When the filler-bitumen ratio of asphalt mortar changes, its adhesion and viscoelasticity will also change, as well as its performance at the high and low temperatures, fatigue durability, and ductility. Thus, the app...When the filler-bitumen ratio of asphalt mortar changes, its adhesion and viscoelasticity will also change, as well as its performance at the high and low temperatures, fatigue durability, and ductility. Thus, the appropriate fillerbitumen ratio directly affects the asphalt mortar＇s performance. This paper tested the physical indexes of the No. 70 matrix asphalt mortar modified by additive Sasobit （SB） and Sasowam （SW） through dynamic shear rheometer and bending beam rheometer under different temperature conditions, and comprehensively analyzed the high-temperature anti-rutting and fatigue performance, low-temperature crack resistance performance, and ductility of asphalt mortar. The results show that ore powder not only can increase the antirutting factor but also can increase the aging resistance of asphalt. SB has better performances than SW at high temperatures. As for the filler-bitumen ratio of asphalt mortar with additive SB, the recommended value is between 0.8 and 1.2, and the value may be a little larger for that with SW.展开更多
文摘When the filler-bitumen ratio of asphalt mortar changes, its adhesion and viscoelasticity will also change, as well as its performance at the high and low temperatures, fatigue durability, and ductility. Thus, the appropriate fillerbitumen ratio directly affects the asphalt mortar＇s performance. This paper tested the physical indexes of the No. 70 matrix asphalt mortar modified by additive Sasobit （SB） and Sasowam （SW） through dynamic shear rheometer and bending beam rheometer under different temperature conditions, and comprehensively analyzed the high-temperature anti-rutting and fatigue performance, low-temperature crack resistance performance, and ductility of asphalt mortar. The results show that ore powder not only can increase the antirutting factor but also can increase the aging resistance of asphalt. SB has better performances than SW at high temperatures. As for the filler-bitumen ratio of asphalt mortar with additive SB, the recommended value is between 0.8 and 1.2, and the value may be a little larger for that with SW.
