Print Email Facebook Twitter Investigation of the moisture damage and the erosion depth on asphalt Title Investigation of the moisture damage and the erosion depth on asphalt Author Zou, Yingxue (Wuhan University of Technology) Xu, Haiqin (Wuhan University of Technology) Xu, S. (TU Delft Materials and Environment; Wuhan University of Technology) Chen, Anqi (Wuhan University of Technology) Wu, Shaopeng (Wuhan University of Technology) Amirkhanian, Serji (University of South Alabama) Wan, Pei (Wuhan University of Technology) Gao, Xiang (Wuhan University of Technology) Date 2023 Abstract Moisture erosion is one of the key factors leading to asphalt pavement damage, and the erosion depth indicates the moisture damage level but it is usually neglected. In order to study the moisture erosion and the erosion depth, this study characterized the chemical structure, rheological property and adhesion property of asphalt at different depths after immersion for different periods. To further explore the diffusion mechanism of eroded asphalt, a Log-log numerical model was established based on the Fick's second law to calculate the diffusion coefficient throughout the depth. The results indicate that it takes just four hours for water to penetrate a 25 μm asphalt film. The relation between erosion depth and immersion period presents three stages, and the process can be fitted with a polynomial model. At the macroscopic level, there is a lag between the changes in adhesion property with chemical structure and rheological property. Additionally, the periodicity of moisture erosion process was verified by the calculation of diffusion factor. In summary, the diffusion mechanism of eroded asphalt by moisture can provide a theoretical basis for the development of laboratory moisture erosion test specification, thus avoiding the waste of raw materials. Subject Adhesion propertyAsphaltDiffusion coefficientErosion depthMoisture damageRheological property To reference this document use: http://resolver.tudelft.nl/uuid:e682fdfb-27b3-49d8-adee-b50695fd17db DOI https://doi.org/10.1016/j.conbuildmat.2023.130503 Embargo date 2023-08-02 ISSN 0950-0618 Source Construction and Building Materials, 369 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Yingxue Zou, Haiqin Xu, S. Xu, Anqi Chen, Shaopeng Wu, Serji Amirkhanian, Pei Wan, Xiang Gao Files PDF 1_s2.0_S0950061823002143_main.pdf 2.36 MB Close viewer /islandora/object/uuid:e682fdfb-27b3-49d8-adee-b50695fd17db/datastream/OBJ/view