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  4. Numerical analysis for the influence of saturation on the base course of permeable pavement with a novel polyurethane binder
 
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Numerical analysis for the influence of saturation on the base course of permeable pavement with a novel polyurethane binder

Publikationstyp
Journal Article
Date Issued
2020-04-20
Sprache
English
Author(s)
Lu, Guoyang  
Liu, Pengfei  
Törzs, Tom  orcid-logo
Wang, Dawei  
Oeser, Markus  
Grabe, Jürgen  
Institut
Geotechnik und Baubetrieb B-5  
TORE-URI
http://hdl.handle.net/11420/4599
Journal
Construction and building materials  
Volume
240
Article Number
117930
Citation
Construction and Building Materials (240): 117930 (2020-04-20)
Publisher DOI
10.1016/j.conbuildmat.2019.117930
Scopus ID
2-s2.0-85076959072
Permeable pavements represent an effective approach to optimize the conventional sealed pavement infrastructure. Compared to sealed pavement structures, the porous pavement structure allows fluids to pass through it freely, reducing and controlling runoff in the surrounding area. The stress state of this pavement system under different saturation conditions is one of the most important challenges for the pavement design. This study aims to develop a modulus-reduction method for the pavement material under different saturation conditions by considering hydro-mechanical interaction. To achieve this, a full-scale permeable test track was constructed in this study. A falling weight deflectometer (FWD) was used to measure the deflection of the test track at different saturation states. Using the back-calculated elastic parameters, tire-pavement interaction models were created to conduct finite element method (FEM) simulations of the stress state of the test track subjected to the loads from Accelerated Pavement Testing (APT). The results show that the hydro-mechanical properties of the test track are significantly affected by the water content. As a result, the current design algorithm of fully permeable pavements should consider the effects of saturation to allow for improved designs of fully permeable pavements.
Subjects
Finite element method
Hydro-mechanical model
Pore-water pressure
Porous permeable pavement
Unsaturated state
Funding(s)
Hydrauilisch-mechanische Wechselwirkung in wasserdurchlässigen Fahrbahnaufbauten unter Berücksichtigung teilgesättigter Zustände  
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