Geo-engineering properties of Eemian peats from Radzymin (central Poland) in the light of static cone penetration and dilatometer tests

Zawrzykraj, Piotr; Rydelek, Paweł; Bąkowska, Anna

doi:10.1016/j.enggeo.2017.07.001

Cited by 11 publications

(3 citation statements)

References 19 publications

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“…The calculated values of the coefficient of consolidation (cv) on the basis of field measurements of vertical displacements and the length of the filtration path h and t 50 were determined according to formula 14. Figure 8 shows the coefficient of vertical consolidation values calculated from equations (14) and 15 The last stage of the work was to create a nomogram showing the relationship between hydraulic permeability k h and time t flex . The data used to construct the graph were obtained from DMT tests carried out at the Nielisz dam and at Stegny sites.…”

Section: Proposal For Determination Of the Coefficient Of Vertical Comentioning

confidence: 99%

“…Several methods have been developed to estimate the horizontal consolidation coefficient c h using DMT pressure dissipation tests. The first method was developed by Robertson and Schmertmann in 1988; in response to their publication, Marchetti and Totani published their study in 1989 (e.g., Marchetti [8]; Młynarek et al, [9][10]; Long et al, [11]; Bihs et al, [12];Mayne, [13]; Zawrzykraj et al, [14]). The pressure dissipation tests proposed by the researchers use individual pressure measurements from DMT probing, which have been described in detail earlier.…”

Section: Introductionmentioning

confidence: 99%

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A New Method for the Estimation of Hydraulic Permeability, Coefficient of Consolidation, and Soil Fraction Based on the Dilatometer Tests (DMT)

Rabarijoely

2019

Studia Geotechnica Et Mechanica

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The main issue of the paper is the estimation of soil hydraulic permeability based on the DMT test. DMTA, DMTC and SASK methods performed in the Nielisz dam, Stegny and the SGGW Campus of the Warsaw University of Life Sciences sites are described. The article presents the implementation of the dilatometer Marchetti test (DMT) in the determination of soil fraction and effects of its occurrence in the subsoil, tested in the Nielisz dam located in the Wieprz river valley in the Lublin province, and in various sites in Warsaw (Stegny site and SGGW Campus of the Warsaw University of Life Sciences). In order to acquire the needed data, the flat dilatometer test (DMT) method was used. A direct and indirect pressure methodology of interpreting soil swelling was characterized in the article. The paper shows the possibilities of determining sand, silt and clay soil fractions based on po and p1 pressures from dilatometer tests (DMT) and the effective (σ’vo) and total (σvo) vertical in situ overburden stress. Additionally, the main advantage of this paper is the proposal of use of a new chart to determine hydraulic permeability and soil fraction, based on DMT tests.

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Section: Proposal For Determination Of the Coefficient Of Vertical Comentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A New Method for the Estimation of Hydraulic Permeability, Coefficient of Consolidation, and Soil Fraction Based on the Dilatometer Tests (DMT)

Rabarijoely

2019

Studia Geotechnica Et Mechanica

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“…Using improper correlations may lead to significant errors in geotechnical engineering. the studies on the empirical dependencies for soils occurring in Poland can be found in the works of, among others, Bednarczyk and Sandven [22], zawrzykraj et al [23], konkol et al [24].…”

Section: Introductionmentioning

confidence: 99%

Archives of Mining Sciences

Tankiewicz,

Bagińska

2021

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Assessment And VerificAtion of correlAtions in cPtu testing on the exAmPle of soil from the WroclAW surroundings (PolAnd)the paper presents the results of a series of cone Penetration test cPtu performed near the city of wroclaw (Poland). the tests were carried out in 13 testing points located in close distance to each other. to verify the results of the penetration tests, fine-grained soil samples from selected depths were taken for laboratory tests. the study focuses on the evaluation of soil type, unit weight, and undrained shear strength c u , and compression index C c . the grain size distribution of the soil and its mechanical parameters on the basis of a uniaxial compression and an oedometer tests were estimated. A comparison of laboratory and cPtu for selected values is presented. determination of soil type was carried out on the basis of I SBT and I C values and good agreement with the granulometric composition was found. For undrained shear strength, commonly used correlations based on N k , N kt and N ke were adopted. However, the values obtained from the cPt are significantly lower than the results from laboratory tests. therefore, values of cone factors suitable for investigated soil type and reference test were proposed. in the case of the compression index, the coefficient values β c and α m obtained agreed with those available in the literature. the findings presented in the paper indicate that laboratory tests remain necessary to identify soil properties from cPtu. the presented results are also a contribution to the knowledge of local soil conditions in the lower Silesia area (Poland).

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