A nano-modified material for cavity wall with insulation for prefabricated building, preparation method and application thereof, belonging to the technical field of building materials. The material includes splicing structures and a nano-modified silane waterproof coating, wherein the splicing structure includes a recycled concrete structure layer and a nano-modified foam concrete thermal insulation core layer, the recycled concrete structure layer is a hollow cuboid structure with openings at both ends, the nano-modified foam concrete thermal insulation core layer is a structure formed by casting inside the recycled concrete structure layer, and the nano-modified silane waterproof coating is applied at a butt joint of two of the splicing structures.

Disclosed are methods for incorporating core materials such as phase change materials or admixtures into building materials like concrete. The methods use cenospheres, which are then etched and loaded with the core material. The composition can also be coated with a thin film. Compositions containing cenospheres loaded with the various core materials are disclosed, as are building materials containing such compositions.

Provided is a building material that is lightweight, exhibits excellent formability, and is inhibited from being damaged during transportation, and a method for producing the same. Specifically, provided is a method for producing a building material, including: a first step of curing a core layer material including a hydraulic material, a silica-containing material, and an aluminum powder, to react the aluminum powder and form bubbles, and incompletely hardening the hydraulic material and the silica-containing material, to form a foamed core layer; a second step of dispersing a surface layer material including a hydraulic material, and a silica-containing material, to form an unfoamed surface layer; a third step of stacking the foamed core layer on the unfoamed surface layer, to form a stack including the unfoamed surface layer and the foamed core layer; and a fourth step of pressing and curing the stack, and a building material produced therewith.

A wall of a building structure, the wall comprising: inner and outer face surfaces formed from glass fibre reinforced board; a support structure comprising one or more rigid components positioned between the inner and outer face surfaces; and a quantity of low-density cellular lightweight concrete (CLC) which substantially fills the space between the inner and outer face surfaces.

The present Cellular Concrete Filled Structural Steel Wall Frames are interconnected in three dimensions with other modular construction elements to enable the rapid construction of multi-story buildings with improved quality of construction over that found in traditional multi-story building construction techniques. These Cellular Concrete Structural Steel Wall Frames typically have a Thin Concrete Wall Panel affixed to the exterior of the structural steel, and also electrical and plumbing rough utility components installed in the Wall Frames.

An aerated concrete-hybrid construction element comprises a plurality of support structure profiles integrated therein and arranged parallel to one another at a distance from one another. The support structure profiles have a rib running transversely to the plane of the construction element, each with a respective support structure limb angled in the same direction away from the plane of the rib and running parallel or approximately parallel to the adjacent outer surface of the construction element. The support structure limbs of the support structure profiles are cast into an aerated-concrete layer extending over the length of the support structure limbs in their juxtaposed arrangement.

Disclosed is an acid-modified flour and a method of making the acid-modified flour. The acid-modified flour is desirably prepared using a dry milling process. A starting flour is combined with a strong acid to form a mixture. The mixture is heated. A neutralizer is added to increase the pH of the mixture. If desired, the mixture can be dried and any agglomerates can be removed. The acid-modified flour can be used as a binder in a slurry for preparing one or more gypsum layers in a gypsum board.

Disclosed are a composite gypsum board and a method of preparing composite gypsum board. The board contains at least one set gypsum layer sandwiched between two cover sheets. The set gypsum layer is formed from at least stucco and water. The stucco material generally includes a high salt impurity content, for example, when the stucco is calcined from certain sources of low-quality synthetic gypsum. For example, in some embodiments, the salts are chloride salts, e.g., sodium chloride (NaCl), potassium chloride (KCl), magnesium chloride (MgCl.sub.2), and/or calcium chloride (CaCl.sub.2)). At least one of the cover sheets is composed of high absorption paper, which enhances the bond between the set gypsum layer and the cover sheet.

Disclosed herein is a thermal and/or fire resistant panel comprising: a panel body comprising a fire resistant composition, wherein the fire resistant composition comprises: a silane cross-linked hybrid inorganic polymer; and a siloxane.

A structural panel is manufactured from at least two generally parallel and spaced-apart thin-shell cementitious skins that are joined by a truss matrix. The elements creating the truss matrix, being the truss, the face mesh, and the insulating core, are selected to meet the structural loads to be placed thereon. The thickness of each cementitious skin is selected to meet the structural loads to be placed thereon.