METHOD OF MANUFACTURE OF CONSTRUCTION STRUCTURES Russian patent published in 1995 - IPC

FIELD: manufacture of construction materials. SUBSTANCE: calcium sulfate, mineral and chemical additives are used. Earthy gypsum is used as calcium sulfate dehydrate in proportion of 0.5-1,5 parts of the whole mass. Glass powder and Portland-cement are used as mineral additives in proportion of 0.5-1.5 each of the whole mass; LST powder as chemical additive in the same proportion as the above additives. Moreover, fine-crystal fraction structure (2-10 mm) gypsum rock (heated up to 160-170 C) is introduced in the amount of 35-45 percent of building plaster. EFFECT: higher durability and lower prime cost.