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Title:Determination of the fabric alteration of marine clays
Authors:ID Gumaste, Suchit (Author)
ID Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru (Copyright holder)
Files:.pdf Acta_geotechnica_Slovenica_2014_Gumaste_Determination_of_the_fabric_alteration_of_marine_clays.pdf (399,08 KB)
MD5: 5493F14EB2D1A1992720E58C52C17AC6
PID: 20.500.12556/dkum/4834cc0f-cbd8-43c4-9dc1-cce54b267dcf
 
URL http://fgserver3.fg.um.si/journal-ags/2014-2/article-2.asp
 
Language:English
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Abstract:This paper presents details of investigations that were conducted to determine the fabric (i.e., the arrangement of soil grains and pores) of undisturbed marine clay samples that were retrieved from 5 m to 65 m below the seabed. Impedance Spectroscopy (IS), which is a non-destructive and non-invasive technique, was employed to determine the electrical conductivities of the marine clay samples in their longitudinal and transverse planes of sedimentation. These results were employed to define the extent of the fabric anisotropy in terms of an anisotropy coefficient, Ae, as a function of depth. In addition, Scanning Electron Microscopy (SEM) and Mercury Intrusion Porosimetry (MIP) were employed to study the fabric and pore-size distribution of these samples, respectively. Based on these investigations it has been observed that Ae increases with sampling depth, which is indicative of the alteration from flocculated fabric, at shallower depths, to the dispersed fabric, at deeper depths. The study highlights the importance and usefulness of the anisotropy coefficient, Ae, for determining the alteration in the fabric of marine clays, due to self-weight consolidation.
Keywords:marine clays, anisotropy, laboratory tests
Publication status:Published
Publication version:Version of Record
Year of publishing:2014
Number of pages:str. 21-33
Numbering:Letn. 11, št. 2
PID:20.500.12556/DKUM-70820 New window
ISSN:1854-0171
UDC:551.35:624.13
ISSN on article:1854-0171
COBISS.SI-ID:281009408 New window
NUK URN:URN:SI:UM:DK:ASE1PBH0
Copyright:Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru
Publication date in DKUM:14.06.2018
Views:1014
Downloads:191
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Categories:Misc.
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Record is a part of a journal

Title:Acta geotechnica Slovenica
Shortened title:Acta geotech. Slov.
Publisher:Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru
ISSN:1854-0171
COBISS.SI-ID:215987712 New window

Secondary language

Language:Slovenian
Title:Določitev teksturnih sprememb v morski glini
Abstract:V članku so opisane preiskave, izvedene za določitev teksture (t.j. razporejenosti zrn zemljine in por) intaktnih vzorcev morske gline, pridobljene z globin od 5 m do 65 m pod morskim dnom. Za določanje električne prevodnosti vzorcev morske gline v vzdolžnih in prečnih smereh sedimentacije je bila uporabljena impedančna spektroskopija, ki je neškodljiva in neinvazivna tehnika. Stopnje anizotropije v teksturi zemljin so izražene z anizotropnim koeficientom Ae kot funkcije globine. Za preučevanje teksture oziroma porazdelitve velikosti por teh vzorcev sta bila uporabljena vrstični elektronski mikroskop in živosrebrna porozimetrija. Rezultati raziskav so pokazali, da se Ae z globino poveča zaradi spremenjene razporejenosti zrn. V manjših globinah so zrna kosmičena in naključno orientirana, v večjih globinah pa razpršena in paralelno usmerjena. Študija poudarja pomembnost in uporabnost anizotropnega koeficienta Ae za določanje sprememb v teksturi morske gline zaradi zgostitve pod lastno težo.
Keywords:sedimenti, morska glina, tekstura, anizotropija, laboratorijski testi


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This document is a part of these collections:
  1. Acta geotechnica Slovenica

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