A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LIGHTWEIGHT GYPSUM PRODUCTS HAVING ENHANCED WATER RESISTANCE
The product is produced from a settable aqueous calcium sulphate dispersion which has a water to solids ratio of less than 0.4 to 1, and has distributed therethrough lightweight hollow bodies having water-impervious surfaces (such as expanded polystyrene beads). The dispersion contains a hydratable cement (such as calcium sulpho aluminate) which is capable of hydration in the presence of the calcium sulphate dispersion. The hydratable cement is such that it reacts with excess water in the dispersion thereby enhancing the water resistance of the resulting product.
L'invention concerne un produit obtenu à partir d'une dispersion de sulfate de calcium aqueuse durcissable présentant un rapport eau-matières solides inférieur à 0,4-1 et contenant des corps creux légers répartis dans la solution qui comportent des surfaces imperméables à l'eau (telles que des billes de polystyrène expansé). La dispersion contient un ciment hydratable (tel que le sulfoaluminate de calcium) pouvant être hydraté en présence de la dispersion de sulfate de calcium. Ce ciment hydratable réagit avec l'eau excédentaire de la dispersion, ce qui améliore la résistance à l'eau du produit résultant.
LIGHTWEIGHT GYPSUM PRODUCTS HAVING ENHANCED WATER RESISTANCE
The product is produced from a settable aqueous calcium sulphate dispersion which has a water to solids ratio of less than 0.4 to 1, and has distributed therethrough lightweight hollow bodies having water-impervious surfaces (such as expanded polystyrene beads). The dispersion contains a hydratable cement (such as calcium sulpho aluminate) which is capable of hydration in the presence of the calcium sulphate dispersion. The hydratable cement is such that it reacts with excess water in the dispersion thereby enhancing the water resistance of the resulting product.
L'invention concerne un produit obtenu à partir d'une dispersion de sulfate de calcium aqueuse durcissable présentant un rapport eau-matières solides inférieur à 0,4-1 et contenant des corps creux légers répartis dans la solution qui comportent des surfaces imperméables à l'eau (telles que des billes de polystyrène expansé). La dispersion contient un ciment hydratable (tel que le sulfoaluminate de calcium) pouvant être hydraté en présence de la dispersion de sulfate de calcium. Ce ciment hydratable réagit avec l'eau excédentaire de la dispersion, ce qui améliore la résistance à l'eau du produit résultant.
LIGHTWEIGHT GYPSUM PRODUCTS HAVING ENHANCED WATER RESISTANCE
PRODUITS EN PLATRE LEGER PRESENTANT UNE RESISTANCE A L'EAU AMELIOREE
FISHER ROBIN DANIEL (author)
2017-08-22
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
Lightweight gypsum products having enhanced water resistance
| European Patent Office | 2023
Lightweight gypsum products having enhanced water resistance
| European Patent Office | 2018
Lightweight Gypsum Products Having Enhanced Water Resistance
| European Patent Office | 2019
LIGHTWEIGHT GYPSUM PRODUCTS HAVING ENHANCED WATER RESISTANCE
| European Patent Office | 2017