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. | Damir A. Ayupov, associate professor, candidate of technical sciences, Kazan State University of Architecture and Engineering, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0002-4145-5250 Vera S. Khabibullina, Kazan State University of Architecture and Engineering, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Zarina F. Khairullina, Kazan State University of Architecture and Engineering, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it |
| Title of the article | Durability of bitumen polymer binders and features of construction work with them |
| Abstract. | The aim of the study is to conduct a comparative durability assessment of the bitumen binders with various polymer modifiers. The tasks are: 1. to experimentally obtain the dependence of the temperature and humid air exposure time on bitumen-polymer binders penetration index. 2. to construct aging prediction curves for the developed compositions. 3. to determine the work features when constructing coatings using bitumen-polymer binders. The relevance of the work is due to the increasing volumes of modified bitumen application, as well as the susceptibility to atmospheric aging of the most popular bitumen modifiers – thermoplastic elastomers of the styrene-butadiene-styrene type. In the research seven different bitumen polymer binders have been developed, where the following modifiers were used: surfactant Amdor-20T, SBS thermoplastic elastomer, epoxy resin ED-20, single-walled carbon nanotubes Tuball, ethylene-vinyl acetate copolymer (Sevilene), epoxidized silane, MDI polyisocyanate, Laprol 3603 and dicumyl peroxide. Binder durability was assessed by the method developed for polymeric materials. The tests were carried out at elevated temperatures: 95, 105, 115 and 125 °C and 65% air humidity. The temperatures for artificial aging of binders were selected in such a way as to maximally intensify the process and to preserve the mechanism of natural aging during operation. Approximation by quadratic polynomials was used to obtain dependences of penetration change on the duration of aging under the specified factors of influence, which allowed us to determine the activation energy for changing penetration. Taking into account the equivalent temperature, the time of exposure to factors sufficient for the composition to achieve the required hardness was determined, and prediction curves were constructed. It was discovered that the most resistant to aging are binders obtained by chemical modification: with sevilen and epoxysilane, as well as bitumen-urethane, while the widely used compositions with styrene-butadiene-styrene turned out to be the most susceptible to aging. |
| Keywords. | bitumen, bitumen aging, bitumen durability, polymer-modified binder aging, polymer-modified binder durability, bitumen modification, polymer-modified binder |
| For citations: | Ayupov D.A., Khabibullina V.S., Khairullina Z.F. Durability of bitumen polymer binders and features of construction work with them // News of KSUAE, 2024, № 3(69), p. 27-37, DOI: 10.48612/NewsKSUAE/69.3, EDN: EZLCXS |
