论文部分内容阅读
在相同的储存时间和温度条件下,对Sasobit掺量为1%～5%的改性沥青进行离析试验;对Sasobit掺量为3%的改性沥青改变储存温度(100℃、120℃、140℃、163℃)和储存时间(1d、2d、3d、5d、7d)进行离析试验,以离析试验后上、下部沥青软化点差为指标,分析Sasobit掺量、储存温度和时间对改性沥青储存稳定性的影响。试验发现不同Sasobit掺量的改性沥青稳定性均较好,Sasobit改性沥青储存稳定性在低温时较高温时稳定,Sasobit改性沥青3d的储存稳定性最好。通过对比不同沥青显微照片,发现Sasobit改性沥青的改性剂分散均匀,较SBS改性沥青和橡胶粉改性沥青具有较好的储存稳定性。
Under the same storage time and temperature conditions, the segregation test was carried out on the modified asphalt with the Sasobit content of 1% ~ 5%. For the modified asphalt with the Sasobit content of 3%, the storage temperature (100 ℃, 120 ℃, 140 ℃, 163 ℃) and storage time (1d, 2d, 3d, 5d, 7d) were used to analyze the softening point differences of upper and lower bitumen after segregation test as an indicator to analyze the influence of Sasobit dosage, storage temperature and time on the storage of modified bitumen The impact of stability. The results showed that the stability of modified asphalt with different contents of Sasobit was good, the storage stability of Sasobit modified asphalt was stable at high temperature at low temperature, and the storage stability of Sasobit modified asphalt 3d was the best. By comparing different bitumen micrographs, it was found that modifier of Sasobit modified bitumen disperse evenly, which has better storage stability than SBS modified bitumen and rubber powder modified bitumen.