Essays about: "krympning"

Showing result 11 - 15 of 22 essays containing the word krympning.

  1. 11. Study of crack width within a suspended concrete slab with different amount of cement clinker considering lower climate impact

    University essay from KTH/Betongbyggnad

    Author : Sedige Feizi; Fateha Yasmin Khan; [2018]
    Keywords : concrete; lower climate impact; carbon dioxide emission; cement clinker; fly ash; laboratory test; slab; crack width; analytical calculation; FEM-design; betong; lägre klimatpåverkan; koldioxidutsläpp; exponering klass; cementklinker; flygaska; laboratorium; platta; sprickvidd; analytisk beräkning; FEM-design;

    Abstract : This master thesis investigates the possibility of using a concrete recipe with only 70 % cement clinker for a building project named Gretas Glänta, regarding the demands of cracking for a suspended slab. The requirement to fulfill was a maximum crack width of 0.2 mm due to drying shrinkage and long- term loading. READ MORE

  3. 12. Finite element analysis of cracking of concrete arch dams due to seasonal temperature variation

    University essay from Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Author : Fredrik Pettersson; Fredrik Hjalmarsson; [2017]
    Keywords : arch dam; hydro power; finite element method; abaqus; temperature variations; concrete; deformation; crack propagation; Technology and Engineering;

    Abstract : Flera dammkonstruktioner i Norden utsätts för stora temperaturvariationer mellan sommar och vinter. I norra Sverige kan dammar vara utsatta för temperaturvariationer på upp emot 60–70 °C. Detta resulterar ofta i sprickbildning i betongen vilket medför utmaningar vid både utformning av nya dammar och underhåll av befintliga. READ MORE

  4. 13. Reinforced Concrete Subjected To Restraint Forces : A comparison with non-linear numerical analyses

    University essay from KTH/Bro- och stålbyggnad

    Author : Niels Brattström; Oliver Hagman; [2017]
    Keywords : Restraint forces; concrete; cracking; restraint degree; crack width; creep; thermal actions; shrinkage; Tvångskrafter; betong; sprickor; inspänningsgrad; sprickvidder; krypning; termisk last; krympning;

    Abstract : In Sweden, it is Eurocode 2 which forms the basis for performing a design of concrete structures, in which methods can be found treating the subject of restrained concrete members and cracking in the serviceability limit state. In the code, both detailed hand calculations procedures as well as simplified methods are described. READ MORE

  5. 14. Evaluation of a concrete plug : From the Dome Plug Experiment DOMPLU at Äspö HRL

    University essay from KTH/Betongbyggnad

    Author : Anders Kristiansson; [2014]
    Keywords : DOMPLU; DOPAS; concrete plug; KBS-3V; measurement; full scale test; SKB; nuclear waste repository; DOMPLU; DOPAS; betongplugg; KBS-3V; mätningar; fullskaleförsök; SKB; kärnavfallsförvaring;

    Abstract : In SKB’s Äspö Hard Rock Laboratory (HRL) a full scale test of a concrete plug,part of a sealing structure for the depository of spent nuclear fuel, has been carriedout. The aim of this thesis is to evaluate the behavior of the concrete plug and howit corresponds to assumptions made during the design. READ MORE

  6. 15. Ekonomiska effekter av ledtid vid virkesaffärer

    University essay from SLU/Department of Forest Biomaterials and Technology (from 131204)

    Author : Herman Tunstig; Lina Magnusson; [2014]
    Keywords : ränta; kontrakt; försäljningsformer; transportledtid;

    Abstract : Virkesaffärer går idag till på olika sätt när skogföretag köper virke från skogsägare. Det finns fyra försäljningsformer, varav avverkningsuppdrag är den vanligaste. Betalningstidpunkten för en virkesaffär kan variera. READ MORE