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Reservoir Refurbishment

  • 1.  Reservoir Refurbishment

    Posted 27 March 2019 01:34
    ​We have recently refurbished a concrete reservoir that was commissioned in 1980.  After sealing a horizontal joint close to the top, we filled up the reservoir and we observed a leak on the outside around the joint that was sealed.  Being an old reservoir it was noted that there were vertical cracks after the reservoir sat empty for 2 years.  We believe that these may self heal given some time but I am interested in knowing if anyone has any experience with a similar situation.  The contractor is willing to come back and redo the work if we let it sit for a few months during the defect period.  Your input will be appreciated.
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  • 2.  RE: Reservoir Refurbishment

    Posted 27 March 2019 21:16
    hi Alison, may I suggest try talking to these people, ive found them very helpful with issues like you have.
    https://aus.sika.com/en/group/need-specification-details-.html
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  • 3.  RE: Reservoir Refurbishment

    Posted 28 March 2019 18:06
    Hi Alison

    Do you have any photos of the area leaking, detials of joint repair and head of water at leak area. We know most of the products available and how to use them.

    regards Dave Edgley
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  • 4.  RE: Reservoir Refurbishment

    Posted 02 April 2019 22:52
    G'Day Alison,
    Yes, the concrete tank may self heal and take up the leakage from the vertical cracks, but given the tank is close to 40 years old, I would consider:
    1. Applying a product "XYPEX" (or equivalent) to the outside of the tank to promote self healing, OR
    2. Grinding out the crack and then apply a cement slurry with the "XYPEX" (or equivalent) admixture… This is the preferred method but requires more effort.

    XYPEX link: https://www.xypex.com.au/repair

    Regards,
    Bede


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  • 5.  RE: Reservoir Refurbishment

    Posted 02 April 2019 23:16
    Hello Alison,
    Yes, the concrete tank may self heal and take up the leakage from the vertical cracks, but given the tank is close to 40 years old, I would consider:
    1.      Applying a product "XYPEX" (or equivalent) to the outside of the tank to promote self healing, OR
    2.      Grinding out the crack and then apply a slurry with the "XYPEX" (or equivalent) admixture… This is the preferred method but requires more effort.

    XYPEX link: https://www.xypex.com.au/repair


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  • 6.  RE: Reservoir Refurbishment

    Posted 02 April 2019 23:36
    Thank you to all for your responses.  We are trying to avoid lining/coating the entire reservoir if not needed.  If leakage does not minimize of the next few days (it has shown signed of lessening over the past few days), then we will certainly consider for rigorous rehabilitation.  I believe we have enough input now to move forward.  So thank you again for all the responses.

    END REQUEST​
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