Glass – direct radiation

A house using direct radiation should act as a sun catcher. The sun's rays should penetrate to its interior as much as possible and be absorbed there by the internal elements of the structure, tj.; ceilings, …
Home and renovations

A house using direct radiation should act as a sun catcher. The sun's rays should penetrate to its interior as much as possible and be absorbed there by the internal elements of the structure, tj.; ceilings, …

The concrete sewage settling tank is to be renovated. A poorly adhering cement grout was found on its inner surface. Expected loads: sewage temperature in summer approx. 313 K (40°C), Winter 193 K (20°C); …
What pigments are not suitable for silicate paints and why?
The following pigments are not suitable for silicate paints: chrome yellow, chrome green, zinc yellow, zinc green, cynober, manganese violet, blue …