A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Quasi-Microstructure Analysis of Asphalt Mixtures Containing Reclaimed Asphalt Pavement
AbstractThe nonuniform distribution of reclaimed asphalt pavement (RAP) in asphalt mixtures can affect stiffness values of RAP mixtures and their field performance in asphalt overlays. This study develops a method that uses finite-element (FE) analysis of the quasi-microstructure of RAP mixtures to predict their stiffness values and evaluate the performance of the asphalt overlays that contain RAP mixtures. Laboratory experiments are conducted to determine the dynamic modulus values of the corresponding RAP mixtures, which are compared with the predicted stiffness values. The results show that the proposed quasi-microstructure analysis is a reliable approach to predict stiffness values of RAP mixtures and can investigate the direct correlation between RAP distributions and the stiffness values under indirect tensile (IDT) test quantitatively. The quasi-microstructure analysis of RAP mixtures’ overlays shows that the addition of RAP in asphalt mixtures can improve the rutting resistance but significantly increases the cracking potential. The proposed methodology offers a promising and cost-efficient approach to analyze and design RAP mixtures.
Quasi-Microstructure Analysis of Asphalt Mixtures Containing Reclaimed Asphalt Pavement
AbstractThe nonuniform distribution of reclaimed asphalt pavement (RAP) in asphalt mixtures can affect stiffness values of RAP mixtures and their field performance in asphalt overlays. This study develops a method that uses finite-element (FE) analysis of the quasi-microstructure of RAP mixtures to predict their stiffness values and evaluate the performance of the asphalt overlays that contain RAP mixtures. Laboratory experiments are conducted to determine the dynamic modulus values of the corresponding RAP mixtures, which are compared with the predicted stiffness values. The results show that the proposed quasi-microstructure analysis is a reliable approach to predict stiffness values of RAP mixtures and can investigate the direct correlation between RAP distributions and the stiffness values under indirect tensile (IDT) test quantitatively. The quasi-microstructure analysis of RAP mixtures’ overlays shows that the addition of RAP in asphalt mixtures can improve the rutting resistance but significantly increases the cracking potential. The proposed methodology offers a promising and cost-efficient approach to analyze and design RAP mixtures.
Quasi-Microstructure Analysis of Asphalt Mixtures Containing Reclaimed Asphalt Pavement
Zhang, Kun (author) / Muhunthan, Balasingam
2017
Article (Journal)
English
BKL:
56.45
Baustoffkunde
Local classification TIB:
535/6520/6525/xxxx
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