CAN WE ADD SOME EXTRA QUANTITY OF GYPSUM INTO CONCRETE?
WHAT PERCENTAGE WE CAN ADD? WHAT IS THE EFFECT ON STRENGTH?

Answer Posted / guest

Gypsum is a mineral. it is name in chemical is calcium
sulphate.Mainly it control setting time of cement.
generally it pecrentage 3%. Excess gypsum slow the setting
time. is not link with strength

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