FIELD: chemistry.
SUBSTANCE: present invention relates to a hydraulic binder comprising, in parts by weight: (a) 40–70 parts of portland cement clinker; (b) 30–60 parts of fly ash; (c) optionally up to 30 parts of an inorganic material, other than clinker or fly ash; (d) 2.5–15 parts of sodium sulphate, expressed in parts Na2O equivalents relative to 100 parts of fly ash; and (e) 2–14 parts of calcium sulphate, expressed in parts of SO3, in relation to 100 parts of clinker; fly ash having a Dv97 value equal to or less than 40 microns, and the sum of (a), (b) and (c) is 100. In addition, the invention relates to a hydraulic composition containing said hydraulic binder, and to a method for its production, as well as to a moulded object comprising said hydraulic binder.
EFFECT: disclosed is a low-clinker hydraulic composition.
8 cl, 7 tbl
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