Aggregates useful in building materials such as concrete are described. The aggregates may include fly ash and an inorganic polymer binder, which may be present as an outer layer on a core of fly ash. Methods of preparing the aggregates and concrete mixtures comprising the aggregates are also described. For example, the aggregates may be prepared by contacting fly ash agglomerates with an alkaline solution. The concrete mixtures may comprise the aggregates and a hydraulic cement.

The invention relates to a method for producing thermal energy storage components comprising phase change material embedded into porous components, in particular for use in cement-based compositions. The method comprises: an impregnation step (10) comprising introducing phase change material into porous components inside a main vessel (102) by vacuum impregnation; an injection step (12) at a temperature within a melting temperature range of said phase change material and under an overpressure, in order vacuuming to force the phase change material into the porous components; and an entrapment step (14) comprising reducing the temperature inside the main vessel, while maintaining an the overpressure, in order to lower the viscosity of said phase change material.

The invention relates to a method for producing thermal energy storage components comprising phase change material embedded into porous components, in particular for use in cement-based compositions. The method comprises: an impregnation step (10) comprising introducing phase change material into porous components inside a main vessel (102) by vacuum impregnation; an injection step (12) at a temperature within a melting temperature range of said phase change material and under an overpressure, in order vacuuming to force the phase change material into the porous components; and an entrapment step (14) comprising reducing the temperature inside the main vessel, while maintaining an the overpressure, in order to lower the viscosity of said phase change material.

This application relates to making magnesium oxychloride boards. A magnesium oxychloride slurry is mixed by directing magnesium chloride, magnesium oxide, at least one phosphate, at least one inorganic salt, and water into a mixer and mixing these ingredients together to form a slurry. At least one filler is then mixed with the slurry. The slurry is directed to a mold. The mold is formed with the slurry to form a magnesium oxychloride board. The magnesium oxychloride board is then cured.

This application relates to making magnesium oxychloride boards. A magnesium oxychloride slurry is mixed by directing magnesium chloride, magnesium oxide, at least one phosphate, at least one inorganic salt, and water into a mixer and mixing these ingredients together to form a slurry. At least one filler is then mixed with the slurry. The slurry is directed to a mold. The mold is formed with the slurry to form a magnesium oxychloride board. The magnesium oxychloride board is then cured.

A method of treating a subterranean formation comprising: providing a proppant; coating the proppant with a geopolymer composition to create a coated proppant; injecting a fracturing fluid into the subterranean formation, wherein the fracturing fluid comprises a base fluid and the coated proppant; and allowing the geopolymer composition to set in the formation to form a geopolymer on the proppant.

A method of treating a subterranean formation comprising: providing a proppant; coating the proppant with a geopolymer composition to create a coated proppant; injecting a fracturing fluid into the subterranean formation, wherein the fracturing fluid comprises a base fluid and the coated proppant; and allowing the geopolymer composition to set in the formation to form a geopolymer on the proppant.

This application relates to making magnesium oxychloride boards. A magnesium oxychloride slurry is mixed by directing magnesium chloride, magnesium oxide, at least one phosphate, at least one inorganic salt, and water into a mixer and mixing these ingredients together to form a slurry. At least one filler is then mixed with the slurry. The slurry is directed to a mold. The mold is formed with the slurry to form a magnesium oxychloride board. The magnesium oxychloride board is then cured.

This application relates to making magnesium oxychloride boards. A magnesium oxychloride slurry is mixed by directing magnesium chloride, magnesium oxide, at least one phosphate, at least one inorganic salt, and water into a mixer and mixing these ingredients together to form a slurry. At least one filler is then mixed with the slurry. The slurry is directed to a mold. The mold is formed with the slurry to form a magnesium oxychloride board. The magnesium oxychloride board is then cured.

This application relates to making magnesium oxychloride boards. A magnesium oxychloride slurry is mixed by directing magnesium chloride, magnesium oxide, at least one phosphate, at least one inorganic salt, and water into a mixer and mixing these ingredients together to form a slurry. At least one filler is then mixed with the slurry. The slurry is directed to a mold. The mold is formed with the slurry to form a magnesium oxychloride board. The magnesium oxychloride board is then cured.