LIGHT COMPOSITION MATERIAL FOR RESTORATION WORKS Russian patent published in 2005 - IPC

FIELD: building materials.

SUBSTANCE: invention proposes light composition material comprising cement, sand, superplasticizer based on naphthalene sulfoacid sodium salt and water comprises additionally alumosilicate microspheres and vinyl acetate copolymer in the following ratio of components, mass p. p.: cement, 20.0-90.0; alumosilicate microspheres, 10.0-80.0; sand, 30.0, not above; superplasticizer, 1.7, not above; vinyl acetate copolymer, 1.0-4.0; water, 22.0-55.02. Material can comprise Portland cement as cement and mineral dyes in the amount 5.0-10.0 mas. p.p or dyes based on organic polymers in the amount 1.5-5.0 mas. p. p. additionally. Used alumosilicate microspheres represents hollow spherical particles of diameter from 50 to 250 mcm with uniform non-porous walls of thickness from 2 to 10 mcm wherein internal cavity of particles is filled with nitrogen and carbon dioxide mainly. Proposed material can be used in carrying out restorative-recovery works, in particular, in restoration of partially or completely lost fragments of buildings, sculptures or other monuments of architecture. Invention provides enhancing quality of repair-recovery works both in internal compartments and under conditions of environment.

EFFECT: improved and valuable properties of material.

5 cl, 3 ex