Portland Pozzolana Cement-Part 2 Calcined clay based - IS 1489 (Part -2)
An essentially silicious material which while in itself possessing little or no cementitious proper ues will, in finely divided form and In ~he presence of water, react with calcium hydroxideat ambient temperature to form compounds possessing cementitious properties. The term includes natural volcanic material having pozzoIanic properties as also other natural and artificial materials, such as diatomaceous earth, calcined clay and fly ash
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