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Senast publicerade

AutomatingMaintenanceWorkOrder Pro cessing in Facility Management - Classification, Responsibility Routing, and Data Readiness in Maintenance Workflows
(2026) Brown, Megan
The Facility Management (FM) industry generates vast amounts of unstructured text data in the form of Maintenance Work Orders (MWOs). However, this data is frequently underutilised, often treated as an administrative burden rather than an analytical resource. Compared to hardware-dependent IoT (Internet-of-Things) and BMS (Building Management System) data, MWOs do not rely on modern building infrastructure and they can therefore provide valuable insights into building oper ations across diverse real-estate portfolios containing buildings of varying technical maturity. The Goal of this thesis is to investigate how MWOs can be leveraged to automate ad ministrative workflows and improve data quality within FM. Using a Design Science Research (DSR) approach in collaboration with Akademiska Hus, an exploratory data analysis established that traditional classification methods struggle with his torical noise, overlapping categories, and the under-specified nature of occupant text inputs. To address these bottlenecks, two artefacts, The Structurer and The De marcation Agent, were developed and evaluated. The results indicate that while full autonomy is restricted by non-deterministic model behavior and incomplete technical details in user texts, a Human-on-the Loop (HOTL) configuration provides a viable operational framework. Shifting the technician’s role from manual triage to validation lessens administrative burden without the risk of automated routing errors. Furthermore, the pipelines introduce a standardised classification logic that reduces the subjectivity and variance inher ent in manual logging, thereby improving data consistency for future maintenance analytics.
Climate Impact Assessment of Temporary Works in Urban Infrastructure - A Case Study of the West Link Project, Gothenburg
(2026) Bähr, Olof
Temporary works are essential for the construction of permanent infrastructure but are often excluded from climate assessments and procurement requirements. In complex urban infrastructure projects, such as underground rail construction, these temporary constructions may involve substantial quantities of materials, transport activities and machinery use, resulting in potentially significant greenhouse gas emissions. This thesis investigates the climate impact of temporary works in the Västlänken railway tunnel project in Gothenburg and evaluates how well Trafikverket’s climate calculation tool, Klimatkalkyl, represents these impacts. Four temporary constructions were selected for analysis: a diaphragm wall system, a crane foundation, a canal infill and an aqueduct. A life cycle assessment (LCA) was conducted using a three-scenario approach. Scenario A represents a standard Klimatkalkyl calculation based on generic default values. Scenario B adds construction activities that are structurally absent from standard calculations while maintaining the same emission factors. Scenario C applies project-specific Environmental Product Declarations (EPDs), transport distances and fuel data. The results show that the significance of omitted construction activities varies substantially between construction types. For the diaphragm wall system, the addition of previously excluded machinery activities increased total emissions by only 0.1%, whereas the aqueduct showed an increase of 137%. Applying project-specific data reduced calculated emissions by up to 45%, primarily due to lower-emission concrete mixes and the use of HVO100 in construction machinery. The findings indicate that current infrastructure climate calculations may underestimate the climate impact of machine intensive temporary works and that a gap exists between reported and actual construction phase emissions. While Klimatkalkyl can technically accommodate these activities, the current procurement framework does not systematically require their inclusion. The study concludes that this gap is structural rather than a question of data quality or compliance, and that temporary works require greater attention in climate reporting and procurement if long term climate-neutral infrastructure ambitions are to be supported.
Beyond Carbon: Integrating Biodiversity Impact Assessment in Building Design Practice - A tool to evaluate off-site biodiversity impacts of the built environment
(2026) Lampa, Albina
The increasing focus on decarbonisation in the building sector has intensified the use of bio-based construction materials. However, climate-driven strategies do not fully capture broader environmental consequences, particularly regarding biodiversity loss. This thesis investigates the relationship between biodiversity impacts and global warming potential, examining how design decisions and material sourcing influence the environmental performance of buildings. A comparative case study approach is applied, assessing conventional concrete structures alongside several timber-based alternatives. The results show that reductions in carbon emissions may simultaneously increase off-site biodiversity impacts, revealing potential burden-shifting between environmental categories. At the same time, considerable variation is identified within timber-based systems, demonstrating that bio-based construction is not inherently associated with high biodiversity impacts. Cross-laminated timber (CLT) generally has higher impacts, while timber frame systems perform favourably across both carbon and biodiversity indicators. The analysis further highlights geographical sourcing as a critical factor, with Nordic and Central European timber showing substantially lower impacts than global average datasets, highlighting the importance of more detailed material considerations and structural design decisions. To explore how the biodiversity assessment can support practice, a computational tool is developed to integrate biodiversity footprint (BF) evaluations into architectural workflows. Building on life cycle assessment methods, the framework enables simplified comparison of design alternatives and identification of environmental hotspots at both building and component level, addressing the need for more accessible tools in the design process. Although constrained by methodological uncertainty and limited data availability, the study demonstrates how biodiversity considerations can support iterative evaluations and contribute to broader environmental decision-making in the building sector. Overall, the thesis shows that biodiversity impacts cannot be understood through carbon metrics alone. The study highlights the importance of integrating biodiversity as a complementary dimension in order to support more holistic sustainability strategies within the built environment.
Use of Supplementary Cementitous Material in Concrete Effect on Fresh Concrete Properties
(2026) Gautam, Sunil
Minimizing the use of clinker content by using supplementary cementitious materi als (SCMs) requires consideration of their influence on the fresh state properties as well as long-term strength and durability. This study investigated six different SCMs, both natural and industrial, i.e. ground granulated blast furnace slag (GGBS), fly ash (FA), calcined (Nova) clay, volcanic pozzolan from Iceland (VPI), pumice (Yalite) from Grekland and Boliden material (SCMentum) and compared their performance with CEM I 52.5R cement. Mortars containing 40% of SCM were analyzed in terms of water demand, workability, workability loss over 2 hours, bleeding, segregation, setting time, and hydration behavior. One-day strength was additionally determined replacing 20%, 40% and 60% of the cement. The standard test method was used such as mor tar flow test using Hagermann cone for workability, Ultrasonic testing for setting time, calorimetry test for hydration behavior, compressive strength test according to EN-196 1. The results illustrated that the type of SCMs considerably influences the balance be tween flowabiliy and stability. Fly Ash demonstrated the highest flow and bleeding, while Nova Clay resulted in the lowest flow, but experienced the greatest workability loss, around 53% in two hours. VPI showed the most balanced overall performance in cluding the highest one day strength. The initial setting time ranged from three to four hours, where Fly Ash and VPI started setting in 3 hours, and GGBS and Pumice started in 4 hours. All six SCMs exhibited lower early strength than the reference cement and strength decreased more with increasing SCM. In general, the results demonstrated that it is necessary to consider the fresh state properties and early strength when evaluating the suitability of SCM.
Digitalisering inom svenska hamnanlöp: En kvalitativ fallstudie om implementeringen av digitala lösningar från ett aktörsperspektiv
(2026) Jansson, Elias; Chelly, Adam
Digitalisering är ett aktuellt utvecklingsområde inom sjöfarten och förväntas bidra till bättre planering, effektivare informationsdelning och ökad samordning i samband med hamnanlöp. Tidigare forskning beskriver hamnanlöp som en komplex process som omfattar flera aktörer, sekventiella moment och ett behov av samordning och informationsdelning för att de operativa delarna ska kunna genomföras. Samtidigt har implementeringen av digitalisering inom hamnverksamhet påverkats av flera faktorer, däribland bristande standardiserade lösningar, varierande aktörsbehov och implementeringsutmaningar på både organisatorisk och interorganisatorisk nivå. Syftet med denna studie är därför att undersöka hur digitala lösningar har implementerats och används i samband med svenska hamnanlöp, med särskilt fokus på vilka nyttor, hinder och begränsningar som svenska hamnaktörer upplever. Studien har genomförts som en kvalitativ fallstudie. Datainsamlingen består av en webbaserad enkätundersökning och semistrukturerade intervjuer med svenska hamnaktörer. Det empiriska materialet har därefter analyserats med tematisk analys. Resultatet visar att digitala lösningar har implementerats och används i samband med svenska hamnanlöp, men att användningen framstår som ojämn mellan olika aktörer. Digitala lösningar används främst för myndighetsrapportering, dokumentation och planering. Samtidigt är användningen mer begränsad i hamnanlöpens operativa arbete, där telefon, e-post och VHF-radio fortfarande kvarstår som etablerade kommunikationsformer bland svenska hamnaktörer. De främsta hindren som har påverkat implementeringen av digitala lösningar är osäker informationskvalitet, bristande samordning mellan system, etablerade arbetsrutiner och begränsat deltagande från hamnaktörer. De tydligaste nyttoeffekterna återfinns inom administration och informationshantering. Studien avgränsas till ett mindre antal svenska hamnaktörer