The research for high‐elastic modified asphalt
The research for high‐elastic modified asphalt
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DOI：
10.1002/app.42132
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发表时间：
2015-07
影响因子：
3
通讯作者：
Feng Zhang;Changbin Hu
中科院分区：
文献类型：
--
作者：
Feng Zhang;Changbin Hu
在基质沥青中加入丁苯橡胶(SBS)、增塑剂和交联剂，制得高弹性改性沥青。通过物理和流变性试验，研究了各改性剂在沥青中的作用和比例。研究发现，SBS主要决定了HEM沥青的高温性能。增塑剂(邻苯二甲酸二辛酯)对改善材料的低温柔韧性和弹性回复率有很大的帮助。交联剂(硫磺)是保持高温稳定性所必需的。本研究采用傅里叶变换红外光谱、氢核磁共振分析和显微镜观察等手段，进一步研究了老化前后改性沥青的结构特征。研究表明，老化对改性沥青的结构特性有明显影响。VC2015威利期刊公司J.应用。波兰姆。SCI。2015年，132.42132。
High-elastic modified (HEM) asphalt was prepared by the addition of styrene-butadiene-styrene (SBS), plasticizer, and crosslinker to base asphalt. The effect and proportion of each modifier in asphalt were studied using physical and rheological tests. It was found that SBS determined the high-temperature performance of HEM asphalt mainly. Plasticizer (dioctyl phthalate) is very help- ful in improving the low-temperature flexibility and elastic recovery. Crosslinker (sulfur) is necessary in maintaining high- temperature stability. In this study, Fourier transform infrared, hydrogen nuclear magnetic resonance analysis, and microscopy obser- vation were used to investigate the structural characteristics of modified asphalts further before and after ageing. The research showed the structural characteristics of modified asphalt were influenced evidently by ageing. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42132.