Abstract
The article provides information on the physical and mechanical properties of polymer-bitumen compositions obtained by modifying road bitumen BND 50/70 with elastomers SKEPT-60 and SKN-26 and determination of the obtained polymer-bitumen composites. The properties of composite samples of various concentrations (2.5, 3.0, 5.0%, 6.5 and 7.0%) were determined: needle depth, softening, brittleness and flash point, stretching and adhesion. It was determined that the physical and mechanical characteristics of polymer-bitumen composite materials obtained at high concentrations (6.5, 7.0%) are improved
Highlights
A large amount of material is used around the world for the construction of new roads and repair of existing road surfaces, among which the leading place is asphalt concrete based on bituminous binders
The most effective is the modification of bitumen with thermoplastic elastomers [3, 27]
The task of this work is to determine the technological and physical-mechanical properties of composites based on BND 50/70 road bitumen modified with elastomers SKEPT-60 and SKN26, as well as the interaction with mineral fillers is to obtain quantitative dependencies
Summary
A large amount of material is used around the world for the construction of new roads and repair of existing road surfaces, among which the leading place is asphalt concrete based on bituminous binders. Because synthetic polymer materials [6] produce hundreds of thousands of tons per year and are more accessible, and second, a number of valuable properties inherent in polymers with such a change (high temperature range, elasticity, low temperature crack resistance, tensile strength, adhesion, brittleness and s.) passes through bitumen. The use of polymer additives in road construction reduces the maintenance and repair costs of highways by 30%. The task of this work is to determine the technological and physical-mechanical properties of composites based on BND 50/70 road bitumen modified with elastomers SKEPT-60 (ethylene-propylene triple copolymer) and SKN26 (synthetic butadiene nitrile rubber), as well as the interaction with mineral fillers is to obtain quantitative dependencies
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