Shot Crete Mentioning Yuleba, Roma and Chinchilla - PowerPoint PPT Presentation

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Shot Crete Mentioning Yuleba, Roma and Chinchilla

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Yuleba Minerals Pty Ltd is and Australian company mining a high grade silica deposit in south west Queensland – PowerPoint PPT presentation

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Title: Shot Crete Mentioning Yuleba, Roma and Chinchilla


1
Shot Crete Mentioning Yuleba, Roma and Chinchilla
2
  • Shotcrete is usually an all-inclusive term that
    can be used for both wet-mix and dry-mix
    versions. In the pool construction trade however,
    the term "shotcrete" refers to wet-mix and
    "gunite" refers to dry-mix

3
  • Shotcrete undergoes placement and compaction at
    the same time due to the force with which it is
    projected from the nozzle. It can be impacted
    onto any type or shape of surface, including
    vertical or overhead areas.

4
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5
  • The dry mix method involves placing the dry
    ingredients into a hopper and then conveying them
    pneumatically through a hose to the nozzle. The
    nozzleman controls the addition of water at the
    nozzle.

6
  • The water and the dry mixture is not completely
    mixed, but is completed as the mixture hits the
    receiving surface. This requires a skilled
    nozzleman, especially in the case of thick or
    heavily reinforced sections.

7
  • Advantages of the dry mix process are that the
    water content can be adjusted instantaneously by
    the nozzleman, allowing more effective placement
    in overhead and vertical applications without
    using accelerators. The dry mix process is useful
    in repair applications when it is necessary to
    stop frequently, as the dry material is easily
    discharged from the hose.

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9
  • Wet-mix shotcrete involves pumping of a
    previously prepared concrete, typically
    ready-mixed concrete, to the nozzle. Compressed
    air is introduced at the nozzle to impel the
    mixture onto the receiving surface.

10
  • The wet-gun procedure generally produces less
    rebound, waste (when material falls to the
    floor), and dust compared to the dry-mix
    procedure. The greatest advantage of the wet-mix
    process is that larger volumes can be placed in
    less time.

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12
  • Yuleba Minerals located near Roma and Chinchilla
    produces the SP series of shotcrete products
    which are supplied as a dry mix in 20kg bulka and
    mini bulk bags and can be wet or dry pumped the
    product has been formulated around a fine sand to
    minimise product loses from rebound.

13
  • This makes the product ideal for spraying in and
    around steel reinforcing and where vertical and
    overhead spraying is required.

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  • The SP2, SP3 and SP4 formulations provide a range
    of ultimate compressive strengths which allows
    the user to select a product to meet a specific
    need or application.

16
  • The SP range of shot crete is used in underground
    coal mining for stoppings rib and roof support
    the product is available throughout the Bowen
    Basin, Emerald Mackay Queensland and Hunter and
    Gunnedah coal fields NSW.

17
  • To know more information please visit

http//www.yulebaminerals.com.au/
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