Lafarge

Holcim Technology Ltd

Vincent Morin

Ellis Gartner

Cédric Comparet

Günther Walenta

Isabelle Dubois-Brugger

Alexander Pisch

Matthieu Horgnies

Pascal Bost

Sylvain Duchand

Gilles Lecomte

Cedric Comparet

François Delarrard

A hydraulic binder which includes a clinker with a specific shape, the clinker including as main phases, given as weight percentages relative to the total weight of the clinker: (i) 70 to 95% of a belite phase having a particle size such that the Dv50 ranges from 5 to 15 &#x3bc;m; (ii) 5 to 30% of a calcium aluminoferrite phase; and (iii) less than 5% of minor phases; the clinker having an AlO/FeOweight ratio of less than 1.5; and the clinker including less than 5% of alite phase and less than 5% of calcium sulphoaluminate phase; and at least 0.5% dry weight of an activator made of calcium sulphate, as a weight percentage relative to the total weight of phases (i) to (iii).

Hydraulic binder and hydraulic composition comprising same

A hydraulic binder includes a belite sulfoaluminate clinker and silica having a BET specific surface area in nitrogen of at least 50 m/g, the quantity of silica being lower than or equal to 5%, the percentage being expressed as a mass percentage in relation to the mass of the binder.

Belite sulfoaluminate binder

The present invention relates to a process for the production of a clinker with a high content of belite, said process comprising the following steps:

Industrial process for the production of a clinker with a high content of belite

A composition includes at least, in % expressed by mass relative to the total mass of the composition, from 0.01 to 3% of polycarboxylic acid or salts thereof, the polycarboxylic acid including 2 to 4 carboxyl groups per molecule; and from 97 to 99.99% of a Belite-Calcium-Sulphoaluminate-Ferrite clinker (BCSAF clinker).

Additives for a hydraulic binder based on belite-calcium-sulphoaluminate-ferrite clinker

The present invention relates to a composition including at least a Portland clinker and a Belite-Calcium-Sulphoaluminate-Ferrite clinker (BCSAF).

Hydraulic binder with a base of sulfoaluminate clinker and portland clinker

A belite-calcium sulphoaluminate-ferrite (BCSAF) cement composition including: a BCSAF clinker which clinker has the following mineralogical composition, based on the total weight of the clinker: 5 to 25%, preferably 10 to 20%, of a calcium aluminoferrite phase having the general formula CAF, wherein X is from 0.2 to 0.8; 15 to 35% of a calcium sulphoaluminate phase; 40 to 75% of belite (CS); from 0.01 to 10% in total of one or more minor phases selected from calcium sulphates, alkali metal sulphates, perovskite, calcium aluminates, gehlenite, free lime and periclase and/or a vitreous phase; and an alkanolamine.

Growing community of inventors

Lyons, France

Vincent Morin