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Gypsum is added to Portland cement during the manufacturing process in order to control the set time of the cement. As gypsum is added, it reduces the rate of hydration and the amount of calcium silicate hydrate (CSH) production, thus slowing down the hardening of the cement. This allows the cementRead more
Gypsum is added to Portland cement during the manufacturing process in order to control the set time of the cement. As gypsum is added, it reduces the rate of hydration and the amount of calcium silicate hydrate (CSH) production, thus slowing down the hardening of the cement. This allows the cement to remain workable for a longer period of time and helps create a more consistent product.
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