Sökning: "Silica Fume"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden Silica Fume.

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

    Master-uppsats, KTH/Betongbyggnad

    Författare :Daniel Hofgård; John Sundkvist; [2020]
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  3. 2. Expansion of Sickla treatment plant : A study about the replacement of standard concrete to green concrete

    Master-uppsats, KTH/Betongbyggnad

    Författare :Sava Tnar Rasool; Omar Sharif; [2020]
    Nyckelord :Cement classes; EPD; Exposure class; Fly ash; Green concrete; Ground granulated blast-furnace slag GGBS ; LCA; Portland cement; Silica fume; w c ratio; Cementklasser; Exponeringsklass; Flygaska; Grön betong; LCA; Mald granulerad masugnsslagg GGBS ; EPD; Portlandcement; Silikastoft; vct;

    Sammanfattning : Stockholm Vatten has decided to close down the Bromma waste water treatment plantand manage the waste water from Bromma together with the waste water from the formerEolshällsverket to Henriksdal’s waste water treatment plant. Henriksdals wastewater treatment plant will be expanded for higher purification requirements and loads,estimated to be finished until 2040. LÄS MER

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

    M1-uppsats,

    Författare :Alexander Barchin; Navid Sedighi; [2019]
    Nyckelord :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.;

    Sammanfattning : 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. LÄS MER

  5. 4. Development of UHPC concrete using mostly locally available raw materials

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Lennart Nilsson; [2018]
    Nyckelord :UHPC; Ultra High-Performance Concrete;

    Sammanfattning : The concrete technology has during the last century changed dramatically where the concept of high strength concrete has gone from 30MPa to well over 100MPa. UHPC has many areas of application and is used more and more frequently in all manner of structures. LÄS MER

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

    Master-uppsats, KTH/Betongbyggnad

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

    Sammanfattning : 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. LÄS MER