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The influence of supplementary cementitious materials on climate impact of concrete bridges exposed to chlorides
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology.
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(English)Manuscript (preprint) (Other academic)
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-215035OAI: oai:DiVA.org:kth-215035DiVA, id: diva2:1145656
Note

QC 20171002

Available from: 2017-09-29 Created: 2017-09-29 Last updated: 2017-10-02Bibliographically approved
In thesis
1. Environmental Impact of Concrete Structures - with Focus on Durability and Resource Efficiency
Open this publication in new window or tab >>Environmental Impact of Concrete Structures - with Focus on Durability and Resource Efficiency
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
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:nbn:se:kth:diva-215037 (URN)978-91-7729-534-1 (ISBN)
Presentation
2017-10-24, Stora konferensrummet, Brinellvägen 23, Stockholm, 13:00 (Swedish)
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Supervisors
Note

QC 20171002

Available from: 2017-10-02 Created: 2017-09-29 Last updated: 2017-10-03Bibliographically approved

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Al-Ayish, NadiaGudmundsson, Kjartan

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