A Cemetitious Product

Patent metadata

Field	Value
Publication number	US-2025019305-A1
Application number	US-202218713079-A
Country	US
Kind code	A1
Filing date	Dec 21, 2022
Priority date	Dec 23, 2021
Publication date	Jan 16, 2025
Grant date	—

Abstract

There is provided a cementitious product comprising cementitious material, the cementitious product further comprising stone wool objects, said stone wool objects comprising stone wool fibres, wherein a portion of the stone wool fibres have a longest dimension greater than 250 μm. In this way, there is provided a cementitious product with improved fire performance.

First claim

1 - 15 . (canceled)

16 . A cementitious product, said cementitious product comprising cementitious material, said cementitious product further comprising stone wool objects, said stone wool objects comprising stone wool fibres, wherein a portion of said stone wool fibres have a longest dimension greater than 250 μm.

17 . The cementitious product of claim 16 , wherein said cementitious material comprises at least one of calcium sulphate hemihydrate and calcium sulphate dihydrate.

18 . The cementitious product of claim 17 , wherein said cementitious product is a powder, and said cementitious material comprises calcium sulphate hemihydrate.

19 . The cementitious product of claim 17 , wherein said cementitious product is a plaster or a plasterboard, and said cementitious material comprises calcium sulphate dihydrate.

20 . The cementitious product of claim 16 , wherein said stone wool objects comprise at least one of silicon dioxide, aluminium oxide and magnesium oxide.

21 . The cementitious product of claim 20 , wherein said stone wool objects comprise silicon dioxide and aluminium oxide, wherein said stone wool objects comprise more silicon dioxide than aluminium oxide by weight.

22 . The cementitious product of claim 16 , wherein said stone wool objects are present in an amount of at least 4 wt. % relative to the cementitious material.

23 . The cementitious product of claim 16 , wherein said stone wool objects are present in an amount of at least 10 wt. % relative to the cementitious material.

24 . The cementitious product of claim 16 , wherein said cementitious product is free of vermiculite.

25 . The cementitious product of claim 16 , wherein at least 0.8% by number of said stone wool fibres have a longest dimension greater than 250 μm.

26 . The cementitious product of claim 16 , wherein at least 2% by number of said stone wool fibres have a longest dimension greater than 250 μm.

27 . The cementitious product of claim 16 , wherein at least 30% by number of said stone wool objects are spherical particles.

28 . The cementitious product of claim 16 , wherein at least 40% by number of said stone wool objects are spherical particles.

29 . The cementitious product of claim 16 , wherein at least 5% by number of said stone wool objects are fibres,

30 . The cementitious product of claim 16 , wherein at least 20% by number of said stone wool objects are fibres.

31 . The cementitious product of claim 16 , wherein at least 5% by number of said stone wool objects are crossed fibres.

32 . The cementitious product of claim 16 , wherein at least 15% by number of said stone wool objects are crossed fibres.

33 . The cementitious product of claim 16 , wherein at least 5% by number of said stone wool objects are non-spherical particles,

34 . The cementitious product of claim 16 , wherein at least 15% by number of said stone wool objects are non-spherical particles.

35 . The cementitious product of claim 16 , wherein the stone wool fibres have a mean fibre diameter of 6 μm or greater.

Assignees

• Saint Gobain Placo

Inventors

• Nieto Bartolome Pablo
• Dominguez Martinez Alejandro
• Pardo Cobo Fernando

Classifications

• C04B2111/10

  Compositions or ingredients thereof characterised by the absence or the very low content of a specific material · CPC title

• C04B28/14

  containing calcium sulfate cements {(gypsum-paper plates E04C)} · CPC title

• C04B20/0008

  Materials specified by a shape not covered by C04B20/0016 - C04B20/0056, e.g. nanotubes · CPC title

• C04B11/26

  {strating from chemical gypsum}; starting from phosphogypsum or from waste, e.g. purification products of smoke (C04B11/02 takes precedence; chemical purification of smoke, fumes or exhaust gases B01D53/00 {purification of gypsum C01F11/46}) · CPC title

• C04B2111/00612

  as one or more layers of a layered structure · CPC title