Composite gypsum board and methods related thereto

• Main Authors: Li, Alfred C, Sang, Yijun, Diefenbacher, Gregg G, Todd, Bradley W, Song, Weixin D, Christ, Brian J, Vilinska, Annamaria, Jones, Fredrick T
• Format: Patent
• Language: English
• Published: 17.09.2024
• Subjects: ARTIFICIAL STONE; BUILDING; BUILDING MATERIALS; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; FIXED CONSTRUCTIONS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; REFRACTORIES; SLAG; STRUCTURAL ELEMENTS; TRANSPORTING; TREATMENT OF NATURAL STONE

Disclosed is a composite gypsum board comprising a board core and a concentrated layer of substantial thickness (e.g., at least about 0.02 inches). The concentrated layer includes a higher weight percentage of an enhancing additive than the hoard core. The board core has a thickness greater than the thickness of the concentrated layer and forms the bulk of the board volume. The concentrated layer has a higher density (e.g., at least about 1.1 times greater) than the density of the board core. Also disclosed is a method of preparing a composite gypsum board.