There are some cements such as the aluminous, derived from aluminous and lime materials, that are black ( melanocratic ).
2.
To aid the farmer in determining the relative value of competing agricultural liming materials, the agricultural extension services of several universities use two rating systems.
3.
Calcium Carbonate Equivalent ( CCE ) and the Effective Calcium Carbonate Equivalent ( ECCE ) give a numeric value to the effectiveness of different liming materials.
4.
Traditionally a render would be manufactured on site by a plasterer mixing sand, cement and sometimes lime material together with water to produce his render.
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