Open AccessDynamic compaction of the Baltic basin silty Sand - quality assurance with CPT, DPM, DMT and PLT
Author(s) -
Pēteris Šķēls,
J. Rozitis,
N. Ivanovskis,
K. Kurtiss
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/710/1/012004
Subject(s) - alluvium , geology , structural basin , compaction , dilatometer , geotechnical engineering , baltic sea , dynamic compaction , penetration test , levee , geomorphology , subgrade , oceanography , materials science , thermal expansion , metallurgy
Post-glacial evolution of the Baltic basin sedimented Quaternary soils at the great thickness (up to 30 m) in Riga, Latvia. There are present zones of different combinations of postglacial, alluvial, limnological and dune formations within the metropolitan area of Riga. The geomorphological evolution of this territory is dominated by the Baltic sea former stages, distinguishing these areas as rather complicated. The dynamic compaction was proposed below the warehouse floor of area about 40K m2 in Baltic basin silty Sand. The effect of compaction was evaluated to the depth of 10 m and extensive quality assurance using cone penetration and piezocone tests (CPT(U)), dynamic probing (DP) tests, flat dilatometer tests (DMT) and plate loading tests (PLT), was introduced. CPT(U) and DMT results were compared in terms of soil stiffness parameter evaluation prior and after dynamic compaction. The limitation of DP tests were investigated and finally also warehouse test embankment verified by PLT evaluating shallow compaction rates.