Method for the continuous production of a low-density mineral foam
AssigneeHolcim Technology Ltd
InventorsFreddy Bernard, Pierre-Henri Jezequel, Sandrine Reboussin
Life of this patent
Estimating the term…
Abstract
A method for the continuous production of a mineral foam of which the density in the dry state (d) is from 40 to 600 kg/m3, includes (i) mixing cement; a water reducing agent; 0.5 to 10%, % by weight with respect to the total weight of cement, of ultrafine particles having a liquid-solid contact angle comprised from 30° to 140°, and of which the D50 is from 10 to 600 nm; water, with a water/cement weight ratio from 0.3 to 2.5; (ii) adding to the mixture from 0.5 to 10% of a pore-forming agent, % by weight with respect to the weight of cement; (iii) applying the mixture obtained at step (ii) on a support; (iv) leaving the mixture to expand on the support.
Claims18
A method for the continuous production of a mineral foam of which the density in the dry state (d) is comprised from 40 to 600 kg/m3, comprising the following steps:
- (i) mixing
- cement;
- a water reducing agent;
- 0.5 to 10%, % by weight with respect to the total weight of cement, of ultrafine particles having a liquid-solid contact angle comprised from 30° to 140°, and of which the D50 is comprised from 10 to 600 nm;
- water, with a water/cement weight ratio comprised from 0.3 to 2.5;
- (ii) adding to the mixture from 0.5 to 10% of a pore-forming agent, % by weight with respect to the weight of cement;
- (iii) applying the mixture obtained at step (ii) on a support;
- (iv) leaving the mixture to expand on the support.
Dependencies are inferred from the claim text.