Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/97465
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Title: The hydro-mechanical interaction in novel polyurethane-bound pervious pavement by considering the saturation states in unbound granular base course
Authors: Lu, G 
Wang, H
Zhang, Y
Liu, P
Wang, D
Oeser, M
Grabe, J
Issue Date: 2022
Source: International journal of pavement engineering, 2022, v. 23, no. 11, p. 3677-3690
Abstract: The pore-water pressure generated by intermittent dynamic vehicle loading under various saturation states is recognized as a critical factor influencing the behaviour of permeable pavement structures, especially the behaviour of UGB layer. However, the underlying mechanisms of hydro-mechanical interaction in the UGB layer and the influence on the pavement structure are still unclear. This study aims to characterize the changes in dynamic response in permeable pavement structures under various saturation conditions by considering the hydro-mechanical interaction within the UGB layer. To achieve this objective, a full-scale test track with a PUPM wearing course was constructed. Pressures and water distribution were characterized by embedded sensors within different layers of the test track when subjected to the accelerating pavement test. Based on the coupled SAME model, the water distribution and the dynamic response of UGB in the rainfall events were both characterised and solved by FEM. The results predicted by the proposed SAME model correspond to the field measurements, and the influence of the water content on the resilient modulus distribution within the UGB layer was then estimated. Based on the predictions for the stress state of the UGB layer, the sensitivity analysis was also proposed.
Keywords: Hydro-mechanical interaction
Matric suction
Polyurethane bound pervious material (PUPM)
Unsaturated flow
Water content
Publisher: Taylor & Francis
Journal: International journal of pavement engineering 
ISSN: 1029-8436
EISSN: 1477-268X
DOI: 10.1080/10298436.2021.1915490
Rights: © 2021 Informa UK Limited, trading as Taylor & Francis Group
This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Pavement Engineering on 5 May 2021 (Published online), available at: http://www.tandfonline.com/10.1080/10298436.2021.1915490.
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