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The final and primary the settig time :
the primary
Is the time from the moment you add water to the dry cement and even enter in the cement paste Vicat needle for a distance of less than5 mm from the bottom of the templatethe final
Is the time from the moment you add water to the dry cement until the moment you leave the needle fabkat cement paste by the impact while none effect to section installed on the needle
The initial setting time is the interval between the mixing of the cement with water and the time when the mix has lost plasticity.
The final setting time is the point at which the set cement has acquired a sufficient firmness to resist a certain defined pressure.
I do not know, because I am system analyst
the initial setting is time when chemical reaction between cement and water is start and it should be not less than45 minuts without additive.
final setting is the time when the chemical reaction between cement and water is finished and it should be not more10 hours according egyptian specification.
Thank you for the invitation but the question is not within my expertise.
