Essays about: "reinforcement content"

Showing result 21 - 25 of 31 essays containing the words reinforcement content.

  1. 21. Friction and Wear Performance of Experimentally Developed Self-lubricating PPS/PTFE Composites

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Kimberly Rose Lagrama; [2019]
    Keywords : PPS; PTFE; self-lubricating composites;

    Abstract : Demanding applications, as well as the push to eliminate the need for fossil-fuel based lubricants, create the need for the development of high-performance polymers. Polyphenylene Sulfide (PPS) is an example of a high-performance polymer and has a high service temperature, good dimensional stability, and excellent chemical resistance. READ MORE

  3. 22. Polyvinyl alcohol (PVA) adhesives reinforced by microfibrillated cellulose (MFC) – adhesive properties and reinforcement mechanisms

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Daniela Wloch; [2019]
    Keywords : PVA adhesive; boric acid; MFC; cross-linkers; aluminum sulfate; initial wet tack;

    Abstract : The aim of the project was to investigate a green and sustainable replacement for boric acid in polyvinyl alcohol (PVA) adhesives for solid paperboard production. Boric acid acts as a cross-linker and tackifier in the adhesive but is classified as a harmful substance. READ MORE

  4. 23. Using deep reinforcement learning for personalizing review sessions on e-learning platforms with spaced repetition

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Sugandh Sinha; [2019]
    Keywords : ;

    Abstract : Spaced repetition is a learning technique in which content to be learned or memorized is reviewed multiple times with gaps in between for efficient memorization and practice of skills. Two of the most common systems used for providing spaced repetition on e-learning platforms are Leitner and SuperMemo systems. READ MORE

  5. 24. Design of Ultra High Performance Fibre Reinforced Concrete Bridges : A Comparative Study to Conventional Concrete Bridges

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Viktor Eriksson; [2019]
    Keywords : Bridge design; CO2 emissions; Mechanical properties and behaviour; Straight short steel fibres; UHPC; UHPFRC; Bro dimensionering; CO2 utsläpp; Korta raka stålfibrer; Mekaniska egenskaper och beteende; UHPC; UHPFRC;

    Abstract : The use of Ultra High Performance Fibre Reinforced Concrete (UHPFRC) in the construction industry started in the 1990s and has since then been used for bridges all over the world. The mechanical properties and the dense matrix result in lower material usage and superior durability compared to conventional concrete, but the implementation of UHPFRC in the Swedish industry has been delayed. READ MORE

  6. 25. 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