Browsing by Author "Abhilash Thakur, M"

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    Comparitive Study, Fabrication And Testing Of Insulation Bricks
    (2015-12-23T12:57:33Z) Abhilash Thakur, M; Akhil, Rajendran; Melvin, Mathew; Sri Vishnu, R
    The present study deals with the Comparison, Fabrication and Testing of Insulation bricks. Rice husk is used as an additive along with raw materials such as Kyanite and Bikaner clay. The use of rice husk decreases the Thermal Conductivity of the brick thereby increasing its application in high temperature refractories. When the rice husk burns, it opens the pores in the insulation brick. Thus, the apparent porosity of the insulation brick increases with addition of rice husk. Also the mass of the bricks reduces. Therefore the Bulk Density decreases. The Cold Compression Strength reduces as the porosity of the bricks increases. This is due to the inability of the brick to withstand a greater load at higher temperature. The Permanent Linear Change of the insulation brick reduces. Insulation bricks usually shrink when heated. By adding rice husk in adequate proportions, the shrinkage is seen to considerably lessened. The Pyrometric Cone Equivalent is a test done to check the temperature at which the material softens. Therefore it determines the softening temperature of the material. The higher the Pyrometric cone equivalent value, the better is the heat resistance offered by the material. Finally, the Thermal conductivity of the material reduces. This increases the insulation property of the brick which makes it suitable to be used in high temperature applications.