A method of cementing a subterranean formation includes forming a cement composition comprising cementitious material, an aqueous base fluid, a nano-reinforcement particle suspension comprising a surfactant; and pozzolanic material; introducing the cement composition into a subterranean formation; and allowing the cement composition to set in the subterranean formation. A method of making a cement composition includes combining cementitious material, an aqueous base fluid, a nano-reinforcement particle suspension comprising a surfactant, and a pozzolanic material, where the rate of hydration of the surfaces of the cementitious material is less retarded by the surfactant than an equivalent cement composition without pozzolanic material.

Disclosed is a method and system for producing a hydraulic binder by processing of a silicate-containing component with at least one of calcium silicate hydrate- or belite-containing components. The method includes comminuting the silicate-containing component to a particle sizes of <100 m, with at least partial breaking of SiOSi bonds and/or hydrogen bonds in the structure of the surface layer of the silicate-containing component, for surface activation. The method further includes contacting the comminuted silicate-containing component with calcium silicate hydrate- and/or belite-containing components to cause the calcium silicate hydrate- and/or belite-containing components to accumulate on at least 50% of the surface area of the silicate-containing carrier substance.

Disclosed is a method and system for producing a hydraulic binder by processing of a silicate-containing component with at least one of calcium silicate hydrate- or belite-containing components. The method includes comminuting the silicate-containing component to a particle sizes of <100 m, with at least partial breaking of SiOSi bonds and/or hydrogen bonds in the structure of the surface layer of the silicate-containing component, for surface activation. The method further includes contacting the comminuted silicate-containing component with calcium silicate hydrate- and/or belite-containing components to cause the calcium silicate hydrate- and/or belite-containing components to accumulate on at least 50% of the surface area of the silicate-containing carrier substance.

The present invention relates to a mortar composition for interior plaster or coating comprising at least one binder, at least aggregates, sands and/or fillers and at least one additive, characterized in that at least one additive is an agent in powder form capable of scavenging aldehydes and is selected from aminoalcohols.

The present invention relates to a mortar composition for interior plaster or coating comprising at least one binder, at least aggregates, sands and/or fillers and at least one additive, characterized in that at least one additive is an agent in powder form capable of scavenging aldehydes and is selected from aminoalcohols.

Methods and systems directed to controlling the rheology of settable compositions in subterranean formations. Embodiments include a method of controlling the rheology of a set-delayed cement composition, the method comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; shearing the set-delayed cement composition in an amount sufficient to substantially prevent solids settling; storing the set-delayed cement in a pumpable fluid state for at least 1 day; activating the set-delayed cement composition; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. Additional methods and systems are also provided.

Methods and systems directed to controlling the rheology of settable compositions in subterranean formations. Embodiments include a method of controlling the rheology of a set-delayed cement composition, the method comprising: providing a set-delayed cement composition comprising water, pumice, hydrated lime, and a set retarder; shearing the set-delayed cement composition in an amount sufficient to substantially prevent solids settling; storing the set-delayed cement in a pumpable fluid state for at least 1 day; activating the set-delayed cement composition; introducing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation. Additional methods and systems are also provided.

A ready-mixed composition and a pre-mix composition for the production of a concrete material containing sequestered carbon dioxide, a CO.sub.2-containing water used in such compositions, dry-batch and wet-batch processes for sequestering carbon dioxide in concrete material, general method and process for sequestering carbon dioxide in hardening concrete, system and ready-mixed truck to perform such processes and methods for the production of a ready-to-cure carbonated concrete. Compositions comprise a concrete mixture and a CO.sub.2-containing water. The CO.sub.2-containing water comprising water and at least one of blended CO.sub.2 gas bubbles, dissolved H.sub.2CO.sub.3, carbonate ions (CO.sub.3.sup.2), bicarbonate ions (HCO.sup.3), nanosized alkaline earth metal carbonate and nanosized alkali metal carbonate particles. The concrete mixture comprises a cementitious material, aggregates and at least one CO.sub.2-sequestering chemical for accelerating a CO.sub.2 sequestration speed and maximizing the captured amount of the carbon dioxide.

A ready-mixed composition and a pre-mix composition for the production of a concrete material containing sequestered carbon dioxide, a CO.sub.2-containing water used in such compositions, dry-batch and wet-batch processes for sequestering carbon dioxide in concrete material, general method and process for sequestering carbon dioxide in hardening concrete, system and ready-mixed truck to perform such processes and methods for the production of a ready-to-cure carbonated concrete. Compositions comprise a concrete mixture and a CO.sub.2-containing water. The CO.sub.2-containing water comprising water and at least one of blended CO.sub.2 gas bubbles, dissolved H.sub.2CO.sub.3, carbonate ions (CO.sub.3.sup.2), bicarbonate ions (HCO.sup.3), nanosized alkaline earth metal carbonate and nanosized alkali metal carbonate particles. The concrete mixture comprises a cementitious material, aggregates and at least one CO.sub.2-sequestering chemical for accelerating a CO.sub.2 sequestration speed and maximizing the captured amount of the carbon dioxide.

The present invention is directed to a pozzolanic mixture used as a supplementary cementitious material (SCM) comprising an activated clay, a limestone and a setting regulator. Moreover, it is also directed to a cementitious composition comprising said pozzolanic mixture, a clinker and a setting regulator. Finally, the invention is also directed to a concrete comprising the cementitious composition described above, fine aggregate, coarse aggregate and water, optionally the concrete may have other additives.