Non-hydraulic lime
England in 2008, defines non-hydraulic lime (or putty lime) as: ‘Lime which will not set by chemical reaction with water but requires exposure to carbon dioxide in the air in order to harden. Unlike hydraulic limes (see Hydraulic lime), it is derived from pure limestone. It is commercially available in powder (hydrated) or putty form.’
See also: Hydraulic lime.
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