Geo-engineering properties of Eemian peats from Radzymin (central Poland) in the light of static cone penetration and dilatometer tests
PBN-AR
Instytucja
Wydział Geologii (Uniwersytet Warszawski)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
ENGINEERING GEOLOGY (40pkt w roku publikacji)
ISSN
0013-7952
EISSN
Wydawca
ELSEVIER SCIENCE BV
DOI
URL
Rok publikacji
2017
Numer zeszytu
Strony od-do
290-300
Numer tomu
226
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
Autorzy
Słowa kluczowe
en
Peat Cone penetration test CPT/CPTU Flat dilatometer test DMT Preconsolidation Diagenesis Soil classification SBT chart Fibrous structure
Streszczenia
Język
en
Treść
The paper presents the results of field studies testing the reaction of Eemian peats on the mechanical effect of standard measurement tools (CPT/CPTU, Marchetti dilatometer). Based on the collected undisturbed samples, macroscopic observations were made and SEM observations were conducted to identify the microstructural features. A fibrous structure and advanced diagenetic changes have been noted in the studied peats despite their relatively young age. These may have resulted from an exceedingly strong structural reinforcement, which causes that the studied sediments cannot be treated as low-bearing soils. Diagenetic processes caused farfetched changes of the mechanical properties, which is reflected e.g. in classification normograms. Standardized diagrams may lead to false conclusions. The presented studies of organic soils are an example of strong influence of structural features and diagenetic phenomena on the results obtained for native soils. At the same time, they imply particular caution in the interpretation of the substratum properties based only on the commonly used in situ tests. The values and variability of the collected parameters have been presented as frequency distributions. Additionally, the apparent character of the properties of preconsolidation parameters (OCR) has been shown.
Cechy publikacji
discipline:Geologia
discipline:Geology
Original article
Original article presents the results of original research or experiment.
Oryginalny artykuł naukowy
Oryginalny artykuł naukowy przedstawia rezultaty oryginalnych badań naukowych lub eksperymentu.
Inne
System-identifier
PBN-R:829409
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