Hydraulic binder with low clinker content

摘要

A hydraulic binder includes, in parts by mass: (a) from 20 to 60 parts of Portland clinker; (b) from 20 to 40 parts of slag; and (c) from 0 to 60 parts of inorganic material other than the clinker and the slag; the sum of (a), (b) and (c) being equal to 100 parts; which binder further includes a slag activator including, relative to 100 parts of the sum of (a) and (b): from 1.4 to 6.55 parts of alkali metal salt, expressed as equivalent-Na2O; and from 1.1 to 11.0 parts of calcium sulfate, expressed as SO3.

主权项

1. Hydraulic binder comprising, in parts by mass:
(a) from 20 to 60 parts of Portland clinker; (b) from 20 to 40 parts of slag; (c) greater than 0 and up to 60 parts of inorganic material other than the clinker and the slag; the inorganic material comprising a pozzolan, calcined shale, calcium carbonate, silica fume, metakaolin or a mixture thereof; the sum of (a), (b) and (c) being equal to 100 parts; and a slag activator comprising, relative to 100 parts of the sum of (a) and (b):
from 1.4 to 6.55 parts of alkali metal salt, expressed as equivalent-Na2O; and from 1.1 to 11.0 parts of calcium sulfate, expressed as SO3;which binder comprises no fly ash,wherein the inorganic material is made of particles having a Dv90 less than or equal to 200 μm, wherein Dv90 is the 90th percentile of the size distribution of the particles of the inorganic material, by volume.