Abstract
Matrix and SBS modified asphalt mortar were prepared by replacing mineral powder with cement under different filler-asphalt ratios. The variation laws of ductility, softening point, penetration, cone penetration, and Brookfield rotational viscosity of the two kinds of pastes with filler-asphalt ratio were studied. The shear strength of the two kinds of asphalt mortar was calculated. And the viscosity-temperature curve was established. The best filler-asphalt ratio was recommended. The results show that the addition of cement and the increase of filler-asphalt ratio will reduce the ductility, penetration, and cone penetration of asphalt mortar, while improve the softening point, shear strength, and viscosity. In a specific range of filler-asphalt ratios, cement can improve the high-temperature performance of asphalt mortar without significant impact on the low-temperature performance.
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