PARTICULATE ADDITIVE FOR DISPERSING ADMIXTURES IN HYDRAULIC CEMENTS

摘要

The invention relates to a particular additive and method for dispersing an admixture in a cementitious composition comprising a hydraulic cement, to provide activation of the admixture on mixing of the cementitious composition with water wherein the particles of the particulate additive comprise a carrier comprising pozzolanic material and an admixture bound to the particulate carrier wherein the particles of the additive have a median particle size of between one tenth and one half of the median particle size of the cement used in the cementitious composition.