Subterrestrial chambers of Haga: An exploration into sustainable concrete alternatives and underground construction technics

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Examensarbete för masterexamen
Master's Thesis
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Architecture and urban design (MPARC), MSc
Publicerad
2024
Författare
Aslan, Eylül
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The construction industry has an undeniable share in the global CO2 footprint and according to the UN Environmental Programme the industry is drawing further away from the 2050 decarbonisation pathway while its emissions reached a new peak by exceeding the pre-pandemic numbers of 2019 (UNEP, Nov 9 2022). With concrete being one of the predominant construction materials, it contributes to this share massively. Furthermore not only the production of concrete but also extraction of its components from the planet is accelerating in a warning rate and causing unrepairable environmental damage. Especially Nordic countries have high environmental awareness and there are many examples of sustainable buildings responding to current needs. Nevertheless the large scale underground structures are still built with concrete due to their higher requirements. The study aims to explore the properties of carbon neutral or even carbon negative substitutes in combination with alternative building methods and design approaches. The replaced materials jointly with a supporting design process and construction method aim to minimise the environmental impacts. As location for the thesis Haga station of Västlänken project (eng.: West Link), a part of an ongoing infrastructural project of Gothenburg, is chosen, which is situated in one of the oldest districts of the city surrounded by historical landmarks. In addition to its touristic appeal, according to the urban development project the commuter traffic in the area will increase. The thesis proposes an exhibition area in the first underground level of the station dedicated to showcase these explorations and further researches to raise awareness, while connecting two entrances to the station and forming an alternative path for the commuters. The space is designed with focus on efficiency of material use and inspired by traditional but mostly abandoned building technics.
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sustainable concrete; cement substitutes; recycled aggregates; architectural design
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