Mediterranean Colors, LLC
3060 Kerner Blvd. Suite T
San Rafael, CA 94901
(415) 455-9896
 
 

Lime Cycle

The preparation of lime plaster involves a calcium carbonate (limestone) as the raw material and its conversion into lime, which results in a workable compound bindng all the ingredients.

  • First quicklime is obtained from the heating of limestone at 1600° F ( versus 2000° F for Hydraulic Lime and 2400°F for Portland cement.
  • At that stage, quicklime may be converted into calcium hydroxide (hydrated lime) by adding a controlled amount of water to adjust its chemical affinity.
  • This process disintegrates the lumps, pebbles, and granules found in quicklime, leading to a fine white powder ready to be mixed with the appropriate aggregates and mineral admixtures.
  • As the lime plaster is applied onto the wall it cures and hardens. Its calcium hydroxide (lime) slowly absorbs carbon dioxide in the air. In the process the calcium hydroxide is converted back into the parent material calcium carbonate (limestone), producing an  durable, protective mineral crust.