Wszystkie pola: CL consolidation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Ocena doświadczalnych rozkładów ciśnienia porowego w badaniach konsolidometrycznych typu CL
The assessment of pore pressure experimental distributions during continuous loading (CL) consolidation tests
Autorzy:: Kowalczyk, S.
Powiązania:: https://bibliotekanauki.pl/articles/2074386.pdf
Data publikacji:: 2005
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: konsolidacja gruntów
ciśnienie wody w porach
parametr ciśnienia porowego
consolidation
CL consolidation test
variability of pore water pressure
parameter C_CL
Opis:: The pore pressure variations that were obtained during CL consolidation tests are discussed in this paper. The comparative analysis was made on the base of observed changes to confront information on experimen-tal soil behavior with theoretical solutions of the primary (filtration) consolidation process. On the basis of obtained experimental data, the factors resulting in the incompatibility with the theoretical models, were identified and discussed in this paper. This incompatibility results from degree of saturation, conditions of dispersion of pore water pressure and load rate path.
Źródło:: Przegląd Geologiczny; 2005, 53, 2; 162-167
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Evaluation of consolidation parameters in CL tests; theoretical and practical aspects
Autorzy:: Dobak, P.
Powiązania:: https://bibliotekanauki.pl/articles/2059088.pdf
Data publikacji:: 2008
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: consolidation
cohesive soils
continuous loading
pore water pressure
Opis:: The paper presents theoretical solutions of the consolidation problem with respect to the different conditions of continuous loading and its application. The author introduces modified consolidation parameters and dimensionless parameters characterizing the course of the consolidation process. Therefore it is possible to calculate the theoretical pore water pressure distribution for various loading procedures in continuous loading (CL) consolidation tests occurring in constant rate loading (CRL), constant rate of strain (CRS) or controlled gradient (CG) tests. The calculation results allow presentation of the attributes that differentate CL consolidation and classical incremental loading (IL) consolidation. A new method of calculation cv (coefficient of consolidation) is proposed using theoretical diagrams of porewater pressure distribution and results of laboratory measure ments during the CL test. A comparative analysis of the methods currently used for cv calculation and the new method is presented here. The cv values estimated by means of method referring only to the seepage factor of consolidation, are usually higher than those based on the strain course. Proper projection of the seep age factor of consolidation makes it possible to shorten the time of consolidation tests in accordance with results of many field observations. The methods described herein can be useful in studying physical conditions of sedimentation, glacial geology, early diagenetic process and applied geology.
Źródło:: Geological Quarterly; 2008, 52, 4; 397-397
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Loading velocity in consolidation analysis
Autorzy:: Dobak, P.
Powiązania:: https://bibliotekanauki.pl/articles/2059630.pdf
Data publikacji:: 2003
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: consolidation
CL test programming
loading velocity path
Opis:: In consolidation CL test programming various recommendations are encountered with regard to the selection of loading velocity. The criterion of consistency of CL test results with the traditional IL system is not fully justifiable. The behaviour of soil in conditions of constant load increase shows peculiar theoretical and experimental characteristics, different from IL tests. An optimummethod of proper CL test velocity is the analysis of loading velocity path in subsoil. Thismethod allows for taking into consideration the effect of permeability decrease during increase of pore water pressure. The basic factors, scaling loading velocities in field and in laboratory conditions, are the conditions of drainage of pore water.
Źródło:: Geological Quarterly; 2003, 47, 1; 13-20
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Load velocity influence on changes of soil consolidation and permeability parameters in CL-type tests
Autorzy:: Dobak, P.
Szczepański, T.
Kowalczyk, S.
Powiązania:: https://bibliotekanauki.pl/articles/2060282.pdf
Data publikacji:: 2015
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: consolidation
load velocity
Krakowiec formation clays
filtration coefficient
Opis:: Obtaining the reliable values of filtration – consolidation parameters depends on appropriate programming of load velocity. In the paper a critical assessment of the criteria for selecting the load velocity with regard to theoretical model of consolidation under constant rate of load (CRL) was presented. A key element of interpretation is to distinguish three stages of investigation: mobilization of pore pressure, steady phase and unsteady phase. Reliable values of filtration – consolidation parameters are obtained during steady phase, determined on the basis of dimensionless, standardized for CRL tests parameters: the pore pressure and relative time of consolidation CL (continuous loading). In order to assess trends in changes of filtration – consolidation properties of Krakowiec formation clays were chosen for investigations. The tests were performed on undisturbed samples and using soil pastes at different load velocities to propose method to choose appropriate test speed in CL tests.
Źródło:: Geological Quarterly; 2015, 59, 2; 382--390
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Określanie przepuszczalności gruntów spoistych w badaniach konsolidacji z ciągłym przyrostem obciążenia
Evaluation of cohesive soils permeability by continuous loading consolidation tests
Autorzy:: Dobak, P.
Powiązania:: https://bibliotekanauki.pl/articles/2074553.pdf
Data publikacji:: 2007
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: przepuszczalność
konsolidacja
grunty spoiste
consolidation
CL [continuous loading] tests
permeability
cohesive soils
Opis:: Evaluation of permeability by direct methods involves very long laboratory procedures and leads to considerable differences in final results. Application of indirect methods based on consolidation analysis provides a faster solution. Analyses of laboratory conditions show that consolidation test with continuous loading [CL] depends significantly on the filtration factor. Proper interpretation of CL tests requires considering several parameters: steady phase of process, quasi-linear changes of the consolidation coefficient, saturation of pore space with water and optimization of the velocity test. The paper proposes practical criteria for the test analysis, leading to evaluation results consistent with theoretical solutions of the consolidation process.
Źródło:: Przegląd Geologiczny; 2007, 55, 2; 126-132
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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