Process for the preparation of cement mortars concrete compositions containing a calcium carbonate based filler treated with an ultrafine filler and a superplasticizer compositions and cement products obtained and their applications

摘要

Process for the preparation of cement / mortar / concrete compositions or systems (for simplicity hereafter "cement" compositions or systems or even "cements" ) of a generally known type containing low or medium (standard) "filler(s)" and/or optionally HP filler(s) as carbonate based filler(s) namely coarse low or medium calcium carbonate(s) namely coarse marble(s); Product comprising or consisting of the pre blend (A) of coarse low or medium (or optionally HP) "calcium carbonate based filler" pre blended with at least an UF; Aqueous compositions (B) obtained by mixing the above pre blend (A) of coarse filler(s) with UF(s) with an aqueous system such as mix water aqueous mix fluid; Product (C) consisting of or comprising the pre blend (A) or the compositions (B) treated or pretreated with at least one superplastifier or aqueous system containing superplastifier(s); Cement and Use of cement.