About the chemical formula of lime

Chemical formula of lime: CaO (calcium oxide).

Lime is strongly alkaline, and at room temperature, it can react with activated silica or activated alumina in glassy state to produce products with water-hardening properties and produce cementation. Therefore, lime is also an important raw material in the building materials industry. The process of lime (CaO) reacting with water to produce calcium hydroxide is known as lime ripening or digestion. The product of the reaction, calcium hydroxide, is called slaked lime or quicklime.

Expanded Information:

Quality Requirements for Lime:

The components that produce the cementitious properties of lime are the effective calcium oxide and magnesium oxide, whose content is the main indicator of the evaluation of lime The content is the main index to evaluate the quality of lime. Effective calcium oxide and magnesium oxide content in lime can be measured directly, can also be reflected by the total amount of calcium oxide and magnesium oxide and carbon dioxide content, quicklime and undigested residue content requirements; lime powder has the fineness requirements.

The national building materials industry divides construction quicklime, construction quicklime powder and construction lime powder into three grades of superior and qualified products. However, in the transportation sector, JTJ 034-2000 "highway pavement grass-roots construction technical specifications" is still according to the original national standard (GB1594-79) will be divided into three grades of quicklime and slaked lime.

Baidu Encyclopedia-Lime