Ordinary Portland cement is form from materials of limestone or chalk and clay in proportion of 78and 22% respectively. The limestone and the clay are crushed and water is added to form slurry. The slurry is the heated at a high temperature in a klin to form clinker. The clinker is grinded into a powder and a range of gypsum is added which generate setting or hardening when water is added.
There are 3 types of cement,OPC (Ordinary Portland cement)PPC (Portland pozzolona cement)Special Cements.
The content of C3S in cement depends on type of cement.If it is Ordinary Portland Cement, then the C3S content is 95%; andif it is Pozzolona Portland Cement, c3s is 65% - 70%
Ordinary Portland cement (OPC) is by far the most important type of cement.The OPC was classified into three grades, namely 33 grade, 43 grade and53 grade.High heat of hydrationInitial setting time is 10 minsFinal setting time is 10 hrs.It is used in construction of buildings, bridges, hydraulic structures,etc.,
Basic chemical elements in Portland Cement are calcium, silicon, aluminum and iron oxide.....
The cost of Portland cement varies depending on where you live and the amount you are purchasing. Portland cement can be purchased in bulk for large jobs and prepackaged for smaller jobs.
The various types of ordinary portland cement are,Ordinary portland cement 33 gradeOrdinary portland cement 43 gradeOrdinary portland cement 53 grade
Ordinary Portland cement is suitable. As per IRC 21, Portland Pozzolana Cement is limited for Plain Concrete only.
There are three different types of cement,Ordinary portland cementPortland pozzolana cementSpecial cements.There are 3 types of cement,OPC (Ordinary Portland cement)PPC (Portland pozzolona cement)Special Cements.There are many types of cement. These include gray ordinary Portland cement, well cement, hydraulic cement, as well as bagged cement.There are three different types of cement,Ordinary portland cementPortland pozzolana cementSpecial cements.
There are 3 types of cement,OPC (Ordinary Portland cement)PPC (Portland pozzolona cement)Special Cements.
OPC - Ordinary Portland cementOPC - Materials used - Argillaceous and calcareous materialsPPC - Portland Pozzolona CementPPC - OPC + Pozzolonoc materials(fly ash, volcanic ash, pumicite at the time of grinding).
Ordinary Portland cement is the most common cement used in the world, made from stucco, concrete, mortar and other materials. Slag cement is usually mixed with Portland cement and is the substance leftover after metal has been smelted from raw ore.
dis advantage of ordinary portland
Portland cement (often referred to as OPC, from Ordinary Portland Cement) fineness 300 - 500 m2/kg
The density of Portland cement is 1.44 ton/m3.
Kinds of portland cement:Type - 1 - Ordinary portland cementType - 2 - Portland pozzolana cementType - 3 - Rapid hardening cementType - 4 - Low heat cementType - 5 - Sulphate resisting cement.
cement experiy time
Type-I - Ordinary portland cement used in general constructionType-II - Portland pozzolana cement , moderate heat of hydrationType- III - Rapid hardening cement used for quick setting worksType-IV - low heat cement, low heat of hydrationType-V - Sulphate resisting cement used in sewage linings,marine construction.