Foamed concrete
AssigneeLafarge
InventorsPierre-Henri Jezequel, Benoit Mathonier
Life of this patent
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Abstract
A foamed concrete having a density from 100 to 800 kg/m3 including by mass relative to the total mass of the concrete: a cement; water; from 0.01 to 5% of a water-reducing agent, plasticizer or superplasticizer; from 0.45 to 5% of a foaming agent relative to the amount of water; from 0.01 to 5% of a water-soluble calcium salt; inorganic particles from 0.1 to 300 μm in size; the ratio of foaming agent to calcium salt being from 0.3 to 0.8; excluding foamed concretes including 10% or more by mass of slag.
Claims16
A foamed concrete having a density from 200 to 800 kg/m3 comprising:
- a cement;
- water;
- from 0.01 to 5% by mass of a water-reducing agent, plasticizer or superplasticizer relative to the total mass of the concrete;
- from 0.45 to 5% by mass of a foaming agent relative to the mass of water;
- a water-soluble calcium salt which is an accelerator and has a solubility in water at 20° C. greater than 2 g/100 ml;
- inorganic particles from 0.1 to 300 μm in size;
- a ratio of foaming agent to calcium salt being from 0.3 to 0.8 by mass;
- excluding foamed concrete comprising 10% or more by mass of slag particles relative to the total mass of the concrete.
A product comprising a foaming agent and a water-soluble calcium salt having a solubility in water at 20° C. greater than 2 g/100 ml in a mass ratio of 0.3 to 0.8 for simultaneous, separate or sequential use for reducing the viscosity of an aqueous medium.
Dependencies are inferred from the claim text.