Unexpected lime is a fire hazardous substance.

Another air astringent material is lime, which can be ineffective and ground. Increased lime is obtained when firing limestone and is used for the manufacture of special solutions for concrete and masonry, as well as for silicate brick. Before use, the unsuccessful lime is extinguished with water, then it is kept for two weeks and used only after that to prepare a lime solution, be sure to mix it with sand. Unexpected lime is a fire hazardous substance.