A bitumen product including bitumen and a mineral filler. In order to reduce the specific weight of the bitumen product while allowing sufficient scaling effect, the mineral filler contains expanded perlite grains, the expanded perlite grains having a closed-cell surface, and the expanded perlite grains having a closed-cell surface are not ground.

A bitumen product including bitumen and a mineral filler. In order to reduce the specific weight of the bitumen product while allowing sufficient scaling effect, the mineral filler contains expanded perlite grains, the expanded perlite grains having a closed-cell surface, and the expanded perlite grains having a closed-cell surface are not ground.

Methods for cementing. An example method provides a cement composition comprising an aqueous fluid, a cement, and a cement retarder; wherein the cement retarder is a waste residue from a manufacturing process of a sweetener and comprises a sugar concentration of at least 40%, a Brix value of at least 60, a nitrogen-free extract concentration of at least 50%, a total solids concentration of at least 60%, a crude protein concentration less than 10%, a fat concentration less than 5%, a fiber concentration less than 5%, and an ash concentration less than 10%. The method also introduces the cement composition into a wellbore penetrating a subterranean formation and pumps the cement composition to a location within the wellbore, and allows the cement composition to set in the location.

Methods for cementing. An example method provides a cement composition comprising an aqueous fluid, a cement, and a cement retarder; wherein the cement retarder is a waste residue from a manufacturing process of a sweetener and comprises a sugar concentration of at least 40%, a Brix value of at least 60, a nitrogen-free extract concentration of at least 50%, a total solids concentration of at least 60%, a crude protein concentration less than 10%, a fat concentration less than 5%, a fiber concentration less than 5%, and an ash concentration less than 10%. The method also introduces the cement composition into a wellbore penetrating a subterranean formation and pumps the cement composition to a location within the wellbore, and allows the cement composition to set in the location.

Functionalized microspheres for being dispersed in matrix materials to reduce the density and weight of the materials may be configured to include a covalently bound surface component which is configured to covalently bond with the matrix material so that when combined with the matrix material a strong, light-weight matrix material may be produced.

Functionalized microspheres for being dispersed in matrix materials to reduce the density and weight of the materials may be configured to include a covalently bound surface component which is configured to covalently bond with the matrix material so that when combined with the matrix material a strong, light-weight matrix material may be produced.

A coating composition of: from 4 to 17 wt % of hollow microspheres having a thermal conductivity (designated lambda) below 0.1 W.Math.m.sup.1.Math.K.sup.1, from 0.05 to 1 wt % of at least one linear alcohol whose hydrocarbon chain comprises at least 8 carbon atoms, from 5 to 25 wt % of at least one bonding agent selected from water-dispersible or water-soluble polymers, comprising a glass transition temperature (Tg) less than or equal to 65 C., from 25 to 50 wt % of a non-hydraulic binder that is mineral and metallic fillers: having an average particle size in the range from 5 to 100 m, from 0.1 to 1 wt % of at least one thickener, water, Use thereof and the applications thereof as smoothing and/or heat-insulating coating for walls and ceilings.

A coating composition of: from 4 to 17 wt % of hollow microspheres having a thermal conductivity (designated lambda) below 0.1 W.Math.m.sup.1.Math.K.sup.1, from 0.05 to 1 wt % of at least one linear alcohol whose hydrocarbon chain comprises at least 8 carbon atoms, from 5 to 25 wt % of at least one bonding agent selected from water-dispersible or water-soluble polymers, comprising a glass transition temperature (Tg) less than or equal to 65 C., from 25 to 50 wt % of a non-hydraulic binder that is mineral and metallic fillers: having an average particle size in the range from 5 to 100 m, from 0.1 to 1 wt % of at least one thickener, water, Use thereof and the applications thereof as smoothing and/or heat-insulating coating for walls and ceilings.

Methods and compositions are provided that utilize high-alumina refractory aluminosilicate pozzolans in well cementing. An embodiment discloses a method of cementing comprising: introducing a cement composition into a subterranean formation, wherein the cement composition comprises; a component selected from the group consisting of cement kiln dust, Portland cement and any combination thereof; a high-alumina refractory aluminosilicate pozzolan; and water; and allowing the cement composition to set.

Methods and compositions are provided that utilize high-alumina refractory aluminosilicate pozzolans in well cementing. An embodiment discloses a method of cementing comprising: introducing a cement composition into a subterranean formation, wherein the cement composition comprises; a component selected from the group consisting of cement kiln dust, Portland cement and any combination thereof; a high-alumina refractory aluminosilicate pozzolan; and water; and allowing the cement composition to set.