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Fatigue performance of asphalt pavements with highly polymer-modified asphalt binders
Road Materials and Pavement Design ( IF 3.4 ) Pub Date : 2021-04-12 , DOI: 10.1080/14680629.2021.1905701
Adam Zofka 1 , Krzysztof Błażejowski 2 , Przemyslaw Ostrowski 2
Affiliation  

The paper briefly discusses traditional asphalt pavements designing methods of designing of asphalt pavements developed in the second half of the 20th century. In comparison, it presents the assumptions and derivations of a modern method based on the simplified viscoelastic continuum damage (S-VECD) model together with its necessary input data. In the second part of the article, structures for two different traffic load categories - heavy traffic and extreme traffic - were analysed. For each traffic load categories two types of constructions were compared - reference construction - made with typical neat asphalt binder in base course and construction with anti-fatigue base layer made with highly polymer modified asphalt binder (HiMA). Fatigue performance of each structure was estimated using two methods - Asphalt Institute method and S-VECD method. Results showed that approach using the Asphalt Institute equations is correct for unmodified asphalt materials, while for the asphalt mixtures with a high elastomer content it generates rather doubtful results. The example presented that it is possible the possibility of to captureing the field performance of HiMA with the S-VECD method.



中文翻译:

高度聚合物改性沥青粘合剂的沥青路面疲劳性能

本文简要讨论了20世纪下半叶发展起来的传统沥青路面设计方法。相比之下,它提出了基于简化的粘弹性连续体损伤(S-VECD)模型及其必要输入数据的现代方法的假设和派生。在本文的第二部分中,分析了两种不同的交通负荷类别(繁忙交通和极端交通)的结构。对于每种交通负荷类别,比较了两种类型的结构-参考结构-在基础层中使用典型的纯净沥青粘合剂进行施工,而在抗疲劳基础层上采用高聚合物改性沥青粘合剂(HiMA)进行施工。使用两种方法(沥青研究所方法和S-VECD方法)评估每个结构的疲劳性能。结果表明,使用沥青学会方程式的方法对于未改性的沥青材料是正确的,而对于具有高弹性体含量的沥青混合料,则产生相当可疑的结果。该示例表明,有可能利用S-VECD方法捕获HiMA的现场性能。

更新日期:2021-05-05
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