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Cirkulär masshantering: En fallstudie om optimerad resurseffektivitet inom projekt Ostlänken
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering.
2018 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Circular mass management : A case study on optimized resource efficiency in the East Link Project (English)
Abstract [sv]

Rapportens syfte har varit att uppmärksamma återanvändningspotentialen hos jordmassor och hur resurseffektivitet kan optimeras i projekt Ostlänken samt stora infrastrukturprojekt i allmänhet. Det praktiska syftet med studien är att bidra till en mer hållbar masshantering i projekt Ostlänken. Denna rapport har skrivits i form av en fallstudie med två typfall där triangulering har implementerats i forsknings-metodiken för att kombinera kvalitativa med kvantitativa metoder. Kriterier för rapportens analys-metod är baserad på en samlad effektivitetsbedömning där analyserade kriterier är ekonomi, klimat och risk. Resultatet indikerar att jordmassor som transporteras med semitrailer utanför ett projektområde till en fiktiv deponi-plats är både mer kostsamt och emitterar mer CO2-ekv. jämfört med jordmassor som transporteras med dumper innanför ett projektområde för återanvändningsändamål. Analysen visar att en ökad maxlast i kombination med en kortare sträcka är det mest kostnadseffektiva alternativet. Studien belyser även vikten av att inkludera hela värdekedjan (beställare-konsult-entreprenad) och uppdatera branschens annars konservativa förhållningssätt gällande masshanteringsarbetet. 

Abstract [en]

The purpose of the report is to pay attention to the reuse potential of soil masses in infrastructure projects, specifically the East Link Project and how resource efficiency can be optimized. The practical purpose of the study is to contribute to a more sustainable mass management in the East Link Project. This report has been written in the form of a case study with two types of cases where triangulation has been implemented in the research methodology to combine qualitative with quantitative methods. Criterions for the analytical method of the report are based on an overall efficiency assessment, where analyzed criterions are economy, climate and risk. The result indicates that excavated soil masses that are transported by semi-trailers outside the project area to a fictional landfill are costlier and emit more CO2 equivalents than soil masses that are transported by a dumper truck inside the project area for reuse purposes. The analysis indicates that an increased maximum load in combination with a shorter distance is the most cost-efficient option. The study also highlights the importance of including the entire value chain (client-consultant-contractor) as well as updating the industry's otherwise conservative approach to mass management.

Place, publisher, year, edition, pages
2018. , p. 90
Series
TRITA-ABE-MBT ; 18491
Keywords [en]
The East Link Project, railway, circular mass management, resource efficiency, soil masses, semi-trailer, sustainable infrastructure
Keywords [sv]
Ostlänken, järnväg, cirkulär masshantering, resurseffektivisering, jordmassor, semitrailer, hållbar infrastruktur
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-239317OAI: oai:DiVA.org:kth-239317DiVA, id: diva2:1264638
External cooperation
ÅF
Subject / course
Built Environment
Educational program
Degree of Master - Environmental Engineering and Sustainable Infrastructure
Supervisors
Examiners
Available from: 2018-12-03 Created: 2018-11-20 Last updated: 2018-12-03Bibliographically approved

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