In order to explore the rheological and anti-aging properties of nano-clay and SBS compositely modified asphalt,physical tests,dynamic shear rheology (DSR),multi-stress creep recovery test (MSCR) and bending beam rheology (BBR) tests were used.The modified asphalt with different nano-clay dosage before and after the rotating film oven heating aging test (RTFOT) was compared to investigate the ageing resistance under different nano-clay dosage before and after short-term aging.The results shown that the addition of nano-clay can significantly improve the high temperature,low temperature performance and anti-aging performance of the modified asphalt.With the increase of the amount of nano-clay,the performance indexes of anti-rutting factor and irreversible creep compliance of the modified asphalt improved to some extent after short-term aging.C16H33(CH3)3NBr activated nano-clay can exhibit better chemical activation and anti-aging properties.
Zhang Heliang
. Rheological property of nano-clay/SBS composite modified asphalt before and after short-term aging[J]. New Chemical Materials, 2021
, 49(2)
: 263
-267
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.02.060
[1] 李雪峰.纳米ZnO/SBS改性沥青性能及共混机理研究[D].扬州:扬州大学,2006.
[2] 葛守飞,张洪亮.纳米改性沥青综述[J].公路交通科技(应用技术版),2013,9(11):39-43,46.
[3] 黄子义,刘攀.碳纳米管/SBS复合改性沥青路用性能研究[J].公路交通技术,2019,35(1):24-29.
[4] 张怡文,张壮.纳米SiO2-SBS复合改性与SBS改性沥青高温性能对比研究[J].内蒙古公路与运输,2019(2):39-42.
[5] Shafabakhsh G H,Ani O J.Experimental investigation of effect of Nano TiO2/SiO2 modified bitumen on the rutting and fatigue performance of asphalt mixtures containing steel slag aggregates[J].Construction & Building Materials,2015,98:692-702.
[6] 王琼.纳米粘土改性沥青的制备与性能研究[D].天津:河北工业大学,2016.
[7] Rezaei S,Ziari H,Nowbakht S.High-temperature functional analysis of bitumen modified with composite of nano-SiO2 and styrene butadiene styrene polymer[J].Liquid Fuels Technology,2016,34(13):1195-1203.
[8] 刘红瑛,张铭铭,黄凌辉,等.多聚磷酸复合SBS改性沥青流变性能及抗老化特性[J].东南大学学报(自然科学版),2016,46(6):1290-1295.
[9] 冯慧敏,徐文远,计伟帅.基于动态剪切流变试验的硅粉/SBS复合改性沥青性能分析[J].广西大学学报(自然科学版),2019,44(1):191-196.
[10] 王岚,王宇,邢永明,等.短期老化对橡胶粉改性沥青流变性能的影响[J].材料工程,2016,44(1):54-59.
[11] 董刚.多聚磷酸及多聚磷酸/聚合物复合改性沥青的性能和机理分析[D].西安:长安大学,2018.
