Will the cement board rust?
Reinforced concrete cement board pouring density is good, long-term bubble in the water will not rust cracking.
Time if long-term, of course, can be imagined that ordinary cement is a portland cement, urine containing hydrochloric acid, after a long period of time into the hydrochloric acid will produce corrosion of cement will be metamorphosed in advance, it must be affected.
Reinforced concrete (English: Reinforced Concrete or Ferroconcrete), engineering often referred to as reinforced concrete (tong). Refers to a composite material that improves the mechanical properties of a concrete by cooperating with a composite material consisting of reinforcing steel bars, steel plates or fibers in concrete. For the most common form of stiffened concrete.