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Showing result 1 - 5 of 30 essays matching the above criteria.

  1. 1. The impact of stage casting on shrinkage restraint in concrete walls

    University essay from KTH/Byggteknik och design; KTH/Byggteknik och design

    Author : Cindy Amjadi; Justyna Melek; [2020]
    Keywords : Concrete; concrete wall; stage casting; shrinkage restraint; cracking; FEM-Design; Betong; betongvägg; gjutetappindelning; krymptvång; sprickor; FEM-Design;

    Abstract : The most used widely material in the construction and industrial industry is concrete. Concrete is a material that has been used for a long time and will remain to do so. Therefore, it is especially important to obtain knowledge of the material’s properties and how it is affected by various conditions. READ MORE

  2. 2. Numerical analysis of paperboard delamination using cohesive elements

    University essay from KTH/Hållfasthetslära

    Author : Markus Johansson-Näslund; [2020]
    Keywords : ;

    Abstract : A new test method for measuring the shear strength associated with mode III delamination of paperboard is studied with the purpose of reducing the size of the test configuration. The method, which uses a split cantilever beam (SCB) specimen, measures the shear strength indirectly through the fracture resistance. READ MORE

  3. 3. Cracking in a slender concrete slab due to thermal variation

    University essay from KTH/Betongbyggnad

    Author : Johan Mattsson; Fredrik Åman; [2019]
    Keywords : Concrete slab; Concrete; Finite element analysis; Cracking; Thermal variation; Seasonal temperature; Abaqus; Brigade Plus; Betonggrund; Betong; Finit element analys; Sprickbildning; Termiska laster; Omgivningstemperature; Abaqus; Brigade Plus;

    Abstract : Concrete slabs used in thepulp and paper industries are often situated outdoors, which means that theslabs are exposed to temperature variations due to different weatherconditions. These temperature variations together with operational temperaturesassociated with the manufacturing process, may introduce high temperaturegradients in the concrete. READ MORE

  4. 4. A novel platform to quantify crack formation due to root water uptake

    University essay from SLU/Dept. of Soil and Environment

    Author : Susanne Alexandersson; [2019]
    Keywords : soil structure dynamics; root water uptake; crack formation; automatized imaging system;

    Abstract : Soil structure play an important role for a productive and sustainable agriculture. It controls many processes in the soil and has a great impact on soil functions and related ecosystem services. Plants play an important role in soil structure dynamics. READ MORE

  5. 5. Simulation of Hardening of the MahanaKhon Tower Mat Foundation

    University essay from KTH/Betongbyggnad

    Author : Zakaria Kazi-tani; [2019]
    Keywords : Hydration; MahanaKhon tower; mat foundation; young concrete; temperature development; thermal stresses; cracking; fly ash; finite element analysis; COMSOL Multiphysics; Hydratation; MahanaKhon tower; bottenplatta; ung betong; temperaturutveckling; termiska spänningar; sprickbildning; flygaska; finita elementanalys; COMSOL Multiphysics;

    Abstract : Cement hydration is the result of a series of simultaneous chemical reactions occurring during the production of concrete. An excessive amount of heat is generated, which consequently may give rise to thermal stresses and cause early age cracks in concrete that may affect its structural integrity, and load bearing capacity. READ MORE