What is the difference between Hydrated Lime and Hydraulic Lime?
Hydraulic Lime and Hydrated Lime have basically the same chemical composition, however, hydraulic lime has its initial setting with water (similar to cement) and a second setting with recarbonation (the absorption of CO2). Hydrated lime does not set with water and only undergoes recarbonation. Cheney Lime & Cement Company produces a type N hydrated lime, which is used chiefly for its chemical characteristics. Hydrated lime that is used for construction purposes (stucco, etc.) represents only modest quantities compared to the chemical uses.
