Ground with a small amount of gypsum into a powder to Resulting hard substance, called ‘clinker’, is then Materials that have been included ih the mix. Used type of cement(often referred to as OPC).PortlandĬement is a basic ingredient of concrete, mortar and non Make ‘Ordinary Portland Cement’, the most commonly As a construction material,Ĭoncrete can be cast in almost any shape desired and Concrete is aĬomposite material consisting of aggregate (gravel and The most common use for portlandĬement is in the production of concrete. The chemical reaction that results when theĪnhydrous cement powder is mixed with water Of the mixture’s water content they can hardenĮven underwater or when constantly exposed to wet Portland cement) harden because of hydrationĬhemical reactions that occurs independently Portland cement may be gray or white.Ĭement used in construction is characterised as Once hardened, can become a structural (load baering)Įlement. Produces hydrates that are not water-soluble.
Must be kept dry in order to retain their strength. On the other hand, Pit sand is obtained from pits in the For example, Sea sand obtained from seaĬontains unwanted salts and retards setting of cement Sand obtained from different sources has different
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