Gypsum is added in cement for initial setting time increase or decrease?

[Sumit Civil]

Gypsum is added in cement for initial setting time increase or decrease?

 

[prashanth b]

Increasing initial setting time.

 

[shafi12344]

increase

 

[PALLAVI M.]

Basically gypsum is a retarder so it delay the setting time

 

[Dnyan Deshmukh]

if Gypsum is not added in cement, cement will set directly when water gets added into it and very harsh concrete gets produced with no workablity.

addition of Gypsum provide us increase in time which delays / retards setting of cement.