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Impact of different concrete types on the LCA of NCC Composite bridge
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [sv]

Traditionell betong används i majoriteten av broar som byggmaterial. Om byggnadsmaterialet skulle kunna ersättas av en betong med mindre miljöpåverkan, kan stora delar av miljöpåverkan minskas. I denna avhandling, ska NCC:s samverkansbro utredas, där tre olika betongtyper ska testas i dess olika konstruktionsdelar. Samverkansbron kommer att jämföras i tre olika scenarier av byggmaterial: traditionell betong, traditionell betong innehållande 5 % slagg och injekteringsbetong.

Jämförelsen kommer att utföras genom en livscykelanalys (LCA) med hjälp av programvaran GaBi 6.5. Resultatet av modelleringen i GaBi presenteras på samma sätt som i en miljövarudeklaration (EPD). I presentationen av resultatet kommer diagram och tabeller visualisera de resultat som erhållits i livscykelanalysen. Det erhållna resultatet visar att vid jämförelse av de tre scenarierna ger injekteringsbetong en mindre klimatpåverkan i majoritet av resultaten. 

Abstract [en]

Traditional concrete is used in the majority of bridges as a building material. If the building material could be replaced by a concrete with less environmental impact, large parts of the environmental impact could be reduced. In this dissertation, NCC Composite Bridge is to be investigated, where three different concrete types are to be tested in its various design elements. The composite bridge will be compared in three scenarios: traditional concrete, traditional concrete with slag as part of binder and prepact concrete.

The comparison will be carried out by a Life Cycle Assessment (LCA) using the software GaBi. The outcome will be in form of an Environmental Product Declaration (EPD) table. (NCC has implemented the EPD system into the company with the ambition to easier and more thorough provide a legit evaluation of the environmental impact.) In the presentation of the result, diagrams and tables visualizes the results obtained in the EPD. The result obtained has shown that comparing the three scenarios; prepact concrete provides a less environmental impact and if replacing traditional concrete with prepact, savings of the environment can be made. 

Place, publisher, year, edition, pages
2015. , 211 p.
TRITA-BKN-Examensarbete, ISSN 1103-4297 ; 468
Keyword [en]
Composite bridge, Prepact concrete, LCA, EPD
Keyword [sv]
Samverkansbro, Injekteringsbetong, LCA, EPD
National Category
Environmental Analysis and Construction Information Technology
URN: urn:nbn:se:kth:diva-177861ISRN: KTH/BKN/EX-468-SEOAI: diva2:874593
Subject / course
Structural Design and Bridges
Educational program
Degree of Master - Civil and Architectural Engineering
2015-11-19, KTH Campus, Brinellvägen 23, Stockholm, 13:30 (English)
Available from: 2015-11-27 Created: 2015-11-27 Last updated: 2015-11-27Bibliographically approved

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