Answer / 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

Answer / mohamed radwan

there is many type of gypsum like type 1, and type 2 which is recommened for hot weather .

Answer / leo

dont think it will have a effect on the strength. But it
will slow the setting(hardening) time of the concrete.
this is not a valid answer cause im only a second year student

Answer / tep

5% would be the perfect amount to add on concrete. it adds
compressive strength thus maintaining its hydration.

I have used the proportion of cement:sand:gravel, is 1:2:4. cement and the sand was provided by the company but i provided the gravel. this combination was used to fill 500 cubic ft of wall. now i want to know how much gravel was used in making the wall. can you guys please help me?

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