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Environmental Impact of Concrete Structures - with Focus on Durability and Resource Efficiency
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology.
2017 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Concrete is essential for the construction industry with characteristic properties that make it irreplaceable in some aspects. However, due to the large volumes consumed and the energy intense cement clinker production it also has a notable climate impact. In order to reach the international and national sustainability goals it is therefore important to reduce the climate impact of concrete structures.

There are many ways to influence the environmental impact of concrete and a detailed analysis is one of the actions that could push the industry and the society towards a sustainable development. The purpose of this research is to evaluate the environmental impact of concrete structures and the built environment and to highlight the possibilities to reduce that impact with choice of concrete mix and innovative design solutions.

A life cycle assessment (LCA) was carried out to analyze the environmental impact of two thin façade solutions with innovative materials and to evaluate influences of different greenhouse gas reducing measures on concrete bridges. The influence of supplementary cementitious materials (SCM) in terms of climate impact and durability was also analyzed.

The results indicate that SCMs have a twofold effect on the climate impact of reinforced concrete structures. Not only do they reduce the greenhouse gases through cement clinker replacement but also by an improvement of durability regarding chloride ingress. Currently, this is not considered in the regulations, which makes it difficult to foresee in LCA at early design stages. The results also show great possibilities to reduce the climate impact through different measures and design alternatives and the need for further development of products and solutions.

Place, publisher, year, edition, pages
Kungliga Tekniska högskolan, 2017. , p. 41
Series
TRITA-BYTE ; 2017:01TRITA-BYTETRITA-BYTE
Series
TRITA-BYTE ; 1
Keyword [en]
Life cycle assessment, environmental impact, concrete structures, resource efficiency, durability, supplementary cementitious materials
National Category
Other Civil Engineering
Research subject
Civil and Architectural Engineering
Identifiers
URN: urn:nbn:se:kth:diva-215037ISBN: 978-91-7729-534-1 (print)OAI: oai:DiVA.org:kth-215037DiVA, id: diva2:1145707
Presentation
2017-10-24, Stora konferensrummet, Brinellvägen 23, Stockholm, 13:00 (Swedish)
Opponent
Supervisors
Note

QC 20171002

Available from: 2017-10-02 Created: 2017-09-29 Last updated: 2017-10-03Bibliographically approved
List of papers
1. A comparative study of the environmental impact of Swedish residential buildings with vacuum insulation panels
Open this publication in new window or tab >>A comparative study of the environmental impact of Swedish residential buildings with vacuum insulation panels
2015 (English)In: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 109, p. 183-194Article in journal (Refereed) Published
Abstract [en]

A large part of the energy consumption in the European Union member states is related to space heating, a significant share of which is due to transmission losses through the building envelope. Vacuum insulation panels (VIPs), with unique thermal insulation properties, do therefore provide an interesting alternative for the building industry. This paper presents the results of a life cycle analysis (LCA) study that compares the environmental impact of three hypothetical buildings, a standard residential building, a regular well-insulated building and a building insulated with VIPs. The environmental impact includes the global warming potential (GWP) and the primary energy (PE) use, from the material production stage to the building operational phase (50 years). The cradle-to-gate environmental impact categories of ozone depletion potential (ODP), acidification potential (AP) and eutrophication potential (EP) of all building components are also assessed. The study shows a comparatively lower operational energy for the VIP insulated building and a relatively lower total greenhouse gas emission as well as the possibility to save significant living space. The results also show that the VIPs have measurable environmental impact during the product stage while the core material of the VIPs has considerable impact on the results.

Place, publisher, year, edition, pages
Elsevier, 2015
Keyword
Vacuum insulation panels (VIPs), LCA, Environmental product declaration (EPD), Environmental impacts, GWP, GHG, Primary energy use, Operational energy
National Category
Other Environmental Engineering
Identifiers
urn:nbn:se:kth:diva-176901 (URN)10.1016/j.enbuild.2015.10.031 (DOI)000367115300017 ()2-s2.0-84945126787 (Scopus ID)
Note

QC 20151112. QC 20160121

Available from: 2015-11-12 Created: 2015-11-12 Last updated: 2017-12-01Bibliographically approved
2. Life cycle assessment of facade solutions made of durable reactive powder concrete
Open this publication in new window or tab >>Life cycle assessment of facade solutions made of durable reactive powder concrete
2017 (English)Conference paper, Published paper (Refereed)
National Category
Other Civil Engineering
Identifiers
urn:nbn:se:kth:diva-215029 (URN)
Conference
XIV DBMC - 14th international conference on durability of building materials and components
Note

QC 20171002

Available from: 2017-09-29 Created: 2017-09-29 Last updated: 2017-10-02Bibliographically approved
3. Climate impact optimization in concrete bridge construction
Open this publication in new window or tab >>Climate impact optimization in concrete bridge construction
2017 (English)Conference paper, Published paper (Refereed)
National Category
Other Civil Engineering
Identifiers
urn:nbn:se:kth:diva-215032 (URN)
Conference
39th IABSE Symposium
Note

QC 20171002

Available from: 2017-09-29 Created: 2017-09-29 Last updated: 2017-10-02Bibliographically approved
4. The influence of supplementary cementitious materials on climate impact of concrete bridges exposed to chlorides
Open this publication in new window or tab >>The influence of supplementary cementitious materials on climate impact of concrete bridges exposed to chlorides
Show others...
(English)Manuscript (preprint) (Other academic)
National Category
Other Civil Engineering
Identifiers
urn:nbn:se:kth:diva-215035 (URN)
Note

QC 20171002

Available from: 2017-09-29 Created: 2017-09-29 Last updated: 2017-10-02Bibliographically approved

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