Lafarge

Chryso

Lafarge Sa

Lafarge Gypsum International

Continental Building Products LLC

David Rinaldi

Horacio Naranjo

Jean-Michel Faure

Olivier Watt

Hakimi Yahiaoui

Martin Mosquet

Serge Sabio

Bruno Pellerin

Emmanuel Villard

Alain Jacquet

Philippe Maitrasse

Pascal Boustingorry

Alexandre Desseroir

Isabelle Sgro

Jean-Michel Laye

Laurent Meunier

A process to inert non-swelling clays in at least one mineral component intended for the preparation of a hydraulic composition, including the addition, to the hydraulic composition, to the mineral component or to one of the other constituents of the hydraulic composition, of an organic molecule having a cationic charge density strictly less than 0.5 meq/g and including at least two atoms each being capable of forming at least one hydrogen bond.

Process to inert non-swelling clays

A fast hydraulic binder comprising cement, at least one first superplasticizer, a calcium salt, and at least one second superplasticizer different from the first superplasticizer and comprising a main chain and pendant groups connected to the main chain adapted so as to separate from the main chain in a basic medium, wherein the result is that the second plasticizer has a fluidifying action which increases at least temporarily over time in a basic medium.

Fast hydraulic binder for parts and constructions made of concrete containing a calcium salt

A method includes using copolymers including at least polyoxyalkylenated monomer units and at least phosphorus-comprising monomer units as water-reducing agent in hydraulic binders.

Water-reducing agent for hydraulic binders

A method includes adding at least one copolymer or a salt thereof acting as a plasticizer, blocking agent, or both a plasticizer and a blocking agent, to a calcium sulphate-based hydraulic binder. The copolymer includes an acrylic acid or a poly(oxy)alkylene copolymer.

Admixture for hydraulic binder

The invention mainly relates to the use of a (co)polymer having a main chain essentially consisting of (meth)acrylic units and polyoxyalkylated side-chains containing statistically-distributed hydrophobic units as an adjuvant for lowering the viscosity of hydraulic compositions.

Viscosity-reducing super-plasticising copolymers

A method of using an admixture in hydraulic binders, in particular in plaster-based or anhydrous calcium sulphate-based compounds, the admixture being an acrylic polymer with controlled end chains.

Admixture for a hydraulic binder

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Lyons, France

David Rinaldi