About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Shehkovtsova S.Yu. – candidate of technical sciences, assistant E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Moscow State University of Civil Engineering The organization address: 129337, Russia, Moscow, Yaroslavskoye Shosse, 26 Vysotskaya M.A. – candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Belgorod State Technological University named after V.G. Schukhov The organization address: 308012, Russia, Belgorod, Kostyukova st., 46 |
| Title of the article | The influence of single-walled carbon nanotubes in the temperature range of efficiency of polymer-bitumen binders and asphalt concretes on their basis |
| Abstract. | Problem statement. The purpose of the work – is to develop compositions of effective nanomodified polymer-modified binders and improved asphaltic concrete on their basis with an extended temperature range of efficiency. Study of morphostructural features of modified polymer-bitumen binders. Results. The influence of the content of single-walled carbon nanotubes on the main physico-mechanical properties of polymer-modified binders was studied. Using optical methods and fluorescence microscopy, the influence of nanomodifiers on the morphostructural features of polymer-bitumen binders has been studied. Conclusions. The significance for the construction industry lies in the fact that effective asphalt-concrete has been developed with an extended operating temperature range based on nanomodified polymer-bitumen binders. The rational content of the modifying additive (0,0001 %) in the binder composition was established, which ensures achievement of the specified parameters. The character of the effect of single-walled carbon nanotubes on morphostructural features is established, which consists in the fact that the nanomodifier initiates the processes of structuring interphase layers, which leads to strengthening of physical bonds between macromolecules of the polymer and the disperse phase of the organic binder-a «corrugated» structure is formed. The study of films of polymer-bitumen binders made it possible to note that when a nanomodifier is introduced, the polymer macromolecules are reduced and their distribution over the volume of the binder more uniform, which ensures its stability. It has been established that the introduction of a rational amount of nanomodifier allows to expand the required temperature range of the asphalt-concrete coating serviceability by 25-34 %, while reducing the polymer. |
| Keywords. | bitumen, polymer, single-walled carbon nanotubes, the temperature interval of efficiency, morphology, shear resistance, crack resistance. |
| For citations: | Shehkovtsova S.Yu., Vysotskaya M.A. The influence of single-walled carbon nanotubes in the temperature range of efficiency of polymer-bitumen binders and asphalt concretes on their basis // Izvestiya KGASU. 2017. №4(42) P.335-342. |
