Does cement need to be added to hydrated lime?
Yes. In fact, hydrated lime is added to cement-sand mortar to promote workability in the fresh mortar, and to promote ‘self-healing’ in the hardened mortar. Hydrated lime on its own will not set and harden in a way that is useable in bricklaying.
Which mixes proportions should be used with Hydrated and Natural Hydraulic lime?
The mix proportions depend on the application for the mortar. Please refer to our technical datasheets for these products for guidance.