replacement measures of prevention were developed and four CW management scenarios were compared using the general model. The simplified model was applied to the management of 1 tonne of concrete waste. RESULTS AND DISCUSSION: The impact category of climate change was evaluated. Prevention was the most favourable scenario, since, in addition to reducing the amount of CW generated it also reduced CO2 emissions. Regarding the usefulness of each methodological option, Option 1 is more suitable for those LCAs that are aimed towards helping in the decision-making process regarding preventive measures during the design phase, as it enables the actual impact of CW to be monitored in construction work, a building element, or a separate fraction. However, Option 2 facilitates the interpretation of those loads saved by means of not generating CW in prevention scenarios, and this option is hence more useful in LCAs whose objective is the selection of the optimal type of CW management. CONCLUSIONS: Most CW prevention studies in the reviewed literature are focused on the reduction of the quantities of waste. The methodological approaches in this study allow a greater insight into the effects of prevented CW on the environment. The proposed models could support the preparation of national waste programs, and could serve as an instrumental tool to simulate the environmental impacts of CW management scenarios that include waste prevention.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/155319
https://doi.org/10.1007/s11367-018-1462-8
url https://hdl.handle.net/11441/155319
https://doi.org/10.1007/s11367-018-1462-8
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv International Journal Of Life Cycle Assessment, 24 (3), 468-484.
SUBJA09-031
https://dx.doi.org/10.1007/s11367-018-1462-8
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
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