Show simple item record

dc.contributor.authorRen, X.W.
dc.contributor.authorSantamarina, Carlos
dc.date.accessioned2017-12-14T12:34:05Z
dc.date.available2017-12-14T12:34:05Z
dc.date.issued2017-12-06
dc.identifier.citationRen XW, Santamarina JC (2018) The hydraulic conductivity of sediments: A pore size perspective. Engineering Geology 233: 48–54. Available: http://dx.doi.org/10.1016/j.enggeo.2017.11.022.
dc.identifier.issn0013-7952
dc.identifier.doi10.1016/j.enggeo.2017.11.022
dc.identifier.urihttp://hdl.handle.net/10754/626382
dc.description.abstractThis article presents an analysis of previously published hydraulic conductivity data for a wide range of sediments. All soils exhibit a prevalent power trend between the hydraulic conductivity and void ratio. Data trends span 12 orders of magnitude in hydraulic conductivity and collapse onto a single narrow trend when the hydraulic conductivity data are plotted versus the mean pore size, estimated using void ratio and specific surface area measurements. The sensitivity of hydraulic conductivity to changes in the void ratio is higher than the theoretical value due to two concurrent phenomena: 1) percolating large pores are responsible for most of the flow, and 2) the larger pores close first during compaction. The prediction of hydraulic conductivity based on macroscale index parameters in this and similar previous studies has reached an asymptote in the range of kmeas/5≤kpredict≤5kmeas. The remaining uncertainty underscores the important role of underlying sediment characteristics such as pore size distribution, shape, and connectivity that are not measured with index properties. Furthermore, the anisotropy in hydraulic conductivity cannot be recovered from scalar parameters such as index properties. Overall, results highlight the robustness of the physics inspired data scrutiny based Hagen–Poiseuille and Kozeny-Carman analyses.
dc.description.sponsorshipSupport for this research was provided by the Fundamental Research Funds for the Central Universities, China University of Geosciences-Wuhan (No. CUG160701, CUG160813), the National Natural Science Foundation of China (51708526), the USA Department of Energy, and KAUST's Endowment. The authors are grateful to Man Chap Fu Jeff and G.E. Abelskamp.
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0013795217304866
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Engineering Geology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Engineering Geology, 6 December 2017. DOI: 10.1016/j.enggeo.2017.11.022. © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectHydraulic conductivity
dc.subjectSediments
dc.subjectSpecific surface area
dc.subjectPore size
dc.subjectVoid ratio
dc.titleThe hydraulic conductivity of sediments: A pore size perspective
dc.typeArticle
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentEnergy Resources and Petroleum Engineering
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentUpstream Petroleum Engineering Research Center (UPERC)
dc.identifier.journalEngineering Geology
dc.eprint.versionPost-print
dc.contributor.institutionFaculty of Engineering, China University of Geosciences, Wuhan 430074, China
kaust.personSantamarina, Carlos
dc.date.published-online2017-12-06
dc.date.published-print2018-01


Files in this item

Thumbnail
Name:
1-s2.0-S0013795217304866-main.pdf
Size:
1.332Mb
Format:
PDF
Description:
Accepted Manuscript
Embargo End Date:
2019-12-06

This item appears in the following Collection(s)

Show simple item record