Essays about: "fly ash"

Showing result 1 - 5 of 25 essays containing the words fly ash.

  1. 1. 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

  2. 2. Material identification using X-ray diffraction

    University essay from Mittuniversitetet/Institutionen för elektronikkonstruktion

    Author : Linda Genetu Teggen; [2019]
    Keywords : XRD; XRF; incineration; wastemanagement; toxic elements; pollution detection; fly ash; ash; Bruker D2Phaser; DIFFRAC.EVA; chemical filter; scan file.;

    Abstract : This study reviews the theoretical and experimental aspects of the X-ray diffraction (XRD) technique and evaluates its use in identifying toxic elements or compounds in waste that has been incinerated. Many industries incinerate materials that contain large significant amounts of toxic elements, and these elements should be identified and re-moved to reduce environmental pollution. READ MORE

  3. 3. Alternative methods to prevent thermal cracking in concrete

    University essay from

    Author : Alexander Barchin; Navid Sedighi; [2019]
    Keywords : Massive concrete structures; heat development; cement hydration; temperature reduction; cracking; fly ash; ice; coarse aggregates; cooling methods; practical tests.; Massiva betongkonstruktioner; värmeutveckling; cementhydrataion; temperaturreducering; sprickbildning; flygaska; is; grov ballast; kylningsmetoder praktiska försök.;

    Abstract : In the construction industry, concrete is the most common material, because of its good properties such as compressive strength and endurance. Concrete is a composition of several different materials where one of the main components is cement. When the hydration process starts, large amount of heat is generated. READ MORE

  4. 4. Fatty acid composition of black soldier fly larvae : impact of the rearing substrate

    University essay from SLU/Dept. of Energy and Technology

    Author : Nils Ewald; [2018]
    Keywords : Black soldier fly; Hermetia illucens; fatty acids; omega-3 fatty acids; malondialdehyde; blue mussels; waste management;

    Abstract : With an increasing world population and meat consumption the black soldier fly (BSF; Hermetia illucens) shows potential as feed for animals, while recycling nutrients from food waste. To produce larvae of high quality as animal feed, further understanding is needed of how the substrate affects the nutritional composition of the larvae. READ MORE

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

    University essay from KTH/Betongbyggnad; 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