Ciments Francais

Andre Roux

Bruno Le Rolland

Sylvia Vespasien

The self-leveling fluid screed cement composition with limited shrinkage, formed by a mixture of a cement binder, a fluidizing adjuvant, granulates and water, is characterized in that the binder includes 70% to 85% by weight of Portland cement, 7% to 18% by weight of sulfo-aluminous clinker, and 6% to 14% by weight of calcium sulfate, with a calcium sulfate C$/calcium sulfo-aluminate CA$ molar ratio of between 5 and 7 and a water/binder ratio by weight of between 0.60 and 0.90. The self-leveling fluid screed that is thus produced has a mechanical resistance to its compression at 24 hours that is at least equal to 1 MPa, shrinkage at 7 days, measured under a relative hygrometry of 50%, less than 500 &#x3bc;m/m, and an endogenic expansion value that is measured at 7 days, less than 1,000 &#x3bc;m/m, as well as a very slight lifting of edges.

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Mantes la Jolie, France

Andre Roux