Thermomechanical Properties of Several Polymer Modified Asphalts
Thermomechanical Properties of Several Polymer Modified Asphalts
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DOI：
10.1515/arh-2000-0012
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发表时间：
2000-08
期刊：
影响因子：
1.8
通讯作者：
L. Zanzotto;J. Stastna;O. Vacin
中科院分区：
文献类型：
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作者：
L. Zanzotto;J. Stastna;O. Vacin
许多道路和高速公路沥青铺装的昂贵的恶化产生了越来越多的兴趣聚合物改性沥青（PMA）。虽然沥青只占沥青路面混合料的一小部分，但人们认为它对沥青路面的热力学性能有显著影响。目前，对聚合物改性沥青的测试类型和规范还没有达成共识；然而，很明显，这些规范应该基于这些系统的流变测试。沥青作为一种粘弹性材料，通常以其动态材料特性为特征。本文讨论了在PMA系统中使用修正损失正切函数的优点。将沥青铺装工业中常用的三种聚合物改性剂SBS、EVA和EGA与基层沥青进行共混，并对其进行了研究。
Abstract Costly deterioration of many roads and highways paved with asphalt generates a growing interest in polymer modified asphalts (PMA). Although asphalt represents only a fraction of asphalt paving mix, it is believed that it has a significant effect on the thermomechanical properties of asphalt pavements. Currently there is no consensus on the type of tests and specifications for polymer modified asphalts; however, it is clear that such specifications should be based on rheological testing of these systems. As a viscoelastic material asphalt is usually characterized by its dynamic material functions. An advantage of the use of modified loss tangent function in PMA systems is discussed in this contribution. Three polymer modifiers (SBS, EVA and EGA) commonly used in the asphalt paving industry were blended with base asphalt and various relaxations in the base, and its blends are studied here.