Essays about: "thermal cracking"

Showing result 16 - 20 of 31 essays containing the words thermal cracking.

  1. 16. A High Heat Flux Facility Design forTesting of Methane in Rocket NozzleCooling Channels

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Richard Ristic; [2017]
    Keywords : ;

    Abstract : Liquid natural gas, with a high content of methane, is one of the most prominent future solutions for rocket propellants. This is due to its efficiency in terms of specific thrust, in combination with several operational benefits including availability, storage stability and low toxicity. READ MORE

  3. 17. Finite element analysis of temperature in hardening concrete using isothermal calorimetric data

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

    Author : John Mac; [2017]
    Keywords : isoconversion; isothermal calorimetry; thermal analysis; finite element method; numerical simulation; Technology and Engineering;

    Abstract : The produced heat in hardening concrete is of special importance to consider as the temperature rise within a large concrete structure can become such high that the structure may experience thermal cracking. With use of a simulation program that is based on the finite element method, the temperatures within the structure can be estimated to predict possible crack development. READ MORE

  4. 18. Thermal cracking of a concrete arch dam due to seasonal temperature variations

    University essay from KTH/Betongbyggnad

    Author : Jonas Enzell; Markus Tollsten; [2017]
    Keywords : Arch dam; Concrete; Finite element analysis; Cracking; Progressive failure analysis; Valvdamm; Betong; Finit elementanalys; Sprickor; Progressiv brottanalys;

    Abstract : Concrete dams located in northern regions are exposed to large seasonal temperature variations. These seasonal temperature variations have resulted in cracking in thin concrete dams. Continuous monitoring and evaluation of existing dams are important to increase the knowledge about massive concrete structures and to ensure dam safety. READ MORE

  5. 19. Temperature reduction during concrete hydration in massive structures

    University essay from KTH/Betongbyggnad

    Author : Sandra Lagundzija; Marie Thiam; [2017]
    Keywords : Massive concrete structures; hydration heat; temperature reduction; crack risk; mineral additions; concrete cooling; Massiva betongkonstruktioner; värmeutveckling; temperaturreducering; sprickbildning; mineraltillsatser; kylning av betong;

    Abstract : Concrete is one of the most used building materials in the world because of its good properties. However, cement which is one of the main components in concrete, produces a high amount of heat during the hydration process. The generated heat leads to temperature rise inside the structure. READ MORE

  6. 20. 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