Evaluation of sustainable technologies that upgrade the binder performance grade in asphalt pavement construction
Evaluation of sustainable technologies that upgrade the binder performance grade in asphalt pavement construction
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DOI：
10.1016/j.matdes.2016.01.065
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发表时间：
2016-04
影响因子：
8.4
通讯作者：
A. Jamshidi;M. O. Hamzah;Kiyofumi Kurumisawa;T. Nawa;B. Samali
中科院分区：
文献类型：
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作者：
A. Jamshidi;M. O. Hamzah;Kiyofumi Kurumisawa;T. Nawa;B. Samali
有许多技术可以生产可持续的沥青路面，这些技术可能会影响路面寿命的各个阶段。因此，很难选择满足所有工程要求的最合适的技术，特别是在产生相同输出的技术中。在这项研究中，PG 64沥青结合料（基础结合料）升级为PG 70（目标结合料），通过纳入两种不同的可持续方法：（1）合成蜡和（2）回收沥青路面（RAP）的回收结合料。根据材料的工程性能和混合料生产的可持续性特征，评价了不同改性方法的效果。结果表明，改性后的沥青混合料与目标沥青混合料性能等级相同，但RAP的掺入减少了原材料加工阶段的环境污染物，而石蜡的使用减少了沥青混合料生产过程中的污染物。因此，清洁沥青路面生产的可持续技术类型的选择在很大程度上取决于路面施工中所需的修改阶段。还提出了一些方案和一种新的方法，作为指导选择适当的可持续的方法的基础上的粘合剂和工程性能。
There are many technologies to produce sustainable asphalt pavements that may affect various phases of pavement life. Therefore, it is difficult to choose the most appropriate technology that addresses all the engineering requirements, especially in the technologies produce the identical outputs. In this study, a PG64 asphalt binder (base binder) was upgraded to PG70 (target binder) through incorporation of two different sustainable approaches: (1) synthetic wax and (2) recovered binder from reclaimed asphalt pavement (RAP). The effects of the different modification methods were evaluated in terms of the engineering properties of materials and the sustainability features of mix production. The results indicated the modified binder (as outputs) have the same performance grade as the target binder, but the incorporation of RAP reduces the environmental pollutants at the stage of raw material processing, while the use of the wax decreases the pollutants during asphalt mix production. Consequently, the selection of the type of sustainable technology for production of cleaner asphalt pavement depends significantly on the stage desired to be modified in the pavement construction. A few scenarios and a new method are also proposed as a guide to selection of the appropriate sustainable approaches based on the binder and engineering properties.