东南大学学报（自然科学版）2016，Vol.46Issue(6)：1290-1295,6.DOI:10.3969/j.issn.1001-0505.2016.06.030
多聚磷酸复合SBS改性沥青流变性能及抗老化特性
Rheological and anti-aging properties of polyphosphoric acid composite styrene butadiene styrene modified asphalt
摘要
Abstract
Based on dynamic shear rheological and bending beam rheological tests,the rheological behaviors of PPA (polyphosphoric acid)composite SBS (styrene butadiene styrene)modified as-phalt at high and low temperatures were comprehensively studied,and compared with the rheological property of sulfur composite SBS modified asphalt.The functional groups of original asphalt and the asphalt after the rotating thin film oven heating test and the pressure aging vessel test were analyzed by the Fourier transform infrared spectroscopy.The results show that the resistance performance of asphalt with appropriate PPA content can be increased at high temperatures.Compared with sulfur composite SBS modified asphalt,PPA composite SBS modified asphalt has super resistance deforma-tion at high temperatures,while it has relative weak anti-cracking property at low temperature.With the increase of the content of SBS polymer,the modified asphalt has better anti-cracking property at low temperatures.After short and long term aging,the change of sulfoxide index of PPA composite SBS modified asphalt is very small,and the anti-aging property of PPA composite SBS modified as-phalt is improved.关键词
道路工程/多聚磷酸/改性沥青/流变性能/抗老化特性Key words
road engineering/polyphosphoric acid/modified asphalt/rheological performance/an-ti-aging property分类
交通工程引用本文复制引用
刘红瑛,张铭铭,黄凌辉,常睿,郝培文..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):1290-1295,6.基金项目
国家自然科学基金资助项目（51278060）． （）
