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Increasing the Fatigue Life of Asphalt Concrete by Complex Modification of Their Structure

V. V. JhevanovFSBEI HE «Donbas National Academy of Civil Engineering and Architecture»V. I. BratchunFSBEI HE «Donbas National Academy of Civil Engineering and Architecture»V. A. PostoenkoFSBEI HE «Donbas National Academy of Civil Engineering and Architecture»
Abstract: It has been experimentally proved that the complex modification of the structure of asphalt concrete, namely: surface activation of mineral components and bitumen of asphalt concrete with ethylene glycidylacrylate of the Elvaloy-AM brand allowed to increase the fatigue life of modified asphalt concrete (65,100 cycles compared with 22,000 cycles of traditional asphalt concrete (DSTU B V.2.7-119:2011) at a bending short-term stress of 0.4 MPa. It is shown that the fatigue dependences of modified asphalt concrete, constructed in logarithmic coordinates, have a more gentle slope angle, which indicates a lesser effect of repeated dynamic loads on the magnitude of residual deformations, compared with traditional and crushed-mastic asphalt concrete (CMAC). It is established that in order to ensure maximum fatigue durability in asphalt concrete of types A and B, the bitumen content should be 0.5 % higher in comparison with the optimal content of organic binder calculated by the Soyuzdornia method (N. N. Ivanov and V. V. Okhotina).

Keywords: bitumen, asphalt concrete, modifier, mechanical activation, strength, fatigue durability.

Pages: 70-75.

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For citation:

For citation: Jhevanov, V. V.; Bratchun, V. I.; Postoenko, V. A. Increasing the Fatigue Life of Asphalt Concrete by Complex Modification of Their Structure. – Text : electronic. – In: <em>Вестник Донбасской национальной академии строительства и архитектуры</em>. – 2023. – Issue 2023-4(162) Scientific and technical achievements of students of the construction and architectural industry. – Р. 70-75. – URL: https://donnasa.ru/publish_house/journals/vestnik/2023/2023-4(162)/st_13_zhevanov_bratchun_postoenko.pdf (date of access: 22.12.2024). – ISSN 2519-2817.

Issue 2023-4 (162)
Journal: Вестник Донбасской национальной академии строительства и архитектуры
Publish house: ФГБОУ ВО "Донбасская национальная академия строительства и архитектуры"