Lafarge

Isabelle Sgro

Serge Sabio

Bruno Pellerin

David Rinaldi

Horacio Naranjo

Pascal Boustingorry

Jean-Michel Laye

Constantinos Xenopoulos

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 adding in a concrete composition at least one cellulose ether having either, a degree of substitution of methoxy radicals (DSM); or a degree of substitution (DS) comprised from 1.17 to 2.33 to reduce plastic shrinkage and/or reduce plastic cracking in concrete.

Use of at least one cellulose ether to reduce plastic shrinkage and/or cracking in concrete

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Villefontaine, France

Isabelle Sgro