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Title:Water retention properties of stiff silt
Authors:ID Likar, Barbara (Author)
ID Kuk, Vikica (Author)
ID Fifer Bizjak, Karmen (Author)
Files:.pdf PDF - Presentation file, download (837,29 KB)
MD5: B31A6E1279E4CC1B9E7E4BC64A8C263E
 
URL URL - Source URL, visit https://doi.org/10.5474/geologija.2017.003
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract: Recent research into the behaviour of soils has shown that it is in fact much more complex than can be described by the mechanics of saturated soils. Nowadays the trend of investigations has shifted towards the unsaturated state. Despite the significant progress that has been made so far, there are still a lot of unanswered questions related to the behaviour of unsaturated soils. For this reason, in the field of geotechnics some new concepts are developed, which include the study of soil suction. Most research into soil suction has involved clayey and silty material, whereas up until recently no data have been available about measurements in very stiff preconsolidated sandy silt. Very stiff preconsolidated sandy silt is typical of the Krško Basin, where it is planned that some very important geotechnical structures will be built, so that knowledge about the behaviour of such soils at increased or decreased water content is essential. Several different methods can be used for soil suction measurements. In the paper the results of measurements carried out on very stiff preconsolidated sandy silt in a Bishop - Wesley double-walled triaxial cell are presented and compared with the results of soil suction measurements performed by means of a potentiometer (WP4C). All the measurement results were evaluated taking into account already known results given in the literature, using the three most commonly used mathematical models. Until now a lot of papers dealing with suction measurements in normal Consolidated and preconsolidated clay have been published. Measurements on very stiff preconsolidated sandy silt, as presented in this paper were not supported before.
Keywords:peščeni melj, trdni melji, sukcija, Bishop - Wesley triaksialna celica, retencijska krivulja, potenciometer WP4C
Publication status:Published
Publication version:Version of Record
Publication date:30.07.2017
Publisher:Geološki zavod Slovenije
Year of publishing:2017
Number of pages:str. 37-47
Numbering:60, št. 1
PID:20.500.12556/DiRROS-20214 New window
UDC:55
ISSN on article:0016-7789
DOI:10.5474/geologija.2017.003 New window
COBISS.SI-ID:2621781 New window
Copyright:© Author(s) 2017
Publication date in DiRROS:14.08.2024
Views:515
Downloads:238
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:
LIKAR, Barbara, KUK, Vikica and FIFER BIZJAK, Karmen, 2017, Water retention properties of stiff silt. Geologija [online]. 2017. Vol. 60, no. 1, p. 37–47. [Accessed 21 April 2025]. DOI 10.5474/geologija.2017.003. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=20214
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Record is a part of a journal

Title:Geologija
Shortened title:Geologija
Publisher:Geološki zavod Slovenije
ISSN:0016-7789
COBISS.SI-ID:5636866 New window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:Slovenian
Title:Retencijske lastnosti trdnih meljev
Abstract:Zadnje geomehanske raziskave zemljin kažejo na to, da je njihovo obnašanje veliko bolj kompleksno, kot se to lahko opiše z modeli za saturirane Zemljine. Danes se trend raziskav nagiba v področje nesaturiranih materialov. Kljub velikim premikom na tem področju ostaja še vedno veliko vprašanj povezanih z obnašanjem materialov v nesaturiranem območju, zato so se v geotehniki uveljavili novi koncepti modelov, ki vključujejo študij sukcije. Večina preiskav sukcije je osredotočenih na normalno konsolidirani glineni ali meljni material, medtem ko rezultatov preiskav v trdnem, prekonsolidiranem peščenem melju, po dosedaj znanih podatkih, ni objavljenih. Trdni, prekonsolidirani peščeni melj je tipičen za Krško kotlino, kjer se bodo gradili večji geotehnični objekti, in je poznavanje sukcije materiala ob povišanju vlage v njem bistvenega pomena. Za meritev sukcije je bilo uporabljenih več različnih metod. V članku so predstavljeni rezultati meritve sukcije trdnega peščenega melja v Bishop - Wesley dvostenski triosni celici in primerjava z rezultati meritev sukcije v potenciometru (WPC4). Rezultati so potrjeni z matematičnimi modeli, ki so v tovrstni literaturi najbolj poznani. Rezultati raziskav predstavljajo prispevek k poznavanju obnašanja prekonsolidiranega trdnega peščenega melja v nesaturiranih pogojih.


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