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Home / Civil Engineering / 208160pw/ Chapter Four

  • Effect Of Reprocessed Pure Water Sachet (pws) On The Properties Of Wood Wool
    [A CASE STUDY OF OMO WOOD ALSTONIA LONGENSIS]

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    • CHAPTER FOUR -- [Total Page(s) 7]

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    • 4.3    DISCUSSION OF RESULTS
          The average density of the cubes produced without reprocessed pure water sachets and having a mix ratio of 2:1:1 is 706.66kg/m3 while the average density of cubes produced with processed pure water sachets and having a mix ratio of 2:1:1:1 is 810.67kg/m3. The average density of the cubes produced without reprocessed pure water sachets and having a mix ratio of 1:1:1 is 437.33kg/m3 while the average density of cubes produced with reprocessed pure water sachets and having a mix ratio of 1:1:1:1 is 645.33kg/m3.
          The average water absorption rate of cube produced without reprocessed pure water sachets and having a mix ratio of 2:1:1 is 19.3% while the average water absorption rate of cubes produced with reprocessed pure water sachets and having a mix ratio of 2:1:1:1 is 20.46%. The average water absorption rate of cubes produced without reprocessed pure water sachets and having a mix ratio of 1:1:1 is 18.2% while the average water absorption rate of cubes produced with reprocessed pure water sachets and having a mix ratio of 1:1:1:1 is 19.56%.
          The average compressive strength of cubes produced without reprocessed pure water sachets and having a mix ratio of 2:1:1 is 17.27N/mm2 while the average compressive strength of cubes produced with reprocessed pure water sachets and having a mix ratio of 2:1:1:1 is 12.29N/mm2. The average compressive strength of cubes produced without reprocessed pure water sachets and having a mix ratio of 1:1:1 is 11.27N/mm2 while the average compressive strength of cubes produced with reprocessed pure water sachets and having a mix ratio of 1:1:1:1 is 10.33N/mm2.
          The average value of compressive strength show that the cubes without reprocessed “pure water sachet” gave a higher average compressive strength than those with reprocessed pure water sachet. It can also be seen that wood wool cubes cast with ratio of 2:1:1:1 and 2:1:1 gave a higher average water absorption percentage than 1:1:1:1 and 1:1:1. It was also observed during the process of casting of the cubes that it is only when the wood strands were broken down to bits that it can mix properly with the cement paste.

    • CHAPTER FOUR -- [Total Page(s) 7]

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    • ABSRACT - [ Total Page(s): 1 ]ABSTARCT COMING SOON ... Continue reading---

         

      CHAPTER ONE - [ Total Page(s): 2 ]CHAPTER ONE BACKGROUND TO THE STUDY1.0    INTRODUCTIONRight from when man stated to build, he has been compelled to use the locally available materials around him. Building has now become major construction material allover the world has necessitated a critical study of its constituent materials. More so, the present economic crunch calls for cost saving measures on the part of engineers/researchers involved in the management of the country’s project.Hence, the need for researchers to ... Continue reading---

         

      CHAPTER TWO - [ Total Page(s): 4 ]Resistance of wood wool cement board against fungi attack also depends on the alkaline nature of the cement, since these micro-organisms prefer slightly acidic environment. Wood wool cement board have a thermal resistance of 0.18m2 ho/Kcal, a board specific gravity of 0.6 and thickness of 15mm respectively: thermal resistance increase with a decrease in specific gravity and an increase in thickness (Shigekura, 1989). While on the other hand, sound absorption was rated as 0.75 at 4000c/s for boar ... Continue reading---

         

      CHAPTER THREE - [ Total Page(s): 1 ]CHAPTER THREEMETHODOLOGY3.1    INTRODUCTION    The production of the cubes involves the construction wooden moulds, acquisition of materials, mixing of the cube materials, pressing and curing. A laboratory test on the physical and mechanical properties of the cube is carried out.3.2    MATERIALS PROCUREMENT    The wood planks used were procured from the sawmill at Irewolede and it is commonly known as Omo wood (Alstonia Longesis). The wood planks were cut into thinner planks with a m ... Continue reading---

         

      CHAPTER FIVE - [ Total Page(s): 1 ]4.3    DISCUSSION OF RESULTS    The average density of the cubes produced without reprocessed pure water sachets and having a mix ratio of 2:1:1 is 706.66kg/m3 while the average density of cubes produced with processed pure water sachets and having a mix ratio of 2:1:1:1 is 810.67kg/m3. The average density of the cubes produced without reprocessed pure water sachets and having a mix ratio of 1:1:1 is 437.33kg/m3 while the average density of cubes produced with reprocessed pure water sachet ... Continue reading---

         
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