Sökning: "Håkan Stille"

Visar resultat 6 - 10 av 16 avhandlingar innehållade orden Håkan Stille.

  1. 6. Separations- och filtreringsstabilitet hos cementbaserat injekteringsbruk

    Författare :Almir Draganovic; Håkan Stille; Thomas Jansson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Building engineering; Byggnadsteknik;

    Sammanfattning : Bleeding of cement based grout Bleeding of cement based grout is a complex problem. How it occurs and which basic mechanism causes and influences bleeding have been questions for discussion. Therefore the aim of the thesis is to illustrate what really happens with grout during bleeding and which factors influence it. LÄS MER

  3. 7. Penetrability due to filtration tendency of cement based grouts

    Författare :Daniel Eklund; Håkan Stille; Gunnar Gustafson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Construction engineering; grout; grouting; penetrability; filtration tendency; Byggnadsteknik; Building engineering; Byggnadsteknik;

    Sammanfattning : Grouting as a method of strengthening and sealing rock, soil and concrete is widely used. The possibilities of sealing structures are of great importance from both an economical and environmental point of view. The cost of grouting has in certain projects been as high as the cost for the blasting and excavation of the tunnel. LÄS MER

  4. 8. Behaviour of Rock Fractures under Grout Pressure Loadings : Basic Mechanisms and Special Cases

    Författare :Rikard Gothäll; Håkan Stille; Derek Martin; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fracture mechanics; grouting; jacking; Building engineering; Byggnadsteknik;

    Sammanfattning : .... LÄS MER

  5. 9. Rock mass response during high pressure grouting

    Författare :Rikard Gothäll; Håkan Stille; Johan Andersson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Building engineering; Byggnadsteknik;

    Sammanfattning : The sealing of hard jointed rock by grouting involves several complicated mechanical systems. The result is a complex coupled system of hydro- logical and mechanical precesses. In order to determine the higher order effects of the resulting system the fracture deformations must be assessed. LÄS MER

  7. 10. Shear Strength of Unfilled and Rough Rock Joints in Sliding Stability Analyses of Concrete Dams

    Författare :Fredrik Johansson; Håkan Stille; Kaare Hoeg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geoengineering and mining engineering; Geoteknik och gruvteknik;

    Sammanfattning : The horizontal water load combined with uplift forces implies that concrete damsare sensitive for sliding. At the same time, the safety of concrete dams againstsliding in the rock foundation is associated with large uncertainties. One of themain uncertainties regards the shear strength of rock joints. LÄS MER