A method of cementing may include: providing a first solid particulate material; measuring at least one physicochemical property of the first solid particulate material; correlating the at least one physicochemical property of the first solid particulate material to at least one physicochemical property of a second solid particulate material and at least one physicochemical of a third solid particulate material; determining if a result of the step of correlating meets an operational parameter; and preparing a cement slurry which meets the operational parameter.

The present invention relates to a composition in the form of a mixture comprising F-type fly ash, a reactive silicon source, a setting accelerator and a light aggregate with a density of less than 900 kg/m.sup.3 and a mechanical strength of at least 0.08 MPa, and the uses thereof to obtain light and fireproof construction materials.

The present invention relates to a composition in the form of a mixture comprising F-type fly ash, a reactive silicon source, a setting accelerator and a light aggregate with a density of less than 900 kg/m.sup.3 and a mechanical strength of at least 0.08 MPa, and the uses thereof to obtain light and fireproof construction materials.

The invention provides a particulate composition adapted for forming a bone graft substitute cement upon mixing with an aqueous solution, comprising i) a calcium sulfate hemihydrate powder, wherein the calcium sulfate hemihydrate is present at a concentration of at least about 50 weight percent based on the total weight of the particulate composition; ii) a monocalcium phosphate monohydrate powder; iii) a non-porous β-tricalcium phosphate powder; and iv) a porous β-tricalcium phosphate powder. Bone graft substitute cements made therefrom, a bone graft substitute kit comprising the particulate composition, methods of making and using the particulate composition, and articles made from the bone graft substitute cement are also provided.

The invention provides a particulate composition adapted for forming a bone graft substitute cement upon mixing with an aqueous solution, comprising i) a calcium sulfate hemihydrate powder, wherein the calcium sulfate hemihydrate is present at a concentration of at least about 50 weight percent based on the total weight of the particulate composition; ii) a monocalcium phosphate monohydrate powder; iii) a non-porous β-tricalcium phosphate powder; and iv) a porous β-tricalcium phosphate powder. Bone graft substitute cements made therefrom, a bone graft substitute kit comprising the particulate composition, methods of making and using the particulate composition, and articles made from the bone graft substitute cement are also provided.

Lithium-containing cement admixtures including a calcium aluminate phosphate cement; a lithium-ion-containing compound; and an aqueous base fluid and methods of introducing the lithium-containing cement admixtures into a subterranean formation. The lithium-containing cement admixtures may further comprise an aluminosilicate or an additive including a set retarder, a set accelerator, a suspension aid, a density reducing agent, a fluid loss control agent, a defoamer, and any combination thereof.

Lithium-containing cement admixtures including a calcium aluminate phosphate cement; a lithium-ion-containing compound; and an aqueous base fluid and methods of introducing the lithium-containing cement admixtures into a subterranean formation. The lithium-containing cement admixtures may further comprise an aluminosilicate or an additive including a set retarder, a set accelerator, a suspension aid, a density reducing agent, a fluid loss control agent, a defoamer, and any combination thereof.

A variety of systems, methods and compositions are disclosed for cementing in subterranean formations. Embodiments may include the use of slag co-grind in well cementing operations.

A variety of systems, methods and compositions are disclosed for cementing in subterranean formations. Embodiments may include the use of slag co-grind in well cementing operations.

A geopolymer cement and a method of producing the same are provided. A geopolymer cement binder may be provided including a geopolymer precursor and magnesium oxide as an alkali activator. The geopolymer cement binder may be mixed with water using high shear mixing.