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Special concrete for colorbond fence ??

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  1. #1
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    Default Special concrete for colorbond fence ??

    My mates next door neighbour wants to replace the old shared fence with a new colorbond fence, i said i would give him a hand building it . The neighbour is paying for materials and we are supplying the labour. the neighbour says we must use a certain type of concrete for the post holes, as standard concrete will eat away at the colorbond!!! Before i tell him that he is talking through his ass, i thought that i should ask the forum cos i hate the taste of humble pie.. !!

  2. #2
    1K Club Member Pulse's Avatar
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    Talking through his..... Ask him what sort of concrete, never heard that before

    cheers
    Pulse

  3. #3
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    Hi jiggy,

    as standard concrete will eat away at the colorbond
    jiggy - the only steel you can use as posts is galvanised in wet concrete - ZincAlum & Colorbond you cannot use. The colorbond fence supplier must supply posts that are galvanised (zinc coated only) as the aluminium reacts to the alkaline content of wet concrete. Zincalum & Colorbond will rust & degrade quickly if immersed in wet concrete. As far as the concrete goes - I am not aware on a special concrete that will not affect colorbond or zincalume!

    Here is the link to the BlueScope Technical Data Sheet that explains a bit more information! Maybe some of the concretors have some info on special concrete since BlueScope has no further data on this.

    N.B. I haven't heard of special concrete either Pulse! (But to double check - maybe ask in the concretors section before you tell him?)

  4. #4
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    A fencer told me that you can't use the quick set bags where you just add water (or whatever it's called ) it has to be mixed the old fashioned way.

    Cheers

  5. #5
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    It's not April fools is it ?
    Security Fencing Specialist
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  6. #6
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    It's not April fools is it ?
    Certainly looks like it Fenced Out !

  7. #7
    1K Club Member autogenous's Avatar
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    Quick set concrete probably has calcium chloride as a cure accelerator which will rust metals, obviously galv is a bit more resistant.
    https://www.instagram.com/perth_bricklayer_wa

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