A cement board includes a lightweight core between a first covering layer and a second covering layer, wherein the lightweight core results from the curing of an aqueous cementitious composition including, based on the total dry matter, 20 to 90 wt % of a reactive binder mixture and 10 to 80 wt % of fillers, wherein the reactive binder mixture includes, based on the total dry matter of the reactive binder mixture: 15 to 25 wt % hydraulic cement, 50 to 65 wt % calcium sulphate hemihydrate, and 10 to 35 wt % pozzolanic material; and at least one of the first and second covering layers includes a glass fibre-based sheeting, the sheeting being fully or partially embedded in a cementitious matrix.

A prefabricated concrete element (10) having a textile reinforcement (17) comprising fastening elements (12, 13, 14, 15), which are connected directly to the reinforcement (17). The fastening elements (12 to 15) can have a bent form and pass through a flat side of the prefabricated concrete element (10). The fastening elements can also have a straight or elongated form and emerge on narrow sides of a plate-shaped prefabricated concrete element (I 0). Because of the direct connection between the fastening element (12 to 15) and the reinforcement (17), the prefabricated concrete element can have an especially extensive and thin form and thus can be used as a faade panel.

Gypsum panels, sheathing systems, and methods of making and using the same are provided. A gypsum panel includes a gypsum core associated with a first fiberglass mat having a continuous barrier coating, the coating penetrating a portion of the first fiberglass mat opposite the gypsum core, wherein gypsum penetrates a remaining fibrous portion of the first fiberglass mat such that voids in the first fiberglass mat are substantially eliminated. A building sheathing system includes at least two gypsum panels and a seaming component to provide a seam at an interface between the gypsum panels.

A building board, particularly a gypsum board, can have a high fastener sealability if protected by the combination of thin layers of an extruded polymer film and a thermoplastic coating layer. The combination of extruded polymer film and thermoplastic coating layer is designed such that the gypsum board can also tolerate overdriven fasteners, thus exceeding the requirements of ASTM D1970-15.

Coated nonwoven fibrous mats, building panels, and methods for making the same are provided. A coated nonwoven fiber mat includes a nonwoven fibrous mat having a continuous barrier coating on a surface thereof. The continuous barrier coating includes a set composition of gypsum and a binder. A building panel includes a panel core associated with a coated nonwoven fiber mat. A method of making a coated nonwoven fibrous mat includes depositing a composition of water, gypsum stucco, and a binder onto a surface of a nonwoven fibrous mat and setting the composition to form a continuous barrier coating.

Embodiments of the invention provide roofing boards and roofing systems having improved fire resistance properties and methods related to the same. According to one aspect, a roofing system is provided. The roofing system includes roofing panels positioned atop structural support members to form a roof deck. Roofing boards are positioned atop the roof deck and coupled thereto and a roofing membrane is positioned atop the roofing boards and coupled therewith. The roofing boards include a coating of a mineral based material applied to one or more surfaces in an amount between the range of about 0.10 lbs/ft.sup.2 and about 0.70 lbs/ft.sup.2. The mineral based material coating enables the roofing boards to pass the UL 790 class A tests, such as the burning brand test.

This disclosure provides an eco-friendly multi-layer fabric reinforced cementitious matrix (FRCM) enhanced by nanoparticles. The FRCM is developed for structural strengthening and/or repairing in reinforced concrete buildings. The FRCM consists of multi-layer fabrics as load-carrying and crack control components and a cementitious matrix as bedding for the fabric layers. The cementitious matrix is eco-friendly based on a main constituent of ground granulated blast-furnace slag (GGBS) and recycled glass cullets. Some additions, including nanoparticles, superplasticizer, hydroxy propyl methyl cellulose and/or starch ether, are added to achieve proper workability and rheology for application requirements, and to enhance fresh properties, mechanical properties and/or durability. Man-made fabric and natural fabric are embedded in the cementitious matrix with designated purposes of load carrying and crack control.

A floorboard, includes a carrier plate and a veneer arranged on a topside of the carrier plate, wherein the carrier plate and the veneer are connected with each other via a resin, wherein an edge strip made of the resin is provided on at least two side margins of the veneer, and wherein a surface of the edge strip extends in a same plane as a surface of the veneer.

Modular, prefabricated insulating concrete forms and methods for fabricating such forms are presented herein. In one aspect, a reinforced cement based coating is disposed over at least the top, bottom, and outward facing surfaces of insulating foam cores comprising two sidewalls of a modular, prefabricated insulating concrete form (ICF). In a further aspect, a cement based finish coating is disposed over a portion of the reinforced cement based coating located over an outward facing surface of a sidewall of the ICF. In another aspect, at least a portion of the top and bottom surfaces of the sidewalls are disposed at an angle with respect to the outward facing surfaces of the sidewalls such that the sloped portions of the bottom and top surfaces are parallel. In this manner, multiple ICFs interlock when stacked on top of one another.

A concrete construction (100) made by 3D concrete printing that contains: two or more layers (102, 106) of cementitious material extruded one above the other, and at least one elongated steel element (104) reinforcing at least one of the layers (102, 106). The elongated steel element (104) has an elastic and plastic elongation at break that exceeds 4%. The high elongation of the elongated steel element gives an increased ductility to the concrete structure (100).