Methods of uniform distribution of fibrous materials in asphalt materials with dispersed bitumen were studied. The key issue in this area is the technology of introducing reinforcing elements into the volume of asphalt concrete mix. Fiber from polyacrylonitrile fibers is considered as a reinforcing material. To achieve the maximum reinforcing effect for any materials, including asphalt, due to the introduction of short fibers and threads, their uniform distribution in semi-finished mixtures and in the formed structural material is necessary. The principal possibility of uniform distribution of reinforcing elements (in the form of short fibers of polyacrylonitrile fiber) in the volume of reinforced asphalt materials based on viscous dispersed bitumens is established. A method for the uniform introduction of fiber into the bitumen suspension for the arranging springing asphalt concrete layers has been developed. For the first time, a material from a bituminous suspension reinforced with polyacrylonitrile fiber, which is not destroyed in thin layers under the action of bending loads, but reversibly deformed, was obtained. Keywords: cold asphalt concrete mixes, dispersed bitumen, testing, springing asphalt concrete layers, fiber, bitumen suspension.
Предложена холодная технология производства композиционного дисперсно-армированного холодного щебёночно-мастичного асфальта. Теоретически проанализированы процессы структурообразования композиционного холодного дисперсно-армированного асфальта. Исследованы основные дорожно-технические свойства холодного композиционного дисперсно-армированного щебёночномастичного асфальта. Композиционный дисперсно-армированный холодный щебёночно-мастичный асфальт целесообразно применять для строительства и ремонта дорожных покрытий, эксплуатирующихся в условиях повышенных летних температур и транспортных нагрузок Ключевые слова: технология композиционного материала, дисперсное армирование волокнами, базальтовая фибра, щебёночно-мастичный асфальт, колееобразование, асфальт с дисперсным битумом. Andronov S.Y. TECHNOLOGY OF DISPERSE-REINFORCED COMPOSITION COLD PULP-FILM-MASTIC ASPHALT A cold production technology of composite disperse reinforced cold crushed stone mastic asphalt. composite structure formation processes of cold Fibrous asphalt theoretically analyzed. The basic technical characteristics of road cold composite Fibrous crushed stone mastic asphalt. The composite dispersionreinforced cold crushed stone mastic asphalt is appropriate to apply for the construction and repair of road surfaces, operating in conditions in elevated summer temperatures and traffic loads Key words: composite material technology, particulate reinforcement fibers, basalt fibers, crushed stone mastic asphalt rutting asphalt bitumen to disperse.
. In this article, the authors have solved the applied problem of uniform distribution of fiber fibers in cold asphalt concrete mix. The principal possibility of uniform distribution of reinforcing elements in the form of short fibers of basalt and polyacrylonitrile fibers in the volume of reinforced asphalt materials based on microdispersed bitumens has been established. The technology of introducing fiber into mixtures-semi-finished asphalt materials based on microdispersed bitumens has been developed. At an asphalt concrete plant, a suspension ("solution") of basalt fiber or fiber from polyacrylonitrile fibers of the required concentration is prepared in a water supply container.
The most appropriate way to mix water with fiber in the flow container is bubbling with compressed air using a compressor, which is the standard equipment of an asphalt concrete plant.
Any dispersed-reinforced asphalt materials based on microdispersed bitumen can be prepared using a fiber "solution".
Bituminous suspension in conditions that exclude water evaporation (in sealed containers), as a result of spontaneous processes, tends to a stable aggregate state. The most stable aggregate state of the bituminous suspension is plastic. In the process of preparing a bituminous suspension, it is necessary to ensure that it is obtained in a plastic state (similar to plasticine). In the plastic state, the mixture will not delaminate not only during storage, but also during transportation.
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