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  • 1.
    Johansson, Fredrik
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Spross, Johan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Damasceno, Davi
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Johansson, Jan
    Naturgasteknik AB.
    Stille, Håkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Investigation of research needs regarding the storage of hydrogen gas in lined rock caverns: Prestudy for Work Package 2.3 in HYBRIT Research Program 12018Report (Other academic)
    Abstract [en]

    The objective of HYBRIT RP1 is to explore and assess pathways to fossil-free energy-mining-iron-steel value chains and thereby provide a basis for industrial development activities and the necessary future transformative change in this field. A large-scale storage capacity for hydrogen gas is an important component of the proposed HYBRIT concept. Underground storage in lined rock caverns provides a reasonable option: a large-scale demonstration plant for storage of natural gas was constructed in Sweden in 2002 and has operated safely since then. Considering that this lined rock cavern facility was constructed for natural gas, the present report investigates the current research needs to allow for underground storage of hydrogen gas in such a facility. This will serve as a basis for the research in Work Package 2.3 of HYBRIT RP1.

    Studying the experiences from decades of Swedish and international research and practice on the construction of underground gas storage facilities, the conclusion is that the lined rock cavern concept seems a reasonable way forward. In terms of rock engineering research, there are currently no critical research issues; however, a development of a previously proposed risk-based design framework for lined rock caverns may further strengthen the ability to manage risks related to underground gas storage facilities. The report identifies several potential research questions on this topic to be further studied: development of a risk-based design approach using subset simulation, the optimization potential of the concrete thickness in the lining, and the effect of spatial variation of rock mass properties on a location’s suitability for the storage facility.

    Additionally, the report identifies the potential effect of hydrogen embrittlement on the steel lining as a critical research issue to ensure safe storage of hydrogen gas in lined rock caverns. However, as this issue is not related to rock engineering, but a material issue, it will not be covered further in Work Package 2.3.

  • 2.
    Westberg Wilde, Marie
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics. ÅF.
    Johansson, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Rios Bayona, Francisco
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Altarejos Garcia, Luis
    Theme D - Syntheis: Risk analysis – assessment of reliability for concrete dams: 14th International Benchmark Workshop on Numerical Analysis of Dams2018Report (Refereed)
    Abstract [en]

    In the last decade the attention and application of a reliability-based methodology for concrete dams has increased. A recent project aiming at bringing forth a reliability-based methodology for design and assessment of concrete dams founded on rock for conditions applicable in a Nordic climate has resulted in a “Probabilistic model code for concrete dams” (PMCD). The objective of Theme D was to estimate probability of failure of an existing concrete dam for sliding along the concrete/rock interface and sliding along a joint in the rock mass, using the PMCD. The dam analyzed is a 25 m high concrete gravity dam located in the north part of Sweden. Contributions from six authors were received and have been analysed in this summary along with a reference solution by the authors. The first assignment was to estimate the deterministic factor of safety. Although the definitions of the factor of safety were similar there was large differences in the results. For the probabilistic analysis, definition of limit state functions was straight forward and have been defined similarly. Variables in the probabilistic analysis were defined somewhat differently, e.g. for concrete density, friction angle and ice loads. The results of the probabilistic analysis of sliding along the interface for normal water levels were varying, although five of the results were within the range of β = 3.7-5. There was less variability for the flood load case and for sliding along the rock joint. There reason was considered to be mainly due to the different parameter definitions. Identification of the most important parameters was successful; although the exact sensitivity values varied (due to variation in parameters), the most important factors were identified. In the calculation of system reliability, the previously described differences were reflected. Bayesian updating proved to be a tricky task, where especially results of the updated standard deviation varied. One conclusion is, however, that the updating of the friction angle is rewarding in terms of increasing the safety index due to the reduction in epistemic uncertainties.

    For a probabilistic methodology to be trustworthy it should produce stable and reproducible results. The conclusion is that the PMCD is successful as a guideline in this process, but that further development and more experience of practical use is necessary. More benchmarks of similar characteristics are thus believed to be a good way forward and a broader discussion among practitioners would also be beneficial in reaching a “consensus” on how to perform reliability-based assessments.

  • 3.
    Larsson, Stefan
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Nilsson, Gunnar
    NCC.
    Jelisic, Nenad
    Trafikverket.
    Utveckling av Jb-Totalsondering för kontroll av kc-pelare2018Report (Other academic)
  • 4.
    Johansson, Fredrik
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Krounis, Alexandra
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Westberg Wilde, Marie
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Igensättning av dränage under betongdammar – Orsaker, övervakning och åtgärder: Energiforskrapport 2017:3692017Report (Other academic)
  • 5.
    Malm, Richard
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
    Fransson, Lennart
    Nordström, Erik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
    Westberg Wilde, Marie
    Johansson, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Hellgren, Rikard
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
    Lastförutsättningar avseende istryck2017Report (Other academic)
  • 6.
    Malm, Richard
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
    Johansson, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Hellgren, Rikard
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
    Ríos Bayona, Francisco
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Load Capacity of Grouted Rock Bolts Due to Degradation: 2017:3742017Report (Other academic)
    Abstract [en]

    In this report, the influence of degradation on the strength of rock bolts has been studied. A literature study has been performed in order to determine the degradation rate and to present observations and conclusions from available assessments of rock bolts. All cases found in the literature have shown that the rock bolts on concrete dams are in good condition with only minor superficial corrosion even after 50 years of service. In the project, a methodology to account for the degradation mechanism in evaluations of dam safety is presented, where all possible failure modes of rock bolts are considered. The contribution of the rock bolts to the dam stability is based on the failure mode with the lowest strength. The degradation has been taken into account based on a German DIN standard based on the chemical content of the water. Most available field tests have only measured the load capacity of bolts, where the deformation is typically not recorded. The relationship between forces and deformations is however important input to verify numerical and analytical analyses. Therefore, field tests have been performed on rock bolts that been in service for 50 years. A previously developed test rig had been modified in this project to register both load and deflection of the pull-out test. The test rig consists of a hydraulic jack that presses a cylinder towards the rock surrounding the bolt. Due to this configuration of the test equipment, a rock cone failure cannot be captured. The results showed that the test rig may influence the obtained load capacity if the failure occurs in the grout. A case study is presented where analytical, probabilistic and finite element analyses were performed to assess the dam safety. Based on the numerical analyses, it was possible to study the development of forces in the rock bolts due to successively increasing loads. The numerical analyses showed (as expected) that the rock bolts are subjected to both shear and tensile forces at the same time. In addition, the shear force was constantly higher than the tensile forces and that the shear forces were about 10% of the total shear resistance for normal loads. This implies that it is important to use a failure criterion for the rock bolts that considers combinations of tensile and shear forces. Besides this, the probabilistic analyses showed that pure overturning failure is extremely unlikely and cannot be considered as a relevant failure mode. The numerical analyses showed that the deformation start as for overturning failure resulting in that parts of the contact surface (on the upstream side) lose its contact. Thereby, the shear forces have to be transmitted over a reduced area which initiates the sliding failure. This implies that it is more suitable to define a criterion that limits the tensile forces in the upstream toe from serviceability loads, rather than having an overturning failure criterion.

  • 7.
    Ivars, Diego Mas
    et al.
    SKB.
    Johansson, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Ghazal, Rima
    Itasca Consultants SAS.
    Sánchez Juncal, Abel
    Itasca Consultants AB.
    Batres Estrada, Rocío
    AECOM.
    A case study of the Odenplan station in the Stockholm City Link project - Analysis of in situ stresses and observed ground behaviour.2016Report (Refereed)
    Abstract [en]

    The Odenplan Station in the Stockholm City Link project is located directly under theexisting subway station with a minimum rock cover of approximately 7 m. The span of theOdenplan Station is 25 m. When the Odenplan station was excavated, deformations largerthan anticipated in previous calculations were observed. The main reason for this discrepancyis believed to be high horizontal in situ and/or persistent fractures in the area parallel withthe excavation.The excavation of the Odenplan station constitutes a case study with well-documented rockmass characteristics, excavation sequences, support sequences and measured deformations.It therefore provides a unique project to analyse. Based on this case study, the main objectivesof this study was to (1) suggest a general technique for numerical back analyses based onmeasured deformations under geological conditions as those present in the Stockholm area,and (2) analyse the range of possible in situ stresses at Odenplan Station in the City Linkproject.The complex three-dimensional 3DEC model lead to rather long computational times. Ageneral technique for a real back analysis was therefore not possible to obtain in this study,since it would require unrealistically long computational time. Instead, a sensitivity study onthe in situ stresses and different types of continuum and discontinuum approaches wereperformed. The results from the analyses gave valuable insight into which types of modelsthat were able to properly recreate the observed ground behavior at Odenplan. The resultsfrom the study clearly showed that a continuum approach does not capture the true behaviorof the blocky rock mass at Odenplan. It is therefore recommended that discontinuumapproaches are used in the future when structurally controlled block movements could beexpected. However, the exact cause behind the discrepancy between the continuum and thediscontinuum model has not been determined in this report.The performed sensitivity analysis suggests that the in situ stresses are high and in the rangeof those previously measured. Maximum horizontal in situ stresses are probably in the rangeof 5.7-7.2 MPa at a depth of 0-20 m, which agrees well with the results of previous rockstress measurements, which were, on average, 8.1 MPa at a depth of 30 m.The encouraging results from this project indicate that further stress sensitivity analysesshould be performed to have a better estimation of the range of in situ stresses in theStockholm area by fitting displacements obtained from modeling to those measured in situ in different projects. These analyses are important in order to understand our present abilityto perform numerical simulations reflecting true rock mass behavior.

  • 8.
    Johansson, Fredrik
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Bjureland, William
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Spross, Johan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Application of Reliability-based Design Methods to Underground Excavation in Rock2016Report (Other academic)
  • 9.
    Westberg Wilde, Marie
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics. ÅF.
    Johansson, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics. Sweco.
    Probablilistic model code for concrete dams.: Report 2016:2922016Report (Other academic)
    Abstract [en]

    The Probabilistic model code for concrete dams presented in this document is a first attempt to put together in a consistent way rules, regulations and explanations necessary for design and assessment of concrete dams from a probabilistic point of view. It is believed that this document will be helpful to perform probabilistic assessments of concrete dams in a systematic way.

    The Probabilistic Model Code for Concrete dams is divided into three parts: Part I: Basis of design, Part II: Load models and Part III: Resistance models. The document also contains one example of a probabilistic assessment.

    Basis of design is based on JCSS (2001), Eurocode 1990 (2001) and ISO 2394 , with some changes has been in order to be applicable for concrete dams and dam safety. Basis of design contains general principles, information of how a probabilistic verification is performed; limit states and design situations, limit state functions and target reliabilities relevant for concrete dams. It also contains a part on updating of prior estimates. The target reliabilities applied are similar to those described in e.g. SS-EN 1990, but are based on calibration of the existing practice. This is further described in Westberg Wilde & Johansson (2016).

    In Part II Load models general descriptions on loads and load modelling are given, based on JCSS (2001). Next relevant loads for concrete dams are discussed and “best estimates” on statistical descriptions are presented. Part II includes ice loads, hydrostatic pressure, uplift and earth pressure.

    In Part III Resistance models general descriptions on resistance and resistance modelling is given, based on JCSS (2001). Next relevant resistance parameters for concrete dams are discussed and “best estimates” on statistical descriptions are presented. The resistance parameters included are self weight, friction properties of concrete/rock contact and in rock, material properties (concrete, rock, steel), rock bolts and rock anchors.

    Finally an example is given. In the example a probabilistic analysis of a concrete gravity dam is performed, based on the Probabilistic model code.

    The process of bringing forth this document and the calibration procedure is further described in Westberg Wilde & Johansson (2016).

  • 10.
    Nejad Ghafar, Ali
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Draganovic, Almir
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Larsson, Stefan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    AN EXPERIMENTAL STUDY OF THE INFLUENCE OF DYNAMIC PRESSURE ON IMPROVING GROUT PENETRABILITY2015Report (Other academic)
    Abstract [en]

    In order to increase the sealing efficiency in rock grouting, the fractures should be entirely grouted while the filtration of cement particles is an obstacle. By reducing the filtration, penetrability of grout will be increased resulting in a more reliable grouting. Some of the advantages of controlling filtration are decreas in time, costs and the environmental impacts of the projects. Increase in the safety margins of the projects during both the construction and the operation are also among the benefits of regulating the filtration.

    Use of variable pressure for improving grout penetrability has been studied in both the lab and the field over the years. The focus of the previous investigations was mainly on application of high frequency oscillating pressure using artificial parallel plates without constrictions with openning sizes larger than 100 μm. The mechanism of improvement of grout penetrability was interpreted as reduction in viscosity due to the oscillation in all those studies. The missing parts of the resulted knowledge are the influences of different shapes of the variable pressure and the effects of low frequencies i.e. longer cycle periods to penetrate through micro fractures smaller than 100 μm with constrictions. Moreover, other mechanisms of improvement of grout penetrability might also be more efficient than reduction in viscosity due to the oscillation.

    The focus of this study is therefore to investigat the influence of low frequency instantaneous variable pressure with different peak and rest periods on regulating the filtration. A pneumatic pressure control system has been thus employed using parallel plates with constrictions of 43 and 30 μm. The proposed mechanism of action was change of flow pattern due to the change in pressure and the corresponding velocity. Comparison of results of the variable and the constant pressures revealed the great impact of the examined variable pressure on improving grout penetrability.

  • 11.
    Nordström, Erik
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
    Malm, Richard
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
    Johansson, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Ligier, Pierre-Louis
    Lier, Öyvind
    Betongdammars brottförlopp2015Report (Other academic)
  • 12.
    Spross, Johan
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Olsson, Lars
    Geostatistik AB.
    Hintze, Staffan
    NCC.
    Stille, Håkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Hantering av geotekniska risker i byggprojekt: Ett praktiskt tillämpningsexempel2015Report (Other academic)
    Abstract [sv]

    Skador till följd av utfall av negativa geotekniska risker kostar stora summor för svensk byggindustri. Det krävs därför en effektiv och transparent riskhantering som kan minska kostnaderna. I dagsläget används sällan de verktyg som finns tillgängliga för riskhantering fullt ut i byggprojekten.

    Denna rapport visar hur ett sådant verktyg, Svenska Geotekniska Föreningens metodbeskrivning för geoteknisk riskhantering (SGF Rapport 1:2014), kan användas i praktiken. Vi ger ett omfattande illustrativt exempel på hur riskhantering kan utföras i alla skeden av ett typiskt geotekniskt projekt från idéfas till driftskede. Exemplet är fingerat men baserar sig på schakt och grundläggning till utbyggnaden av Hästsportens hus vid Solvalla travbana från 1992.

    Det är vår uppfattning att metodiken i SGF Rapport 1:2014 är tillämpbar på alla skeden i byggprocessen, från idéfas till driftfas, i både stora och små projekt. Det är dock avgörande att riskhanteringen anpassas till varje nytt projekt eller projektskede. Det strukturerade arbetssättet som metodiken ger höjer kvalitén på riskhanteringen jämfört med ett ad hoc-betonat arbetssätt, som man ofta ser i dagens projektstyrning.

    Med tanke på denna höjda kvalitet menar vi att riskkostnaderna kan bli mindre. En absolut grund för detta är dock att man uppfyller de fyra baskraven. Dessa syftar dels till att skapa och upprätthålla en kultur där man är medveten om risker som finns hur de påverkar projektet, dels till att definiera och tydliggöra riskhanteringen inom organisationen så att inget faller mellan stolarna. Därför är det viktigaste kravet att den som bestämmer har en medveten risksyn.

  • 13.
    Draganović, Almir
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Björk, Conny
    Penetrationsförmåga av cementbaserade injekteringsbruk beroende på kornkurva och cementkemi2015Report (Other (popular science, discussion, etc.))
  • 14.
    Johansson, Fredrik
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Spross, Johan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Fransson, Lennart
    Dammsäkerhet - Islast mot dammkonstruktioner: Sammanställning av kunskapsläget samt förslag till forskning och utveckling2013Report (Refereed)
  • 15.
    Johansson, Fredrik
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Westberg Wilde, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Probabilistiska metoder för stabilitetsanalys av betongdammar - förslag till framtida utveckling2012Report (Other academic)
  • 16.
    Johansson, Fredrik
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Edeskär, Tommy
    Luleå Tekniska Universitet.
    Reparationsinjektering av dammar och undergrund: strategi för forskning och utveckling2012Report (Other academic)
    Abstract [sv]

    Svenska dammar blir allt äldre och i huvudsak fokuserar industrin på att bibehålla dammarnas funktion och anpassa dem till förändrade förutsättningar och ökade säkerhetskrav. Det är i allmänhet mer komplicerat att reparera eller uppgradera befintliga anläggningar jämfört med att bygga nya. Bygga nytt är i allmänhet orealistiskt vilket innebär att det är angeläget att det finns tillförlitliga metoder tillgängliga för att reparera och uppgradera befintliga anläggningar.Det finns en rad injekteringsmetoder som kan användas för reparation av dammar och undergrund och som prövats internationellt och i viss utsträckning även tidigare i Sverige. Följande metoder har identifierats: kompaktinjektering, permeationsinjektering, inträngningsinjektering och slitsmur. Av dessa metoder har permeationsinjektering identifierats som mest intressant för rehabilitering av medelstora svenska dammar. Inom detta område finns ett antal intressanta forsknings- och utvecklingsspår som är viktiga för branschen.Permeationsinjektering innebär vanligen en användning av en kombination av injekteringsbruk, oftast två olika, för att åtgärda sprickor av olika storlek. Det finns en rad injekteringsbruk tillgängliga men för flera kan beständigheten ifrågasättas eller bör undvikas av miljöskäl. Det finns dock alternativ som bör undersökas närmare och som inte tidigare använts i Sverige, t.ex. silica sol i lösning som aktiveras med kalcium.Vidare behöver en mer ingenjörsbaserad injekteringsmetodik utvecklas och skräddarsys för användning på dammar. Det gäller framförallt vid vilket tryck injekteringen ska utföras för att uppnå ett tillfredsställande injekteringsresultat utan att äventyra dammkonstruktionens säkerhet. Det krävs även bättre kontrollmetoder för brukets spridning under injektering, där forskning rekommenderas inom konceptet ”real time grouting method”. Injektering i strömmande förhållanden och under vattentryck bör också studeras närmare. Särskilt fokus bör läggas på att säkerställa under vilka förhållanden bruket är erosionsstabilt samt att injekteringsskärmarna uppnår de egenskaper som förväntas.Det finns idag bristande erfarenhetsåterföring i Sverige från genomförda reparationsinjekteringsprojekt. Historiska och kommande projekt bör därför dokumenteras inom SVC.

  • 17.
    Rahman, Md. Mashuqur
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Håkansson, Ulf
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    In-line rheological measurements of cement based grouts using the UVP-PD method2011Report (Other academic)
  • 18.
    Larsson, Stefan
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Charbit, Benjamin
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Malm, Richard
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
    Ansell, Anders
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
    Pilotstudie för utveckling av förenklad beräkningsmetod för jordstabilisering med skivor av kalkcementpelare2011Report (Other academic)
  • 19. Deckner, F.
    et al.
    Gabrielsson, J.
    Andersson, M.
    Lindgren, Mattias
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Norström, L.
    Unverzagt, A.
    Larsson, N.
    Müller, R.
    Bergman, Niclas
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Jordförstärkning2010Report (Other academic)
  • 20.
    Draganović, Almir
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Stille, Håkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Separation och filtrering av cementbaserat injekteringsbruk2010Report (Other academic)
  • 21.
    Draganović, Almir
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Johansson, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Svällande leror i bergtunnlar - Förstudie2010Report (Other academic)
  • 22.
    Stille, Håkan
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Zetterlund, Miriam
    Pérez, Kelvis
    Bagheri, Mehdi
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    The observational method2010Report (Other academic)
  • 23.
    Johansson, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Skjuvhållfasthet för råa och ofyllda bergsprickor2009Report (Other academic)
  • 24. Gustafsson, Anders
    et al.
    Johansson, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Stille, Håkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Betongdammas glidstabilitet: Förslag på nya riktlinjer2008Report (Other academic)
  • 25. Kobayashi, Shinji
    et al.
    Stille, Håkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Gustafson, Gunnar
    Chalmers.
    Stille, Björn
    Real Time Grouting Control Method: Development and application usingÄspö HRL data2008Report (Refereed)
  • 26. Kobayashi, Shinji
    et al.
    Stille, Håkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Design for rock grouting basedon analysis of grout penetration: Verification using Äspö HRL dataand parameter analysis2007Report (Refereed)
  • 27. Holmberg, Mats
    et al.
    Stille, Håkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Observationsmetodens grunder och dess tillämpning på design av konstruktioner i berg2007Report (Other academic)
  • 28.
    Lagerlund, Johan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Reparationsmetoder för dammkropp i relation till inre erosion: Kriterier för val av injekteringsmetod och injekteringsmaterial2007Report (Other academic)
  • 29. Emmelin, Ann
    et al.
    Brantberger, Martin
    Eriksson, Magnus
    Gustafson, Gunnar
    Stille, Håkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Rock grouting: Current competence and developmentfor the final repository2007Report (Refereed)
  • 30.
    Ansell, Anders
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
    Holmgren, Jonas
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
    Mundt, Elisabeth
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering (name changed to Building Service and Energy Systems 2012-03-01).
    Silfwerbrand, Johan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Stille, Håkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Sundquist, Håkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    State-of-the-art och förslag till forskningsprojekt: Drift, underhåll och reparation av trafiktunnlar2007Report (Other academic)
  • 31.
    Johansson, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Stabilitetsanalyser av stora konstruktioner grundlagda på berg: En inledande litteraturstudie2006Report (Other academic)
  • 32.
    Stille, Håkan
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Holmberg, Mats
    Olsson, Lars
    Andersson, Johan
    Dimensionering av samverkanskonstruktioner i berg med sannolikhetsbaserade metoder: En inledande studie2005Report (Other academic)
  • 33.
    Draganović, Almir
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Separationsstabilitet hos injekteringsbruk2005Report (Other academic)
1 - 33 of 33
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