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SUMMARY:CESS Seminar: Liquefaction of fully and nearly saturated granular 
 soils\, experimental investigations and theoretical approach
DTSTART:20190301T121500
DTEND:20190301T130000
DTSTAMP:20260916T142245Z
UID:24795b2b0420d771fad8ef1b17bba360035377440974cc3ca9afc6aa
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Waldemar Świdziński\, Director of the Institute of Hy
 dro-Engineering\, Polish Academy of Sciences in Gdańsk\, Geomechanical De
 partment\nAbstract\nLiquefaction is one of the most spectacular phenomena 
 of soil behaviour during which granular soil changes its properties from s
 olid to liquid-like type.  Due to its disastrous character\, it has been 
 a subject of investigations carried out by various researchers from many c
 ountries over many years. Although the basic factors governing the liquefa
 ction phenomenon are quite well recognised\, there are still some gaps req
 uiring further studies and analyses. One of them is related to the degree 
 of saturation of soils\, which may be prone to liquefaction. For many year
 s it was believed that one of compulsory conditions for soils to liquefy i
 s  full saturation. Recent investigations have shown that it may not be n
 ecessarily true. The second aspect\, which requires further investigations
 \, regards the content of fines fraction in the granular composition of th
 e soil susceptible to the liquefaction process. Furthermore\, the last but
  not least\, a following question should be answered: may some types of ro
 ck undergo liquefaction as well? In the course of the presentation\, some 
 fundamental issues describing the liquefaction phenomenon\, based on the r
 esults of experimental investigations carried out in various geotechnical 
 laboratory devices (simple shear\, standard\, cyclic and true triaxial app
 aratuses) will be shown and discussed. Moreover\, the proposed theoretical
  description of pore water generation during monotonic and cyclic loading 
 for fully saturated as well as partially saturated granular soils will be 
 presented.\n \nBio\nProfessor Waldemar Świdziński has been working at t
 he Institute of Hydro-Engineering\, Polish Academy of Sciences in Gdańsk\
 , Geomechanical Department since 1981. At the Institute he obtained his Ph
 D in Soil Mechanics in 1988. After that\, he got a Postdoc position in the
  Geotechnical Laboratory at Delft Technical University\, the Netherlands\,
  where he spent over one year. Furthermore\, he was awarded D.Sc. at the T
 echnical University of Gdańsk in 2007 and became a Professor of the Insti
 tute in the same year. For many years he had been the head of the Geomecha
 nical Department. Since 2016 he is a Director of the Institute. His main s
 cientific interest is focused on mechanics of soil compaction and liquefac
 tion\, modeling the response of soil subjected to monotonic or cyclic load
 ings including earthquakes\, stability analyses\, dynamic analyses\, exper
 imental soil mechanics\, as well as large scale modeling of groundwater fl
 ow and pollution transport. Prof. Świdziński obtained essential experime
 ntal\, numerical and practical geotechnical engineering experience. Since 
 1984 to date\, he is an expert for Tailings Storage Facility belonging to 
 KGHM Polska Miedź S.A.\, one of the largest facilities of this type in th
 e world\, being an essential inspiration for many research problems. Throu
 ghout the years he has published more than 100 papers\, 20 of which in we
 ll recognized\, peer-review international journals.
LOCATION:GC B3 30 https://plan.epfl.ch/?room=GCB330
STATUS:CONFIRMED
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