期刊论文

Liu, Chaochao

英文

Construction and Building Materials

0950-0618

2020

230

116972

10.1016/j.conbuildmat.2019.116972

The test conditions of the asphalt mixture Long-Term-Oven-Aging (LTOA) test method proposed by SHRP are fixed. That is, the asphalt mixture test samples are aged in the oven for 5 days, and the oven temperature is controlled to 85 °C [27]. This condition is used to simulate the long-term aging of actual asphalt pavement for 6–9 years. The test conditions are not suitable for fatigue performance analysis. This is because the fatigue damage of asphalt pavement is related to the amount of traffic

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The objective of this paper is to reveal the effects of aging on the fatigue performance of asphalt mixture based on variation patterns of fatigue parameters with aging degrees. Specimens with different aging degrees were prepared by modified SHRP's Long-Term-Oven Aging (LTOA) test method, in which five different aging durations, included 0, 1, 3, 5, 7 days, were adopted to substitute the fixed 5 days. The fatigue parameters, including stiffness modulus, fatigue life, phase angle, Plateau Value (PV), and cumulative dissipation energy of specimens with different aging degrees under different st...