What is shown and described is a concrete element including a core concrete layer and a face concrete layer, the face concrete layer being obtained by compacting and hardening a mixture containing a latent hydraulic binder and/or a pozzolanic binder, water, a granular material and an alkaline hardener, with the granular material having, at a screen hole width of 2 mm, a through fraction from 35.5 wt. % to 99.5 wt. % and, at a screen hole width of 0.25 mm, a through fraction from 2.5 wt. % to 33.5 wt. %, each based on the total weight of the granular material.

What is shown and described is a concrete element including a core concrete layer and a face concrete layer, the face concrete layer being obtained by compacting and hardening a mixture containing a latent hydraulic binder and/or a pozzolanic binder, water, a granular material and an alkaline hardener, with the granular material having, at a screen hole width of 2 mm, a through fraction from 35.5 wt. % to 99.5 wt. % and, at a screen hole width of 0.25 mm, a through fraction from 2.5 wt. % to 33.5 wt. %, each based on the total weight of the granular material.

Provided are a heat transfer suppression sheet having an excellent heat transfer prevention effect and excellent retainability of inorganic particles and shape retainability at a high temperature, and a battery pack in which the heat transfer suppression sheet is interposed between battery cells. The heat transfer suppression sheet (10) includes inorganic particles (20), first inorganic fibers (30), and second inorganic fibers (31). The first inorganic fibers (30) are amorphous fibers. The second inorganic fibers (31) contain at least one kind selected from amorphous fibers having a glass transition point higher than that of the first inorganic fibers (30) and crystalline fibers.

Provided are a heat transfer suppression sheet having an excellent heat transfer prevention effect and excellent retainability of inorganic particles and shape retainability at a high temperature, and a battery pack in which the heat transfer suppression sheet is interposed between battery cells. The heat transfer suppression sheet (10) includes inorganic particles (20), first inorganic fibers (30), and second inorganic fibers (31). The first inorganic fibers (30) are amorphous fibers. The second inorganic fibers (31) contain at least one kind selected from amorphous fibers having a glass transition point higher than that of the first inorganic fibers (30) and crystalline fibers.

A method for reducing lost circulation in a subterranean formation. The method includes providing a treatment fluid comprising a base fluid and a lost circulation material comprising cane ash. The treatment fluid is introduced into a wellbore within the subterranean formation such that at least a portion of the cane ash bridges openings in the subterranean formation to reduce loss of fluid circulation into the subterranean formation.

A method for reducing lost circulation in a subterranean formation. The method includes providing a treatment fluid comprising a base fluid and a lost circulation material comprising cane ash. The treatment fluid is introduced into a wellbore within the subterranean formation such that at least a portion of the cane ash bridges openings in the subterranean formation to reduce loss of fluid circulation into the subterranean formation.

Provided is an inorganic structure including a plurality of inorganic particles; and a binding part that covers a surface of each of the inorganic particles and binds the inorganic particles together, wherein the binding part contains: an amorphous compound containing silicon, oxygen, and one or more metallic elements; and fine particles having an average particle size of 100 nm or less. Also provided is a method for producing an inorganic structure including: a step for obtaining a mixture by mixing a plurality of inorganic particles, a plurality of amorphous silicon dioxide particles, and an aqueous solution containing a metallic element; and a step for pressurizing and heating the mixture under conditions of a pressure of 10 to 600 MPa and a temperature of 50 to 300° C.

Provided is an inorganic structure including a plurality of inorganic particles; and a binding part that covers a surface of each of the inorganic particles and binds the inorganic particles together, wherein the binding part contains: an amorphous compound containing silicon, oxygen, and one or more metallic elements; and fine particles having an average particle size of 100 nm or less. Also provided is a method for producing an inorganic structure including: a step for obtaining a mixture by mixing a plurality of inorganic particles, a plurality of amorphous silicon dioxide particles, and an aqueous solution containing a metallic element; and a step for pressurizing and heating the mixture under conditions of a pressure of 10 to 600 MPa and a temperature of 50 to 300° C.

A lime-based cement extender composition, and associated systems and methods are disclosed herein. In some embodiments, the lime-based cement extender composition includes 5-20% by weight lime particles, 40-50% by weight limestone particles, and 40-50% by weight pozzolan particles. Additionally or alternatively, the lime-based cement extender composition can comprise a calcium oxide concentration of 45-65%, a magnesium oxide concentration of 0.5-2%, an iron oxide concentration of 0.5-2.0%, an aluminum oxide concentration of 2-8%, a silicon dioxide concentration of 20-40%, a potassium oxide concentration of 20,000-30,000 ppm, and a sodium oxide concentration of 10,000-20,000 ppm. In some embodiments, the lime-based cement extender composition, or product, is combined with cement to produce a cement blend for use in the mining industry as mine backfill.

A lime-based cement extender composition, and associated systems and methods are disclosed herein. In some embodiments, the lime-based cement extender composition includes 5-20% by weight lime particles, 40-50% by weight limestone particles, and 40-50% by weight pozzolan particles. Additionally or alternatively, the lime-based cement extender composition can comprise a calcium oxide concentration of 45-65%, a magnesium oxide concentration of 0.5-2%, an iron oxide concentration of 0.5-2.0%, an aluminum oxide concentration of 2-8%, a silicon dioxide concentration of 20-40%, a potassium oxide concentration of 20,000-30,000 ppm, and a sodium oxide concentration of 10,000-20,000 ppm. In some embodiments, the lime-based cement extender composition, or product, is combined with cement to produce a cement blend for use in the mining industry as mine backfill.