04-10-2017, 10:31 PM
dave1905 Wrote:You don't make cement using gypsum. You make wallboard (drywall) and plaster using gypsum.
Cement is made using lime.
Also you may be confusing a cement plant and a concrete plant. A cement plant takes lime (and other ingredients) cooks and grinds it to make cement. A concrete plant takes cement, adds sand and aggregates and makes concrete.
Portland cement's mix uses gypsum to help it flow. The bulk material is still limestone or the like. I lived near Austin for a long time and saw the GRR in operation hauling limestone. It's a larger scale commodity than I want to model. I think I read that gypsum is high single digits in the final mix so it would be a few cars a day.
Sent from my iPhone using Tapatalk