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Found 4 essays matching the above criteria.

1. 1. Climate enhanced concrete in the civil engineering industry

   University essay from KTH/Betongbyggnad

   Author : Daniel Hofgård; John Sundkvist; [2020]
   Keywords : Alternative binders; carbon dioxide emissions; concrete for bridges; hydropower structures; wind powerplant foundations; GGBS; fly ash; material parameters; silica fume; trass; volcanic ash.; Alternativa bindemedel; vindkraftsfundament; brobetong; GGBS; flygaska; koldioxidutsläpp; mald granulerad masugnsslagg; materialparametrar; silikastoft; trass; vattenbyggnadsbetong; vulkanaska;

   Abstract : In 2017, the Swedish Parliament stated a new climate law with the goal that Sweden should be climate neutral by 2045. The concrete industry has developed a roadmap on how the goal for 2045 can be achieved, where one way to reduce the carbon emissions from concrete is by replacing a part of the cement clinker with alternative binders in the concrete mix. READ MORE

3. 2. Basic Creep of Young Concrete - Sensitivity in the Evaluation Method

   University essay from KTH/Betongbyggnad

   Author : Benar Ekmat; Natalea Hermes; [2019]
   Keywords : thermal cracking; young concrete; creep; Linear Logarithmic Model; temperature development; average strain; sensitivity.; Temperatursprickor; ung betong; krypning; Linjär Logaritmisk Modell; temperaturutveckling; töjning; känslighet.;

   Abstract : Creep is defined as deformation that takes place under constant load after an initial elastic response. This thesis focuses on a material property problem area that concerns stress analysis. Focus is on stress development considering creep deformations occurring when a concrete structure is under load, i.e. READ MORE

4. 3. 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

5. 4. Prediction of early age and time dependent deformations in a massive concrete structure

   University essay from KTH/Betongbyggnad

   Author : Ali Aghili; Haris Ribac; [2018]
   Keywords : Early age concrete; hydration of cement; Storfinnforsen; ConTeSt; crack risk; temperature development; strain; mass concrete structures; measurement plan; Ung betong; hydratation av cement; Storfinnforsens kraftverk; ConTeSt; sprickrisk; temperatur; töjning; massiva konstruktioner; mätningsplanering;

   Abstract : The heat development that occurs due to the hydration of cement is important to consider during casting of massive concrete structures. By using computer programs that are based on finite element methods (FEM), simulations can be performed on the heat- and strength development. READ MORE