摘要
为了研究沥青在自然环境下的老化反应,研发了环境温度箱,模拟了光、热、氧及水共同作用对沥青的老化,运用了红外光谱分析法研究了基质沥青、SBS改性沥青及PPA改性沥青在不同老化时间后的分子结构组分变化,并利用羰基指数对沥青的老化程度评价。研究结果发现与基质沥青相比,丁二烯-苯乙烯共聚物SBS改性沥青和多聚磷酸PPA改性沥青具有较高的抗老化分解。
In order to study the aging response of asphalt in the natural environment,this paper developed the environment temperature box to simulate the light,heat,oxygen and water interaction of asphalt aging,using the infrared spectra of matrix asphalt,SBS modified asphalt and PPA modified asphalt composition changes in the molecular structure of different aging time analysis method,and the use of carbonyl index on aging degree of asphalt. Results showed that compared with the matrix asphalt,butadiene styrene copolymer of SBS modified asphalt and poly phosphoric acid of PPA modified asphalt aging decomposition with higher.
出处
《公路工程》
北大核心
2014年第5期307-310,共4页
Highway Engineering
关键词
沥青
老化
红外光谱
羰基指数
asphalt
aging
infrared spectra
carbonyl index
