TY - JOUR
T1 - Exploring the impact of humidity and water on bituminous binder aging
T2 - a multivariate analysis approach (TI CAB)
AU - Khalighi, Sadaf
AU - Erkens, Sandra
AU - Varveri, Aikaterini
PY - 2024
Y1 - 2024
N2 - Bituminous binders naturally age, affecting the properties and performance of asphalt pavements. The physical and chemical characteristics of binders are influenced by environmental factors, leading to a decline in their performance and durability. Therefore, it is essential to understand the mechanisms of binder environmental aging to design more resilient and long-lasting asphalt pavements. This study examines the effects of temperature, liquid, and vapor water on binder aging to develop more durable pavements. Aging was induced at three temperatures (60°C, 70°C, 85°C) under dry air, 90% relative humidity, and water immersion conditions. Field-aged samples were also analyzed to compare with laboratory-aged samples. Fourier-transform infrared spectroscopy (FTIR) and dynamic shear rheometer (DSR) were used to assess chemical and rheological changes. To assess the similarity between samples and identify the lab aging protocol closest to field aging, Hierarchical Cluster Analysis (HCA) was employed for data analysis.
AB - Bituminous binders naturally age, affecting the properties and performance of asphalt pavements. The physical and chemical characteristics of binders are influenced by environmental factors, leading to a decline in their performance and durability. Therefore, it is essential to understand the mechanisms of binder environmental aging to design more resilient and long-lasting asphalt pavements. This study examines the effects of temperature, liquid, and vapor water on binder aging to develop more durable pavements. Aging was induced at three temperatures (60°C, 70°C, 85°C) under dry air, 90% relative humidity, and water immersion conditions. Field-aged samples were also analyzed to compare with laboratory-aged samples. Fourier-transform infrared spectroscopy (FTIR) and dynamic shear rheometer (DSR) were used to assess chemical and rheological changes. To assess the similarity between samples and identify the lab aging protocol closest to field aging, Hierarchical Cluster Analysis (HCA) was employed for data analysis.
KW - aqueous-thermal aging
KW - DSR
KW - FTIR
KW - HCA
KW - hygrothermal aging
KW - Thermo-oxidative aging
UR - http://www.scopus.com/inward/record.url?scp=85196069379&partnerID=8YFLogxK
U2 - 10.1080/14680629.2024.2364189
DO - 10.1080/14680629.2024.2364189
M3 - Article
AN - SCOPUS:85196069379
SN - 1468-0629
JO - Road Materials and Pavement Design
JF - Road Materials and Pavement Design
ER -