A thing which is used for binding purpose which makes the material harder, thick and allows it to remain intact is called as cement. Cement usually is in grey color and has powdered texture. Cement is very specifically used at construction sites. Cement is classified in two types which are hydraulic and non hydraulic. The terms have been elaborated as hydraulic cements are hydrated due o chemical reaction and non hydraulic cements must be kept in dry as because to retain their strength. The types of modern cement are portland cement as the main cement which is produced from heating limestone along with the small quantities of materials in a very common process method known as calcinations. The other type of cement includes slag lime cements and calcium aluminates cements.Famous cement manufacturing companies are ambuja cements, birla cements, jaypee cements and india cements which have catered to provide quality cement at the construction sites which is in building constructions. The term is very much similar to adhesives or glues. Cements are used for various purposes like binding sand and also gravel together. Cements contain silicon oxides which are used for manufacturing glass or vinyl cement. Cement which is generally used in the constructions is named as roman cement which produces the concrete resembling the portland stone which are widely used building in britain.
Typical portland cements are very much mixtures of tri calcium silicate and other mixtures in varying proportions. The main important ingredient is the gypsum which is added to slow down the hardening process. Portland cement is manufactured using lime bearing materials mainly lime stone along with clay and shale's. This cement play a significant part of the building constructions as it holds the material appropriately. Today cements are put in the cement mixers and are not mixed by hands as it was done earlier. Cements are also used for dental purpose as these are highly used to restore the dental work. Most famous and common one is zinc phosphate and composite resin.
