摘要:
An artificial stone building tile and method. Disclosed is an artificial stone building tile and a method of making the building tile. The building tile has a low density and significant flexibility, and is nailable without cracking. It is made by layers of cement formulations separated by layers of metal mesh. Color batches of cement are prepared and placed in the bottom of a mold, with the color batches becoming the visible face of the building tile.
摘要:
In conjunction with water, a mixture can be used to prepare a sprayable slurry that hydrates to form a machinable plaster composition. The mixture includes from about 80% to about 98% by weight calcium sulfate hemihydrate, from about 1% to about 5% by weight adhesive binder for adhering said plaster mixture to a substrate and from about 0.001% to about 10% of a polysaccharide. The mixture is made into a slurry by the addition of from 10% to about 50 weight water based on the weight of the mixture.
摘要:
A workable high-strength heat insulating material containing no asbestos is provided. The high-strength heat insulating material includes fibers of aromatic polyether amide dispersed in the form of filaments, 1-5% by weight, and fibrous wollastonite, 20-70% by weight. The material has a matrix made of a calcium silicate hydrate, and has a density between 1.3-1.9 g/cm.sup.3.
摘要:
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 board 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.
摘要:
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.
摘要:
A lightweight gypsum wallboard having a foamed gypsum core reinforced with pre-gelatinized, e.g., pre-gelled, starch and prepared by mixing an aqueous foam into a gypsum slurry comprising a source of calcined gypsum (commonly known as plaster of Paris), pre-gelled starch and a lignosulfonate dispersant; allowing the so-formed gypsum slurry to set, and then drying the set gypsum core.
摘要:
Disclosed are cementitious articles with hydrophobic finish. In some embodiments, the article is a waterproof gypsum panel that is surface reinforced with inorganic mineral fibers that face a flexible and hydrophobic cementitious finish possessing beneficial waterproofing properties. The waterproof gypsum panels of the invention are useful in many applications, such as, for example, tilebacker board in wet or dry areas of buildings, exterior weather barrier panel for use as exterior sheathing, and roof cover board having superior water durability and extremely low surface absorption. The flexible and hydrophobic cementitious finish of the invention can include Class C fly ash, film-forming polymer, silane compound (e.g., alkyl alkoxysilane), and other optional additives.
摘要:
An artificial stone building tile and method. Disclosed is an artificial stone building tile and a method of making the building tile. The building tile has a low density and significant flexibility, and is nailable without cracking. It is made by layers of cement formulations separated by layers of metal mesh. Color batches of cement are prepared and placed in the bottom of a mold, with the color batches becoming the visible face of the building tile.
摘要:
A molding of calcium silicate having high strength, which is similar to a natural timber, wherein tobermorite, C--S--H (Calcium Silicate hydrate) and quartz are mixed, and glass fiber and pulp are added, respectively, and a Ti/Qi peak ratio of which is powder X-ray diffracted is 0.1 to 1.0, and an absolute bulk density of the molding is 0.3 to 0.7 g/cc.
摘要:
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 board 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.