Gypsum is a mineral and is hydrated calcium sulfate in chemical form. Gypsum plays a very important role in controlling the rate of hardening of the cement. During the cement manufacturing process, upon the cooling of clinker, a small amount of gypsum is introduced during the final grinding process.
Gypsum is added to control the “setting of cement”. If not added, the cement will set immediately after mixing of water leaving no time for concrete placing.
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This question is taken from book named – A Closer Look at Prevailing Civil Engineering Practice – What, Why and How by Vincent T. H. CHU.
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what is the role of gypsum. if we are add2.50% gypsum for grinding cement and same clinker we add 4.0% gypsum for grinding cement. what is the effect in compressive strength.
We are adding the gypsum not only for control the setting of cement. It is contribute for cement early strength by SO3.
more the stress more the modulus of elasticity
gypsum used in cement manufacturing acts as what.???
manufacturing of cement,type of cement, percentage gypsum in cement
How gypsum work as a retarder in cement?
adding of gypsum to concrete decrease the compressive strength of concrete or not????
Gypsum also influences the grindability of the cement, that is the grinding energy required to produce cement.
What minimum purity for gypsum used in cement
retarder, preventing flash setting of cement