Physical and rheological properties of asphalt binders containing various antiaging agents
Physical and rheological properties of asphalt binders containing various antiaging agents
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DOI：
10.1016/j.fuel.2012.02.028
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发表时间：
2012-07-01
期刊：
影响因子：
7.4
通讯作者：
Chen, Shuanfa
中科院分区：
文献类型：
--
作者：
Cong, Peiliang;Wang, Jie;Chen, Shuanfa
模拟路面中沥青结合料使用寿命期间发生的短期和长期老化的实验室方法是标准化的，并且忽略了紫外线（UV）辐射的影响。在沥青路面性能研究中必须考虑沥青结合料的热老化和紫外老化，特别是在太阳辐射强度高的地理区域。研究了抗氧剂和紫外线吸收剂对沥青结合料性能的影响。试验结果表明，在沥青物理性能无明显变化的情况下，抗氧剂与紫外线吸收剂复配使用，可显著提高沥青结合料的抗老化性能。老化试验结果表明，沥青/抗氧剂共混物具有较好的耐热老化性能，沥青/紫外线吸收剂共混物具有较好的光稳定性。但要制备出具有更好物理性能和抗老化性能的沥青结合料，必须选用含抗氧剂和紫外线吸收剂的复合抗老化剂。抗老化剂对沥青/抗老化剂共混物的贮存稳定性影响较小，经高温长期贮存后仍能用于路面。(C)2012爱思唯尔有限公司保留所有权利。
Laboratory methods to simulate the short-term and long-term aging occurring during the service life of asphalt binder in a pavement are standardized, and the influence of ultraviolet (UV) radiations is ignored. The thermal and UV aging of asphalt binders must be considered in the study of the performance of asphalt pavement, especially in geographical regions where high solar radiation intensity occurs. The effects of antioxidants and UV absorbers on the properties of asphalt binders were studied in this study. Experimental results indicated that the improvement of the antiaging resistance of asphalt binder is noticeable when compound antiaging agents containing antioxidants and UV absorbers, at which the physical properties of asphalt is not change remarkably. The results of aging indicated that the asphalt/antioxidants blend has good heat aging resistance, and asphalt/UV absorbers blends have good photostability. However, to prepare asphalt binders with better physical and antiaging resistance, the compound antiaging agents containing antioxidants and UV absorbers must be selected. The results also indicated that the effects of antiaging agents on storage stability of asphalt/antiaging agents blend are little and can be used in pavement after long time storage at high temperature. (C) 2012 Elsevier Ltd. All rights reserved.