Fire resistant gypsum panels are provided herein, with assemblies including the same, and methods for making the same. A gypsum panel includes a set gypsum core and a mat facing material. The set gypsum core includes a fire resistant additive. The fire resistant additive consists essentially of clay, or a non-intumescent fire resistant additive. The panel displays an acceptable fire rating without requiring the use of vermiculite or intumescent materials.

Described herein are cementitious compositions comprising biochar and methods of making such compositions. The compositions find use in a variety of applications, including use in a variety of building materials and building applications.

Concrete compositions containing cement, a fine aggregate such as sand, a coarse aggregate such as crushed limestone, an industrial waste material such as electric arc furnace dust, cement kiln dust, oil ash, or limestone powder. High performance concretes made therefrom and methods of producing such concretes are also specified. The addition of industrial waste materials and nano silica provides enhanced mechanical strength (e.g. compressive strength, flexural strength) and improved durability (e.g. resistance to penetration of chloride ions) to the high performance concretes.

Concrete compositions containing cement, a fine aggregate such as sand, a coarse aggregate such as crushed limestone, an industrial waste material such as electric arc furnace dust, cement kiln dust, oil ash, or limestone powder. High performance concretes made therefrom and methods of producing such concretes are also specified. The addition of industrial waste materials and nano silica provides enhanced mechanical strength (e.g. compressive strength, flexural strength) and improved durability (e.g. resistance to penetration of chloride ions) to the high performance concretes.

Methods for the treatment of non-hardened cement compositions, especially returned concrete, and to admixtures suitable to be used in such methods. Admixtures included modified starch and a sugar. Further, solid granules obtained by such methods and fresh concrete or mortar utilizing solid granules thus obtained.

Concrete formulation for 3D printing which results in improved structural integrity of concrete members printed from the formulation.

The present disclosure is directed to a gypsum panel and a method of making such gypsum panel. For instance, the gypsum panel comprises a gypsum core and a first facing material and a second facing material sandwiching the gypsum core. The gypsum core includes gypsum and a maleic anhydride polymer comprising maleic anhydride repeating units present in an amount of more than 10 wt. % based on the weight of the maleic anhydride polymer. The method of the present disclosure is directed to making the aforementioned gypsum panel by providing the first facing material, providing a gypsum slurry comprising gypsum, water, and a maleic anhydride polymer onto the first facing material and providing a second facing material on the gypsum slurry.

Described herein are cementitious compositions comprising biochar and methods of making such compositions. The compositions find use in a variety of applications, including use in a variety of building materials and building applications.