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Gypsum controls the cement's setting time; if it isn't added, the cement will set too quickly, leaving no time for placing concrete.
Gypsum controls the cement’s setting time; if it isn’t added, the cement will set too quickly, leaving no time for placing concrete.
See lessTo prevent early hardening and allow longer working time. And slow down setting time of cement.
To prevent early hardening and allow longer working time. And slow down setting time of cement.
See less