A grout used in horizontal directional drilling including a silica material present in an amount of from about 50% to about 70%, bentonite present in an amount of from about 20% to about 30%, a carbon source present in an amount of from about 5% to about 15%, an inorganic alkaline material present in an amount of from about 0% to about 3%, a fluid loss additive present in an amount of from about 0% to about 1%, a polymeric dispersant present in an amount of from about 0% to about 1%, and a polymeric flow enhancer present in an amount of from about 0% to about 0.5%, all by weight of the grout composition. Methods utilizing the grout include placing conduit in a hole, forming the grout slurry, and placing the grout slurry adjacent to the conduct.

A method of preparing a unique foundry premix composition that has a low bulk density of 30-45 lbs/ft.sup.3 and contains fine particles with an average particle size of 85-100 μm is described. The unique foundry premix composition is produced by using specially designed assemblies of mechanical equipment with improved efficiency so that the premix can be prepared at a site closer to a foundry. As a result, increase in premix density caused by handling and shipping across a long distance from a traditional premix manufacturing facility to a foundry can be suppressed; transportation cost can be saved; and safety would be of less concern. The use of the foundry premix composition to prepare a sand molding medium for casting molded articles is also described.

The invention relates to a composition for a pasty fill and finishing material, a pasty fill and finishing material, and a method for producing a pasty fill and finishing material. The composition comprises at least one filler, at least one binding agent, and additives, wherein the at least one filler has a density dependent flowability (ff.sub.ρ) value of from 3 to 20.

The invention relates to a composition for a pasty fill and finishing material, a pasty fill and finishing material, and a method for producing a pasty fill and finishing material. The composition comprises at least one filler, at least one binding agent, and additives, wherein the at least one filler has a density dependent flowability (ff.sub.ρ) value of from 3 to 20.

A grout material for heat transfer according to the present invention comprises a sand particle; and an outer layer coated on the surface of individual sand particle, wherein the outer layer is composed of a mixture of graphite powder and a hydraulic inorganic binder.

A method for producing the grout material for heat transfer according to the present invention comprises the steps of: mixing graphite powder and a hydraulic inorganic binder; coating the mixture of graphite powder and the hydraulic inorganic binder on the outer surface of the sand particles while stirring the sand particles by spraying water; curing the hydraulic inorganic binder on the sand particles on which the mixture of graphite powder and the hydraulic inorganic binder is coated; and drying the sand particles on which the mixture of graphite powder and the hydraulic inorganic binder is coated.

The grout material for heat transfer is mixed with the mixture of water and bentonite powder to form a slurry and is used for a grouting process in which the prepared slurry is injected to give water-proof property to the grout material for heat transfer.

Embodiments of the disclosure provide a reinforced composite material including a composite material forming a geometric body, and a reinforcement member disposed in the composite material. In some embodiments, the reinforcement member includes (i) at least one elongate metal wire extending at least partially through the composite material, and (ii) at least one barb that extends from the elongate metal wire in a transverse direction to the elongate metal wire.

A friction material with reduced storage time is described, comprising a binder composition based on a hydraulic binder and its use in brake pads and industrial applications.

A friction material with reduced storage time is described, comprising a binder composition based on a hydraulic binder and its use in brake pads and industrial applications.

The present disclosure relates to the technical field of artificial cores, in particular to a preparation method of artificial sandstone and/or conglomerate core based on lithology and pore structure control. The method comprises the following steps: mixing and molding sand particles and a inorganic cementing agent in sequence, and further adding a curing agent for performing solidification to prepare an artificial sandstone and/or conglomerate core; wherein composition of the sand particles is determined according to lithology and pore structure of the artificial sandstone and/or conglomerate core. The present disclosure combines the lithology and the pore structure of the artificial sandstone and/or conglomerate core with the composition of the sand particles, particularly regulates and controls the composition of the sand particles according to the pore throat distribution pattern and the average pore throat radius, thereby performing precise control on the artificial sandstone and/or conglomerate core.

The present disclosure relates to the technical field of artificial cores, in particular to a preparation method of artificial sandstone and/or conglomerate core based on lithology and pore structure control. The method comprises the following steps: mixing and molding sand particles and a inorganic cementing agent in sequence, and further adding a curing agent for performing solidification to prepare an artificial sandstone and/or conglomerate core; wherein composition of the sand particles is determined according to lithology and pore structure of the artificial sandstone and/or conglomerate core. The present disclosure combines the lithology and the pore structure of the artificial sandstone and/or conglomerate core with the composition of the sand particles, particularly regulates and controls the composition of the sand particles according to the pore throat distribution pattern and the average pore throat radius, thereby performing precise control on the artificial sandstone and/or conglomerate core.