The hydro-mechanical interaction in novel polyurethane-bound pervious pavement by considering the saturation states in unbound granular base course

International Journal of Pavement Engineering, vol. 23, pp. 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.

Authors 7

1. Guoyang Lu Aachen Institute of Highway Engineering

   Hong Kong Polytechnic University · RWTH Aachen University

   Affiliation as printed

   Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong

   Institute of Highway Engineering, RWTH Aachen University, Aachen, Germany

2. Haopeng Wang

   Delft University of Technology

   Affiliation as printed

   Section of Pavement Engineering, Faculty of Civil Engineering & Geosciences, Delft University of Technology, Delft, The Netherlands

3. Yuqing Zhang corresponding

   Aston University

   Affiliation as printed

   Engineering Systems & Management Group (ESM), Aston University, Birmingham, UK

4. Pengfei Liu Aachen Institute of Highway Engineering

   RWTH Aachen University

   Affiliation as printed

   Institute of Highway Engineering, RWTH Aachen University, Aachen, Germany

5. Dawei Wang corresponding Aachen Institute of Highway Engineering

   Harbin Institute of Technology · RWTH Aachen University

   Affiliation as printed

   Institute of Highway Engineering, RWTH Aachen University, Aachen, Germany

   School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, People’s Republic of China

   School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, People's Republic of China

6. Markus Oeser Aachen Institute of Highway Engineering

   RWTH Aachen University

   Affiliation as printed

   Institute of Highway Engineering, RWTH Aachen University, Aachen, Germany

7. Jürgen Grabe

   Hamburg University of Technology

   Affiliation as printed

   Institute of Geotechnical Engineering and Construction Management, Hamburg University of Technology, Hamburg, Germany