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An analysis of theoretical and empirical relationships between two asphalt binder cracking parameters
Road Materials and Pavement Design ( IF 3.7 ) Pub Date : 2021-04-05 , DOI: 10.1080/14680629.2021.1906734
Ramez Hajj 1 , Scott Young 1
Affiliation  

Since the adoption of the Performance Grading criteria, researchers and agencies have dedicated efforts toward supplementing the existing parameters with better indicators of asphalt binder cracking susceptibility. This study seeks to evaluate the relationship between ΔTc and the Glover-Rowe parameter, two such parameters. This study contains three parts: (i) a fundamental examination of the relationship between the indicators, (ii) an empirical study of theseparameters based on an array of data from the existing literature, and (iii) an examination of the basic principles underlying the mechanisms of ductility and nonlinearity in polymer-modified asphalt related to these parameters. The results indicate that the parameters are not fundamentally related, but have some relationship to cracking, reinforcing the importance of considering time and temperature. Additionally, the parameters do diverge in their relationship. Finally, fundamental properties of polymer-modified asphalts reveal the need for considering nonlinear and damaged binder behaviour, and reexamining binder ductility’s importance.



中文翻译:

两种沥青结合料开裂参数之间的理论和经验关系分析

自从采用性能分级标准以来,研究人员和机构一直致力于用更好的沥青粘合剂开裂敏感性指标来补充现有参数。这项研究旨在评估之间的关系ΔŤC和Glover-Rowe参数,这两个参数。这项研究包括三个部分:(i)对指标之间关系的基础研究;(ii)基于现有文献中的一系列数据对这些参数进行实证研究;以及(iii)对构成这些指标的基本原理的研究聚合物改性沥青延性和非线性的机理与这些参数有关。结果表明,这些参数并不是根本相关的,但与裂纹有一定关系,从而增强了考虑时间和温度的重要性。此外,参数之间的关系确实有所不同。最后,聚合物改性沥青的基本性能表明需要考虑非线性和受损的粘结剂性能,并重新检查粘结剂延展性的重要性。

更新日期:2021-05-05
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