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At present, there are many studies on asphalt mixtures in China, but the research on asphalt mortar is not enough. In this paper, through trabecular bending tests of base asphalt mortar and SBS modified asphalt mortar under different aging degrees,and the change rules of mechanical properties of two kinds of asphalt mortar under different aging degrees were studied. By designing self-healing experiments of asphalt mortar specimens. The test results show that SBS modified asphalt mortar has better deformation resistance and load-bearing capacity than base asphalt mortar, SBS modified asphalt has better pavement performance, and the deformation resistance and stress relaxation performance of SBS modified asphalt mortar are greatly affected by short-term aging, which is the main factor affecting the healing degree. Therefore, controlling the short-term thermal aging of SBS modified asphalt mixture during paving and transportation is of great significance to the improvement of pavement service life.

Study on Bending Resistance and Self-healing Property of SBS Modified Asphalt Mortar under Thermal Aging