01/09/2026
Concrete looks permanent. It isn't.
In water treatment environments, the chemistry is brutal. Hydrogen sulphide gas converts to sulphuric acid in the presence of moisture. That acid attacks concrete at the surface, and over time, you can lose 20mm or more of the structural layer.
The early signs are easy to miss: a slightly rough texture, minor surface scaling, a faint smell. By the time it's obviously failing, significant damage has already been done.
Routine inspection and proactive surface protection are always cheaper than emergency repair.