Modifying Bitumen with Recycled PET Plastics to Enhance Its Water Resistance and Strength Characteristics
Jexembayeva A. Konkanov M. Aruova L. Kirgizbayev A. Zhaksylykova L.
December 2024Multidisciplinary Digital Publishing Institute (MDPI)
Polymers
2024#16Issue 23
This study investigates the modification of bituminous mixtures by varying percentages of PET particles (1%, 3%, 5%, 8%, 10%, and 12% PET). The following methods were employed to analyze the samples: the ring-and-ball softening point determination method (ASTM D36/D36M-14), the Fraass breaking point determination method (EN 12593: 2015), the elongation determination method (EN 13589: 2014), and the needle penetration depth determination method (EN 1426: 2015). Optimal bitumen/PET ratios were identified to obtain modified bituminous mixtures (MBMs) with enhanced operational characteristics (5% and 8% PET). The physical and mechanical properties of the investigated bitumen samples and PET were determined. A comparative analysis of the modified bituminous mixture samples based on their physical and mechanical properties was conducted. Microstructures of the surface of modified bituminous mixture samples with varying modifier contents were obtained. An X-ray structural analysis was performed on the samples of modified bituminous mixtures with varying PET contents. The dependencies of the moisture absorption rate on time were determined for the samples of modified bituminous mixtures with different modifier contents. The values of the stress intensity factor were determined based on the number of loading cycles in fatigue tests using three-point bending for the samples of modified bituminous mixtures with varying modifier contents.
bitumen , mechanical properties , modification , polyethylene terephthalate , polymer , strength , stress
Text of the article Перейти на текст статьи
Department of Industrial and Civil Construction Technology, L.N. Gumilyov, Eurasian National University, Astana, 010008, Kazakhstan
ENU Lab, L.N. Gumilyov, Eurasian National University, Astana, 010008, Kazakhstan
Department of Industrial and Civil Construction Technology
ENU Lab
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026