In the field of decorative floor coverings, decorative panels are known having a MDF (Medium Density Board) or HDF (High Density Board) based core layer on top of which a decorative substrate is attached to provide the panels a desired appearance. The invention relates to a panel, in particular a decorative panel, a floor panel, a ceiling panel or a wall panel. The invention also relates to a floor covering consisting of a plurality of mutually coupled panels.

A cement composition can include water; cement, wherein less than 75 w/w % of the total amount of the cement is Portland cement; and a fluid loss additive, wherein the fluid loss additive comprises a polymer network having at least one branching point formed with a monomer and a cross-linking agent that comprises at least three active functional groups. The cement can also be a non-Portland cement. The monomer can be a vinyl ester-based monomer that is polymerized with the cross-linking agent to form the polymer network. The cement composition can be used in an oil and gas operation.

In the field of decorative floor coverings, decorative panels are known having a MDF (Medium Density Board) or HDF (High Density Board) based core layer on top of which a decorative substrate is attached to provide the panels a desired appearance. The invention relates to a panel, in particular a decorative panel, a floor panel, a ceiling panel or a wall panel. The invention also relates to a floor covering consisting of a plurality of mutually coupled panels.

In the field of decorative floor coverings, decorative panels are known having a MDF (Medium Density Board) or HDF (High Density Board) based core layer on top of which a decorative substrate is attached to provide the panels a desired appearance. The invention relates to a panel, in particular a decorative panel, a floor panel, a ceiling panel or a wall panel. The invention also relates to a floor covering consisting of a plurality of mutually coupled panels.

In the field of decorative floor coverings, decorative panels are known having a MDF (Medium Density Board) or HDF (High Density Board) based core layer on top of which a decorative substrate is attached to provide the panels a desired appearance. The invention relates to a panel, in particular a decorative panel, a floor panel, a ceiling panel or a wall panel. The invention also relates to a floor covering consisting of a plurality of mutually coupled panels.

An insulation material formed of a composition, and a method of making an insulation material is provided. The composition forming the insulation material includes magnesium oxide; at least one of magnesium chloride, magnesium sulfate, and hydrates thereof; water; a foaming agent; a thickener; and a foam stabilizer. The composition is foamed to promote aeration of the composition to reduce density of the insulation material formed from the composition.

An insulation material formed of a composition, and a method of making an insulation material is provided. The composition forming the insulation material includes magnesium oxide; at least one of magnesium chloride, magnesium sulfate, and hydrates thereof; water; a foaming agent; a thickener; and a foam stabilizer. The composition is foamed to promote aeration of the composition to reduce density of the insulation material formed from the composition.

Disclosed is a magnesium-based cementitious material, preparation method and application thereof. The magnesium-based cementitious material, comprising magnesite, sandstone, and water, wherein: the magnesite is provided with CaO, SiO.sub.2, Al.sub.2O.sub.3, Fe.sub.2 O.sub.3, and MgO, a mass percentage of the CaO is less than 5%, a mass percentage of SiO.sub.2 is less than 5%, a mass percentage of Al.sub.2 O.sub.3 is less than 5%, a mass percentage of Fe.sub.2 O.sub.3 is less than 7%, a mass percentage of MgO is between 37% and 50%; the sandstone is provided with SiO.sub.2, CaO, Al.sub.2 O.sub.3, and Fe.sub.2O.sub.3, a mass percentage of SiO.sub.2 is greater than 70%. The beneficial effects of this disclosure are: the cementitious material does not contain MgCl.sub.2, which avoids the reduction of the strength of the cementitious material due to the dissolution of MgCl.sub.2 in water; the magnesium-based cementitious material of this disclosure is immiscible with water and has strong water resistance.

Embodiments of the present invention encompass methods of improving flow of dry materials. Embodiments of the present invention also encompass compositions with improved flow. Embodiments of the present invention also encompass methods of using the compositions with improved flow.

Embodiments of the present invention encompass methods of improving flow of dry materials. Embodiments of the present invention also encompass compositions with improved flow. Embodiments of the present invention also encompass methods of using the compositions with improved flow.