The fatigue life of the modified asphalt concrete under dynamic loading
Ye. A. Romasyuk, V. I. Bratchun, M. K. Pakter, A. A. Stukalov
Donbas National Academy of Civil Engineering and Architecture
Annotation: It has been found out that when different test temperatures fatigue life of asphalt with a complex-modified structure is much higher as compared with conventional asphalt concrete. Increasing the fatigue life in 1.5–2.0 times has been observed in asphalt concrete system «bitumen modified with 2.0 % by weight glycidyl acrylate ethylene-brand Elvaloy-AM + 0.2 % PFC-105 – mineral material, 0.7 % by weight activated Elvaloy AM» and 1.1–1.5 times in the complex – modified asphalt concrete cast «bitumen modified with 2.0 % by weight methyl styrene butadiene rubber SKMS-30 + 30 % technical sulfur – mineral powder, 0.5 % by weight activated SKMS-30». According to the formula of A. V. Rudenskii, coefficients of fatigue life for each type of asphalt concrete were calculated. Asphalt concrete with a complex – modified structure are 1.1–1.4 times smaller values of m, which testifies to their higher fatigue life. The change in the number of cycles to failure, depending on the period of «rest» (discharge) of the sample during the test transient cyclic loads has been considered. The relationship between stress in the fine-grained asphalt concrete type «B» and asphaltic concrete with a complex-modified structure Elvaloy-AM strain deformation at a frequency of 0.5 Hz and a temperature of 20 °C has been carried out.
Keywords: oil road bitumen, asphalt mix, asphalt road, the fatigue life of asphalt concrete.
Pages: 15-25.
Link for citation: Romasyuk, Ye. A.; Bratchun, V. I.; Pakter, M. K. [et al.]. The fatigue life of the modified asphalt concrete under dynamic loading. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2015. – Vol. 11, N 1. – Р. 15-25. – URL: https://donnasa.ru/publish_house/journals/spgs/2015-1/02_romasyuk_pakter_bratchun_stukalov.pdf (date of access: 16.09.2024). (in Russian)
Vol. 11, N 1 (2015)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture