GLASS FIBROUS CONCRETE (VERSIONS) Russian patent published in 2007 - IPC C04B28/00 C04B14/44 C04B111/27 

FIELD: manufacture of building composite materials; glass fibrous mixes; construction engineering; permanent forms, decorative members, ventilated fronts.

SUBSTANCE: glass fibrous concrete mix contains cement, chemical additive, fine-grained sand, friable roving made from alkali-resistant glass fiber and water; chemical additive contains, mass-%: SiO₂, 88; plasticizing agent C-3,9-10; water, 2-3; alkali-resistant glass fiber has length from 21 mm to 40 mm at the following ratio of components, mass-%: cement, 48-53; chemical additive, 4-6; fine-grained sand,20-28; friable roving, 3-7; water, 13-17. According to another version, glass fibrous concrete mix contains cement, chemical additive, fine-grained sand, alkali-resistant glass fiber and water; chemical additive contains the following components, mass-%: SiO₂, 88; plasticizing agent C-3,9-10; water, 2-3; length of alkali-resistant glass fiber ranges from 21 mm to 40 mm at the following ratio of components, mass-%: cement, 45-57.5; chemical additive, 2-8; fine-grained sand,25-35; fiber, 0.5-9; water, 15-20.

EFFECT: enhanced compressive strength, tensile strength and tensile strength at bending; reduction of water permeability of mixes.

3 cl, 1 tbl, 5 ex