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2. Concrete degradation - Wikipedia

   en.wikipedia.org/wiki/Concrete_degradation

   It is the considerable forces internally created by the expansion of the iron corrosion products (about 6 – 7 times less dense than metallic iron, so 6 – 7 times more voluminous) that cause the cracks in the concrete matrix and destroy reinforced concrete. In the absence of iron (and without some harmful chemical degradation reactions also ...

3. Limescale - Wikipedia

   en.wikipedia.org/wiki/Limescale

   Descaling agents are commonly used to remove limescale. Prevention of fouling by scale build-up relies on the technologies of water softening or other water treatment. This column in the Bad Münstereifel church in Germany is made from the calcium carbonate deposits that built up in the Roman Eifel Aqueduct over several centuries of use.

4. How to Clean Grout: 8 Ways to Get Your Tiles Sparkling ... - AOL

   www.aol.com/clean-grout-4-ways-tiles-010000278.html

   1. How to clean grout with a bleach solution. As previously mentioned, acidic cleaners and grout don’t mix. Fortunately, that’s not such a big deal since one of the most common household ...

5. Alkali–silica reaction - Wikipedia

   en.wikipedia.org/wiki/Alkali–silica_reaction

   The main phases are the calcium silicate hydrates (C-S-H) (the "glue" in cement paste), calcium sulfo-aluminate phases (AFm and AFt, ettringite) and hydrogarnet. C-S-H phases are less soluble (~ 10 −5 M) than portlandite (CH) (~ 2.2 10 −2 M at 25 °C) and therefore are expected to play a negligible role for the calcium ions release.

6. Calthemite - Wikipedia

   en.wikipedia.org/wiki/Calthemite

   Degrading concrete has been the focus of many studies and the most obvious sign is calcium-rich leachate seeping from a concrete structure. [5] [6] [7]Calthemite stalactites can form on concrete structures and "artificial caves" lined with concrete (e.g. mines and tunnels) significantly faster than those in limestone, marble or dolomite caves.

7. This $7 Grout Cleaner Is All Over TikTok—Here’s Why - AOL

   www.aol.com/7-grout-cleaner-over-tiktok...

   The post This $7 Grout Cleaner Is All Over TikTok—Here’s Why appeared first on Reader's Digest. If your grout is gross and you hate spending hours scrubbing your bathroom tiles, Zep Grout ...