Browsing by Author "ISSAYAS KEBEDE WORKU"

Filter results by typing the first few letters
Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    PERFORMANCE EVALUATION OF CONCRETE MADE BY PARTIALLY REPLACING CEMENT WITH GRANITE POWDER
    (Hawassa University, 2020-10-21) ISSAYAS KEBEDE WORKU
    This experimental investigation has been performed to evaluate the strength and durability properties of concrete, in which cement was partially replaced with granite powder at 0%, 5%, 10%, 15% and 20% by volume. A total of five concrete mix proportions were developed for control and concrete with granite powder. Fresh properties of concrete using slump test and strength and durability tests on hardened concrete were performed. Compressive strength test and flexure tensile strength test were done to evaluate the strength properties. To study the durability properties, water absorption test, Sorptivity test, chloride attack test and sulphate attack tests were performed on all concrete mixes, and these strength and durability tests were done for C20/25 as normal and C55/67 as high strength concrete. The experimental result showed a positive influence in strength and durability properties of concrete. The workability of concrete decreased as the percentage replacement increased in both C20/25 and C55/67 grade concrete. The compressive strength was enhanced up to 10% replacement in C20/25 and at 5% replacement in C55/67 concrete. The flexural tensile strength was improves up to 10% in both concrete grades. Denser concrete against water absorption was made at 5% & 10% in C20/25 and at 5% in C55/67. The initial rate of water absorption (Sorptivity) was good at 5% in C20/25 and at 10% in C55/67. The secondary rate of absorption was enhanced for all replacements in C20/25 concrete but for none of the replacements in C55/67.The resistance to chloride and sulphate attack was better at all percentage replacement in both concrete grades