Print Email Facebook Twitter Understanding the Stiffness of Porous Asphalt Mixture through Micromechanics Title Understanding the Stiffness of Porous Asphalt Mixture through Micromechanics Author Zhang, H. (TU Delft Pavement Engineering) Anupam, K. (TU Delft Pavement Engineering) Scarpas, Athanasios (TU Delft Pavement Engineering; Khalifa University of Science and Technology) Kasbergen, C. (TU Delft Pavement Engineering) Erkens, S. (TU Delft Pavement Engineering) Date 2021 Abstract Micromechanics, which can be used to relate the properties of a composite to the properties of individual constituents, is considered a good approach to understanding the fundamental mechanisms behind the behavior of asphalt materials. Compared with the semi-empirical and numerical micromechanical models, analytical micromechanical models do not need calibration factors. In addition, they can provide analytical solutions on the basis of a series of assumptions. Using these models, researchers have separated the effects of different stiffening mechanisms (i.e., the volume-filling reinforcement, the physicochemical reinforcement, and the particle-contact reinforcement) for mastic. However, similar research work has not been conducted for asphalt mixtures and, moreover, the characteristics of the particle-contact reinforcement have not been deeply analyzed by researchers. Therefore, this paper aims to understand the stiffness of asphalt mixture through micromechanics. The focus of this study was on porous asphalt mixture where particle-contact reinforcement plays an important role in its behavior. The stiffening effects of different mechanisms were separated using analytical micromechanical models. The effects of temperature/frequency and the properties of the matrix phase on the stiffening effect of the particle-contact reinforcement were analyzed. To reference this document use: http://resolver.tudelft.nl/uuid:a3b90f68-1bc9-42ac-91a8-41ed3edbe1d9 DOI https://doi.org/10.1177/0361198121999060 ISSN 0361-1981 Source Transportation Research Record, 2675 (8), 528-537 Part of collection Institutional Repository Document type journal article Rights © 2021 H. Zhang, K. Anupam, Athanasios Scarpas, C. Kasbergen, S. Erkens Files PDF 0361198121999060.pdf 2.14 MB Close viewer /islandora/object/uuid:a3b90f68-1bc9-42ac-91a8-41ed3edbe1d9/datastream/OBJ/view