Article Dans Une Revue International Journal of Pavement Engineering Année : 2024

Examining the efficacy of promising antioxidants to mitigate asphalt binder oxidation: insights from a worldwide interlaboratory investigation

Johannes Mirwald
Yudi Wang
  • Fonction : Auteur
Ramez Hajj
  • Fonction : Auteur
Meng Guo
  • Fonction : Auteur
Meichen Liang
  • Fonction : Auteur
Ruxin Jing
  • Fonction : Auteur
Aikaterini Varveri
Yuan Zhang
Xiong Xu
  • Fonction : Auteur
Zhen Leng
Danning Li
  • Fonction : Auteur
William Villamil
  • Fonction : Auteur
Sandra Weigel
  • Fonction : Auteur
Giulia Tarsi
  • Fonction : Auteur
Alexandros Margaritis
  • Fonction : Auteur
Haopeng Wang
  • Fonction : Auteur
Yongping Hu
Gordon Airey
  • Fonction : Auteur
Amit Bhasin

Résumé

Oxidative aging induces significant stiffening of asphalt binders that leads to a pronounced reduction in the overall durability of asphalt pavements. The strategic implementation of antioxidant additives provides a potential solution to alleviate this issue. This work presents results from the second phase of the global consortium for antioxidants research aimed at investigating the effectiveness of potential antioxidants in increasing the durability of asphalt binders. Sixteen laboratories around the world participated in this effort and a total of 28 binders from diverse geographical regions were tested. Two promising antioxidants, namely zinc diethyldithiocarbamate (ZDC) and kraft lignin were evaluated in this phase and blended with the binders at specific proportions. Subsequently, a comprehensive investigation was conducted to assess rheological characteristics and chemical properties of the various blends, utilising Dynamic Shear Rheometer (DSR) measurements and Fourier Transform Infrared (FTIR) Spectroscopy. The findings indicate that additives such as ZDC hold considerable promise as an effective antioxidant, particularly when considering a wide diversity of binders. In general, its incorporation does not compromise the rutting performance of the binders and significantly improves fatigue performance. Therefore, research efforts should be focused on exploring additional facets to assess its practical applicability in field.

Dates et versions

hal-04909062 , version 1 (23-01-2025)

Identifiants

Citer

Dheeraj Adwani, Georgios Pipintakos, Johannes Mirwald, Yudi Wang, Ramez Hajj, et al.. Examining the efficacy of promising antioxidants to mitigate asphalt binder oxidation: insights from a worldwide interlaboratory investigation. International Journal of Pavement Engineering, 2024, 25 (1), pp.2332363. ⟨10.1080/10298436.2024.2332363⟩. ⟨hal-04909062⟩
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