Climate calculation with focus on the environmental aspect in relation to cost for the construction project "Landvetter Backa Västra”.
Publicerad
Författare
Typ
Examensarbete för masterexamen
Master's Thesis
Master's Thesis
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
The greenhouse gases are currently the main cause of the increasing global warming,
particularly due to carbon dioxide emissions. In Sweden, the construction and real estate
sector accounts for 21% of greenhouse gas emissions, and Sweden has set a target to achieve
net zero emissions of greenhouse gases by 2045. Against this background, the central part of
the master's thesis will focus on climate impact, with a case study conducted on an ongoing
road and construction project called 'Landvetter Backa Västra', and the aim of this project is
to study the project's emissions using life cycle assessment (LCA). Veidekke's project
involves constructing the road that leads to the new development area, a task that includes
extensive blasting and challenging topography. In addition to blasting, the studied project
includes tasks such as road construction with asphalt, concrete bridge construction, pipeline
laying, and steel structures. The idea and direction for the thesis was jointly developed with
Veidekke.
A literature review was conducted in the initial stages of the report using keyword searches in
databases such as Google Scholar, Chalmers Library, and websites of government agencies.
Information/data from the Landvetter Backa project was collected from a cost estimate
calculated by Veidekke for the project. Five interviews were conducted, and two climate
impact calculations were performed for the project using two different climate calculation
tools based on data from the cost estimate. Anavitor and the Swedish transport administration
have developed their respective climate calculation tools, which were used and compared in
this report. Veidekke has a collaboration with Anavitor, and therefore, all calculations for
alternative materials and fuels were based on results from Anavitor's carbon climate
calculation tool.
The result for the total carbon dioxide emissions for the Landvetter Backa project was
calculated to be 1926 tons of 𝐶𝑂-eq using Anavitor's tool and 1665 tons of CO2-eq using the
tool from the Swedish transportation administration. Diesel was the studied factor with the
largest impact, accounting for over 50% in both climate calculations, followed by materials
such as steel and concrete. Several materials with reducing 𝐶𝑂-eq were presented in the
results and were weighed together for the Landvetter Backa project, resulting in a 56%
reduction in total CO2-eq but with a 24% increase in cost.
As this report also examines alternative environmentally friendlier solutions, it can be
concluded that HVO100 would have reduced emissions by 47% for this project, but with a
price increase by 26% per liter. Through research, it is also possible to note that both steel and
concrete have more environmentally friendlier alternatives than the "standard product", where
implementation of these alternatives could have reduced total emissions. Rock blasting, which
is also studied in this report, currently does not have a good environmentally friendlier
alternative in terms of reasonable cost and time increases.
Keywords:
Beskrivning
Ämne/nyckelord
Carbon dioxide emissions, climate calculations, GWP, EPD, environment, emissions, Infrastructure industry, greenhouse gas.