“…Among natural pozzolans used for the improvement of durability and strength parameters of lime mortars belong zeolite [22,23,24], volcanic ash [25,26], pumice [27], diatomite [28,29], etc. Artificial pozzolans usually come from thermal processing (metakaoline [30,31], perlite [32]), coal and agricultural product combustion (coal fly ash [33], palm oil ash [34,35], sugar cane bagasse ash [36], rice husk ash [37]), calcination of different types of clays, or are in the form of industrial by-products (ground ceramic waste [38], brick powder [39], silica fume [40], ground granulated blast furnace slag [41], cement kiln dust [42], waste graphite powder [43], etc.). As most of these pozzolanic materials found are already used in PC-based concrete manufacturing that consumes large quantities of natural as well as artificially produced materials, there is a need to look for further active mineral admixtures that could potentially improve properties of lime-based materials, especially for those that are low-cost, renewable, available in huge quantities, and have no better usage both from the economic and environmental point of view.…”