Title: A computational study of the effect of structural anisotropy of porous asphalt on hydraulic conductivity
Authors : Gruber, Ivan
Zinovik, Igor N.
Holzer, Lorenz
Flisch, Alexander
Poulikakos, Lily D.
Published in : Construction and Building Materials
Volume(Issue) : 36
Pages : 66
Pages to: 77
Publisher / Ed. Institution : Elsevier BV
Issue Date: Nov-2012
Language : Englisch / English
Subject (DDC) : 620.11: Werkstoffe
Abstract: The estimation of hydraulic conductivity is important for design and quality assessment of porous asphalt surface courses which directs rain runoff to the drainage system. Structural anisotropy which is induced from compaction may have a strong impact on permeability and flow residence time. Numerical modeling of flow in the pore network is presented based on actual pore geometry reconstructed employing X-ray computer tomography. The results are used to estimate the Darcy’s permeability, Forchheimer resistance and formation of ice in the pores, showing that hydraulic conductivity is highly anisotropic and may vary by a factor of 2 depending on the flow direction.
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Publication type: Beitrag in wissenschaftlicher Zeitschrift / Article in scientific Journal
DOI : 10.1016/j.conbuildmat.2012.04.094
ISSN: 0950-0618
URI: https://digitalcollection.zhaw.ch/handle/11475/2205
Appears in Collections:Publikationen School of Engineering

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