So, first of all, I am not a chemist, but as a civil engineer I have to know some very basic chemistry principles to do my job properly.
For example being familiar with the reaction occurring in concrete, combine the materials and construction layers properly to avoid for example dissimilar metal corrosion, use the proper surface materials which are resistant to physical and chemical stress, degree of flammability of materials or what dangerous combustion product they create, etc.
And also there is other reason which is why I am interested in chemistry, and that is my hobbies.
Battery chemistry - battery packs rebuilding projects, using different chemicals as cleaning products, rust, limescale removal, repurposing old building materials, electrolysis, galvanization, electroplating etc.
Current project: Repurposing old synthetic varnishes/paints to create waterproof floor coating. Surface – Concrete, plaster and ceramic bricks
P.S.: Sorry my poor English