There is provided a method of manufacturing a concrete product. A composition including a slag-based binder, an aggregate, water and an additive selected from the group consisting of calcium chloride, ground eggshells, sodium carbonate, sodium bicarbonate, sodium hydroxide, fine calcium carbonate, calcium oxide, borax, ammonium chloride and combinations thereof, is mixed to obtain a concrete mixture. The concrete mixture is formed into a desired shape to obtain a formed concrete, the formed concrete having a first water-to-binder ratio. The formed concrete is dried to obtain a dried concrete having a second water-to-binder ratio less than the first water-to-binder ratio. The concrete mixture is carbon cured to obtain the concrete product.

The present invention relates to a novel multifunctional material for workability of geopolymeric system and its process thereof. The viscous characteristics in geopolymeric system are responsible for observed negligible workability of geopolymeric cement concrete system and which limits its broad application spectrum. The novel multifunctional material of the present invention prepared by digestion of siliceous agricultural waste i.e. Rice husk with aqueous alkaline materials involving simultaneous and synergistic chemical reactions among the various constituents of rice husk, aqueous alkaline compounds and optionally adding Cetyl trimethyl ammonium bromide (CTAB) to obtain in-situ synthesis of desired nano-sized multi functional agents lignin, hemicelluloses, cellulose, sodium silicate necessary for addressing the issue of workability and also improving the engineering properties of geopolymeric system for broad application spectrum.

A clinker for use in cement manufacturing includes a cement clinker mixture having crystals of an element that is less electronegative than carbon and carbon bonded to at least a portion of the crystals.

A clinker for use in cement manufacturing includes a cement clinker mixture having crystals of an element that is less electronegative than carbon and carbon bonded to at least a portion of the crystals.

Methods and systems for plug-and-abandon applications are included. A method comprises providing an extended-life cement composition comprising calcium aluminate cement, water, and a cement set retarder. The method further comprises mixing the extended-life cement composition with a cement set activator to activate the extended-life cement composition, introducing the activated extended-life cement composition into a wellbore, and allowing the activated extended-life cement composition to set in the wellbore to form a plug in the wellbore. The plug has a permeability of less than 0.1 millidarcy.

A process for the manufacturing of a slurry containing nucleating agents which comprises reacting at least one source of a Ca containing compound with at least one source of a Si containing compound, in an aqueous media and in the presence of a doping agent selected from the group consisting of P, B, S, and mixtures thereof; wherein: (i) the reaction is carried out at a temperature comprised from 100 to 350? C.; (ii) the total molar ratio Ca/Si is 1.5-2.5, and (iii) the total molar ratio doping agent/Si is 0.01-2; provided that: (a) when the sole doping agent is P, the total molar ratio P/Si is 0.1-2; (b) when the sole doping agent is B, the total molar ratio B/Si is 0.01-2, and (c) when the sole doping agent is S, the total molar ratio S/Si is 0.1-2.

It discloses cement grinding aids prepared with waste antifreeze which comprises the following components in parts by weight: 20-75 parts of pretreated waste antifreeze, 5-40 parts of alkanolamine, 1-5 parts of acid solution, 3-12 parts of saccharide and 15-50 parts of water. The pretreated waste antifreeze is prepared by adding an alkaline solution into waste antifreeze to regulate the pH value, adding a flocculant, and stirring and standing; separating upper-layer oil, and then filtering to remove flocculent precipitates, thus obtaining a clear mixed solution.

An expansive additive composition for use in Portland cements and a method of using such an additive composition is provided. The additive composition can include a calcium aluminate cement additive and a lithium compound. The additive composition is capable of producing expansion in set cements when the temperature is at or below room temperature and minimizes the amount of calcium aluminate cement additive needed.

Provided herein are cementitious compositions comprising a non-aqueous fluid and an alkali-activated material. The non-aqueous fluid can include a natural oil, a synthetically derived oil, one or more surfactants, or a combination thereof. In some embodiments, the non-aqueous fluid can include an oil based mud, a synthetic based mud, or a mixture thereof. The alkali-activated material in the cementitious composition can be derived from an aluminosilicate material and an alkaline activator. In some embodiments, the aluminosilicate material includes fly ash. The alkaline activator can be selected from an alkali-hydroxide, an alkali-silicate, an alkali carbonate, an alkali bicarbonate, an alkali sulfate, and a mixture thereof. Provided herein are also wellbore servicing composition, such as compositions to reduce lost circulation of drilling fluids or cement a casing into the borehole, comprising the cementitious compositions and methods for preparing and using the cementitious compositions.

Provided herein are cementitious compositions comprising a non-aqueous fluid and an alkali-activated material. The non-aqueous fluid can include a natural oil, a synthetically derived oil, one or more surfactants, or a combination thereof. In some embodiments, the non-aqueous fluid can include an oil based mud, a synthetic based mud, or a mixture thereof. The alkali-activated material in the cementitious composition can be derived from an aluminosilicate material and an alkaline activator. In some embodiments, the aluminosilicate material includes fly ash. The alkaline activator can be selected from an alkali-hydroxide, an alkali-silicate, an alkali carbonate, an alkali bicarbonate, an alkali sulfate, and a mixture thereof. Provided herein are also wellbore servicing composition, such as compositions to reduce lost circulation of drilling fluids or cement a casing into the borehole, comprising the cementitious compositions and methods for preparing and using the cementitious compositions.