To study the dynamic modulus characteristics of aged asphalt mortar,uniaxial compression dynamic mod-ulus tests were conducted on three types of asphalt mortar with five levels of aging and at three different test tempera-tures.The test results indicate that aging degree,loading frequency,and temperature significantly affect the dynamic modulus of asphalt mortar.The dynamic modulus increases with the degree of aging and loading frequency,while it decreases with increasing temperature.The phase angle of asphalt mortar varies with temperature and loading fre-quency,showing a consistent trend across different aging degrees at the same temperature.These findings can pro-vide valuable references for the design and maintenance decision-making of asphalt pavements in the future.
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