多应力蠕变恢复试验评价Sasobit改性沥青

Evaluation on Sasobit Modified Asphalt by Multiple Stress Creep Recovery Test

介绍了采用Sasobit对50号沥青进行改性的试验结果.结果表明,采用Sasobit改性使50号基质沥青的复数模量（G＊）增加且使相位角（δ）减少,因此,使用Sasobit改性增加了沥青路面抗永久变形的能力,同时使压实温度降为100℃.多应力蠕变恢复（MSCR）试验结果表明,Sasobit对沥青的蠕变柔量（Jnr）和弹性恢复（R）产生影响,增加了沥青路面的弹性模量,同时有助于提高路面的耐久性.

This paper introduced the test result of modified No. 50 asphalt by Sasobit. The results showed that modified No. 50 asphalt by Sasobit could make the complex modulus （ G＊ ） increase and the phase angle （δ） decrease, so using Sasobit modified asphalt increased capacity of resistance to permanent deformation, meanwhile made the compaction temperature drop to 100℃. Multi-stress Creep Recovery （MSCR） test re- suits showed that Sasobit had impact on creep compliance of the asphalt （Jnr） and elastic recovery （R） , in- creased the elasticity modulus of the asphalt pavement and improved the durability of the road surface .