History and utilization of portland blast furnace slag cement. Difference between ordinary portland cement, portland. Molten slag diverted from the iron blast furnace is rapidly chilled, producing glassy granules that yield. The hydration process of slag cement is more complicated than portland cement.
Psc is obtained by mixing portland cement clinker, gypsum and granulated blast furnace slag in suitable proportions and grinding the mixture to get a thorough and intimate mixture between the constituents. Cement types, composition, uses and advantages of nanocement, environmental impact on cement production, and possible solutions. The same quality control procedures used for conventional portland cement concrete can be used for concrete containing ggbfs. It is a mixture of portland cement and ground granulated slag obtained during the production of pig iron using a blast furnace. It may also be manufactured by separately grinding portland cement clinker, gypsum and granulated slag and then mixing them intimately. Blast furnance slag user guideline portland cement. The properties of slag cement and its influence on the structure of. Blast furnace slag cement manufacture, properties and uses. Licence is granted to use standard mark on portland slag cement as per is 455. Properties of blastfurnace slag cement concrete subjected to. Slag cement is a hydraulic cement formed when granulated blast furnace slag ggbfs is ground to suitable fineness and is used to replace a portion of portland cement. The resultant product is cement which has physical properties similar to opc. The primary issue associated with the use of slag cement is the reported loss of durability salt scaling resistance for exposed portland cement concrete containing more than about 25 percent slag cement. It is a recovered industrial byproduct of an iron blast furnace.
Portland slag cement is obtained by mixing portland cement clinker, gyplum and ifanulated sla,in suitable proportions and grinding the mixture to get i thorough and intimate mix between the consti tuents. Pdf performance evaluation of ordinary portland cement with. Pdf cement types, composition, uses and advantages of. Blast furnace slag cement is the mixture of ordinary portland cement and fine granulated blast furnace slag obtained as a by product in the manufacture of steel with percent under 70% to that of cement. Performance evaluation of ordinary portland cement with ggbfs.
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