POLYMER-BITUMEN ROOF

Abstract

The utility model relates to the field of road construction materials, namely to the production of polymer-bitumen binders (PBB) used in the manufacture of asphalt concrete mixtures, waterproofing and roofing materials. The proposed utility model relates to modified polymer-bitumen compositions containing bitumen, recycled polyethylene, Uniplast-3 plasticizer, expanded vermiculite and gossypol resin. The technical result of the proposed utility model is to improve the adhesive properties, increase heat resistance, resistance to deformation, reduce the tendency to delamination and increase the structural stability of the polymer-bitumen binder. The proposed PBB contains the following components, in wt.%: bitumen - 83.7; recycled polyethylene - 4.3; Uniplast-3 - 3.6; expanded vermiculite - 6.0; gossypol resin - 2.4. The developed composition is characterized by a softening temperature of 70°C and a penetration of 165 × 0.1 mm.Additionally, experimental PBB formulations containing recycled polyethylene, Uniplast-3 plasticizer, and expanded vermiculite were studied. The studies showed that the addition of gossypol resin to the proposed PBB promotes increased plasticity, improved adhesion, and the formation of a more stable structure. The use of recycled polyethylene improves the performance characteristics of the polymer-bitumen binder while reducing the cost of the composition, and also promotes the rational use of polymer waste. To confirm the structure and interaction of the components, FTIR spectroscopic analysis was conducted, confirming the presence of characteristic functional groups and the formation of a structured polymer-bitumen system.The proposed polymer-bitumen binder can be used in the construction and repair of highways, airfield pavements, bridge structures, as well as in the production of waterproofing and roofing materials.