| abstract |
Use of a mineral foam for the production of thermally insulated prefabricated walls The invention relates to the use of a mineral foam having a dry density ranging from 100 to 300 kg/m3 obtained by contacting an aqueous foam with a cement slurry, said cement slurry comprising water (W), a binder (B) and a water-reducing admixture, the binder (B) comprises Portland cement and less than 0.5 % of calcium aluminate cement, % expressed by mass relative to the mass of binder, wherein the weight water/binder (W/B) ratio of the cement slurry is reduced to a value below 0.44 but above 0.29 in order to improve adhesion of the mineral foam to a flat surface of a concrete slab (2) and allow the production of a prefabricated layered wall (1, 11, 12) comprising at least one connecting element (5, 51) and a layer (3) of said mineral foam in contact with at least one concrete slab (2) by putting in contact the mineral foam with a flat surface of said concrete slab (2). |