Crystal Deposits Ne Pool Wall

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garby74

Hi Guys,
Just wondering if anyone has come across this before? (please see attached images).
Basically we build concrete swimming pools. On the last couple of shells we have built we have a funny looking deposit coming through.
The shell is constructed with concrete, then we use a flexible tanking system (Hydro elastic), then on the last two projects we have used an (Nico bond) epoxy grout and adhesive.

Its only when we have used the epoxy that we have had these deposits.

The pools still hold water (phew!) but we would like to know what happening and why.

If anyone knows I would appreciate a response.

Wayne
 

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Crystal Deposits Ne Pool Wall
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