BRICKS OF BITUMEN MASS AND METHOD OF THEIR MANUFACTURE Russian patent published in 2018 - IPC C08L95/00 C08L17/00 C08J3/20 

FIELD: construction.

SUBSTANCE: invention relates to specialized mixtures for paving, namely to mixtures for a waterproofing layer. Briquettes of bitumen mixture contain bitumen, rubber chips, parabanic acid, crushed stone and sand. Crushed stone that is used in the method is either crushed stone with fraction of 1:3 mm, or sand with fraction of 0.25:0.5. If rubber crumb is used, it is finely dispersed, with particle sizes of 0.01–15 mm, black and gray crumb is used in a ratio of 1:1–3:1, respectively, with the following ratio of components, mass%: rubble 50–53, sand 30–32, bitumen 18.8–12.6, rubber crumbs 1–2, parabanic acid 0.2–0.4. Bitumen mastic is pre-made; it contains rubber chips 5–10 %, parabanic acid 1–2 % and the rest is bitumen. Bitumen, heated up to 190–205 °C, is mixed with rubber chips in two stages. Resulting bituminous mastic is mixed with sand and rubble and heated to 160–190 °C, then poured into molds and cooled.

EFFECT: invention makes it possible to increase the strength and elasticity of waterproofing.

2 cl, 3 tbl