Concrete Pool Shell Problems | Weepers, Efflorescence, and Calcium Nodules
00:00 - Intro
02:54 - Water chemistry did not cause these problems. These are structural issues.
03:54 - Three main problems: weepers, efflorescence, and calcium nodules.
04:09 - Weepers are active leaks in concrete, where water is flowing through concrete. Usually this is from behind the concrete shell due to groundwater pressure. But it can also be on a raised wall where the pool itself pushes through a weakness in concrete.
06:23 - Shotcrete is applied pneumatically, and the density of it is important. Minimum 4000 PSI.
08:07 - Concrete is not waterproof, it's porous.
10:02 - When water…
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