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Assessing Embodied Energy and Greenhouse Gas Emissions in Infrastructure Projects
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0002-1172-5694
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0001-9524-4814
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0002-4695-5369
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0002-5661-5237
2015 (English)In: Buildings, ISSN 2075-5309, E-ISSN 2075-5309, Vol. 5, no 4, p. 1156-1170Article in journal (Refereed) Published
Abstract [en]

Greenhouse gas (GHG) emissions from construction processes are a serious concern globally. Of the several approaches taken to assess emissions, Life Cycle Assessment (LCA) based methods do not just take into account the construction phase, but consider all phases of the life cycle of the construction. However, many current LCA approaches make general assumptions regarding location and effects, which do not do justice to the inherent dynamics of normal construction projects. This study presents a model to assess the embodied energy and associated GHG emissions, which is specifically adapted to address the dynamics of infrastructure construction projects. The use of the model is demonstrated on the superstructure of a prefabricated bridge. The findings indicate that Building Information Models/Modeling (BIM) and Discrete Event Simulation (DES) can be used to efficiently generate project-specific data, which is needed for estimating the embodied energy and associated GHG emissions in construction settings. This study has implications for the advancement of LCA-based methods (as well as project management) as a way of assessing embodied energy and associated GHG emissions related to construction.

Place, publisher, year, edition, pages
2015. Vol. 5, no 4, p. 1156-1170
National Category
Construction Management
Research subject
Construction Engineering and Management
Identifiers
URN: urn:nbn:se:ltu:diva-6983DOI: 10.3390/buildings5041156Local ID: 55080bc0-6a9e-4588-9916-16890c00664bOAI: oai:DiVA.org:ltu-6983DiVA: diva2:979869
Note
Validerad; 2015; Nivå 1; 20151016 (jankra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
In thesis
1. Reducing Carbon Dioxide Emissions in Transport Infrastructure Projects
Open this publication in new window or tab >>Reducing Carbon Dioxide Emissions in Transport Infrastructure Projects
2017 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

On- and off-site construction activities during transport infrastructure projectsare major contributors to greenhouse gas (GHG) emissions. The SwedishTransport Administration (STA) has stated the goal of gradually reducing itsemissions from transport infrastructure projects to zero by 2050. However,current life cycle assessment (LCA)-based approaches for estimating GHGemissions are static and location-independent, and thus do not account for thedynamics of construction. Some project-based methods have been proposed,but there is little guidance and insight available to facilitate theirimplementation in real projects during project planning.This thesis aims to explore how CO2 emissions can be reduced during differentstages of the planning process for transport infrastructure. The analysis focuseson emissions during project execution, i.e. on- and off-site constructionactivities including material production, and transportation. An exploratoryresearch approach is used to develop practical CO2 reduction methods thatcould be implemented during the feasibility studies, the design stage, and theprocurement stage of the planning process. These methods and models aredeveloped and demonstrated in case studies. This is a similar to the prototypingmethod in which early drafts of a new system are developed and tested toenable further development into a finalized system. The findings show thatconsiderable CO2 reductions can be achieved if project alternatives areevaluated systematically during the planning process. Although most majordecisions are made during the early stages of the planning process, later stagesshould not be ignored because these offer opportunities to include moredefinitive project data and thereby improve the certainty of the assessments.Future research in this area should look at the entire planning process up to thestart of construction.

Place, publisher, year, edition, pages
Luleå: Luleå University of Technology, 2017. p. 82
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
National Category
Construction Management
Research subject
Construction Engineering and Management
Identifiers
urn:nbn:se:ltu:diva-62225 (URN)978-91-7583-829-8 (ISBN)978-91-7583-830-4 (ISBN)
Presentation
2017-03-29, F1031, Luleå, 13:00
Opponent
Supervisors
Available from: 2017-03-02 Created: 2017-03-01 Last updated: 2017-11-24Bibliographically approved

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