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Environmental Impact of Concrete Structures - with Focus on Durability and Resource Efficiency
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Byggnadsteknik.
2017 (Engelska)Licentiatavhandling, sammanläggning (Övrigt vetenskapligt)
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.

Ort, förlag, år, upplaga, sidor
Kungliga Tekniska högskolan, 2017. , s. 41
Serie
TRITA-BYTE ; 2017:01TRITA-BYTETRITA-BYTE
Serie
TRITA-BYTE ; 1
Nyckelord [en]
Life cycle assessment, environmental impact, concrete structures, resource efficiency, durability, supplementary cementitious materials
Nationell ämneskategori
Annan samhällsbyggnadsteknik
Forskningsämne
Byggvetenskap
Identifikatorer
URN: urn:nbn:se:kth:diva-215037ISBN: 978-91-7729-534-1 (tryckt)OAI: oai:DiVA.org:kth-215037DiVA, id: diva2:1145707
Presentation
2017-10-24, Stora konferensrummet, Brinellvägen 23, Stockholm, 13:00 (Svenska)
Opponent
Handledare
Anmärkning

QC 20171002

Tillgänglig från: 2017-10-02 Skapad: 2017-09-29 Senast uppdaterad: 2017-10-03Bibliografiskt granskad
Delarbeten
1. A comparative study of the environmental impact of Swedish residential buildings with vacuum insulation panels
Öppna denna publikation i ny flik eller fönster >>A comparative study of the environmental impact of Swedish residential buildings with vacuum insulation panels
2015 (Engelska)Ingår i: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 109, s. 183-194Artikel i tidskrift (Refereegranskat) 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.

Ort, förlag, år, upplaga, sidor
Elsevier, 2015
Nyckelord
Vacuum insulation panels (VIPs), LCA, Environmental product declaration (EPD), Environmental impacts, GWP, GHG, Primary energy use, Operational energy
Nationell ämneskategori
Annan naturresursteknik
Identifikatorer
urn:nbn:se:kth:diva-176901 (URN)10.1016/j.enbuild.2015.10.031 (DOI)000367115300017 ()2-s2.0-84945126787 (Scopus ID)
Anmärkning

QC 20151112. QC 20160121

Tillgänglig från: 2015-11-12 Skapad: 2015-11-12 Senast uppdaterad: 2017-12-01Bibliografiskt granskad
2. Life cycle assessment of facade solutions made of durable reactive powder concrete
Öppna denna publikation i ny flik eller fönster >>Life cycle assessment of facade solutions made of durable reactive powder concrete
2017 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Nationell ämneskategori
Annan samhällsbyggnadsteknik
Identifikatorer
urn:nbn:se:kth:diva-215029 (URN)
Konferens
XIV DBMC - 14th international conference on durability of building materials and components
Anmärkning

QC 20171002

Tillgänglig från: 2017-09-29 Skapad: 2017-09-29 Senast uppdaterad: 2017-10-02Bibliografiskt granskad
3. Climate impact optimization in concrete bridge construction
Öppna denna publikation i ny flik eller fönster >>Climate impact optimization in concrete bridge construction
2017 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Nationell ämneskategori
Annan samhällsbyggnadsteknik
Identifikatorer
urn:nbn:se:kth:diva-215032 (URN)
Konferens
39th IABSE Symposium
Anmärkning

QC 20171002

Tillgänglig från: 2017-09-29 Skapad: 2017-09-29 Senast uppdaterad: 2017-10-02Bibliografiskt granskad
4. The influence of supplementary cementitious materials on climate impact of concrete bridges exposed to chlorides
Öppna denna publikation i ny flik eller fönster >>The influence of supplementary cementitious materials on climate impact of concrete bridges exposed to chlorides
Visa övriga...
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Nationell ämneskategori
Annan samhällsbyggnadsteknik
Identifikatorer
urn:nbn:se:kth:diva-215035 (URN)
Anmärkning

QC 20171002

Tillgänglig från: 2017-09-29 Skapad: 2017-09-29 Senast uppdaterad: 2017-10-02Bibliografiskt granskad

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