Long-term behaviour of reconsolidated clay around a driven pile

1986 ◽  
Vol 23 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Marius Roy ◽  
Michel Lemieux
Keyword(s):  
Shear Strength ◽  
Key Words ◽  
Limit State ◽  
In Situ Testing ◽  
Lower Shear ◽  
Steel Piles ◽  
Driven Pile

Extensive in situ testing and undisturbed sampling were carried out near two steel piles to determine the long-term state of a clay in which these piles had been driven 7 years before. Results show that this material exhibits a rigidity that varies with the distance from the pile. The average rigidity in the zone of study is representative of a slightly destructured clay. The shear strength of this clay is, in most cases, equal to the shear strength of the intact material except in the zone located at depth greater than 3.5 m and within 30 cm of the pile wall, where lower shear strength values were consistently monitored. It is believed that reconsolidation after driving took place in this last case under relatively low stresses. Key words: piles, clays, ageing, destruction, reconsolidation, shear strength, rigidity, limit state.

Pénétromètre à chute libre: Impact et pénétration dans des argiles reconstituées

1985 ◽  
Vol 22 (1) ◽  
pp. 129-135 ◽  
Author(s):  
D. Levacher
Keyword(s):  
Mechanical Properties ◽  
Shear Strength ◽  
Key Words ◽  
Laboratory Tests ◽  
Free Fall ◽  
Test Series ◽  
Dynamic Resistance ◽  
In Situ Testing

The use of a free-fall penetrometer for the determination of the in situ mechanical properties of reconstituted clays is presented. The penetrometer is equipped with an accelerometer for measuring continuously the acceleration or the deceleration. The equipment is relatively simple and the test is fast. The usefulness of such a test is demonstrated, and its adaptation to in situ testing is easy to achieve. Laboratory tests indicate that the shear strength can be directly computed as a function of depth. The penetrometer, as developed, can reach a depth of 0.50 m, but it is possible to achieve greater depths with some modifications. The results presented pertain to a few test series on reconstituted clays, with impact velocities up to 8 m/s. Key words: penetrometer, impact, reconstituted clays, tests, dynamic resistance, cohesion. [Journal translation]

Full-displacement pressuremeter testing in sand

1985 ◽  
Vol 22 (3) ◽  
pp. 298-307 ◽  
Author(s):  
J. M. O. Hughes ◽  
P. K. Robertson
Keyword(s):  
Key Words ◽  
Theoretical Background ◽  
Stress Conditions ◽  
In Situ Testing ◽  
Cone Penetration ◽  
Expansion Phase ◽  
Penetration Testing ◽  
Cone Penetration Testing ◽  
Alternative Approach

An alternative approach to pressuremeter testing in sand, where the pressuremeter is pushed closed-ended, is discussed. Observations from cone penetration testing in sands are used to provide a theoretical background to the expected stress conditions around a full-displacement pressuremeter probe pushed into sand. The anticipated stress paths followed during the pressure expansion phase of the test are discussed. Data from both self-boring and full-displacement pressuremeter tests in sand are presented to support some of the suggested theoretical background. Key words: pressuremeter testing, in situ testing, sand.

Interpretation of field measurements for ice engineering applications

1996 ◽  
Vol 23 (1) ◽  
pp. 180-185
Author(s):  
Lorne W. Gold
Keyword(s):  
Mechanical Properties ◽  
Key Words ◽  
Mechanical Behaviour ◽  
Deformation Behaviour ◽  
Field Measurements ◽  
In Situ Testing ◽  
In Situ Tests ◽  
Engineering Applications ◽  
Inhomogeneous Bodies

A description is given of the nature of problems caused by ice for the engineer. Factors controlling the deformation behaviour and strength of ice are discussed briefly. A distinction is made between the behaviour of the relatively small volumes of competent ice that are normally used for tests and the large, inhomogeneous bodies that must be considered by the engineer. Consideration is given to the implications of this for the conduct of in situ tests and the interpretation of their results. Key words: ice, mechanical properties, mechanical behaviour, in situ testing, pressuremeter.

scholarly journals Soil suitability estimation for housing purposes in landslide-prone areas. The case of Karya village, Patras, W. Greece

2007 ◽  
Vol 40 (4) ◽  
pp. 1683
Author(s):  
G. Koukis ◽  
N. Sabatakakis ◽  
S. Lainas
Keyword(s):  
Shear Strength ◽  
Slope Stability ◽  
Limit Equilibrium ◽  
Shear Strength Parameters ◽  
In Situ Testing ◽  
Strength Parameters ◽  
Soil Suitability ◽  
The City ◽  
Heavy Rainfalls

This paper discusses a method of soil suitability estimation for housing purposes in landslide-prone areas based on engineering geological criteria. The studied places, Karya and Neo Souli villages are located on the eastern part of the city of Patras. Several instability problems were identified triggered by heavy rainfalls, especially during extreme meteorological events. The soil formations were classified in several geotechnical units while typical geotechnical profiles and slip sections were drawn. Limit equilibrium slope stability analyses were established in order to investigate the critical slide conditions, using shear strength parameters estimated from laboratory and in-situ testing. The studied area was finally divided into five zones according to the suitability of the encountered ground regarding housing purposes

scholarly journals Developing, modeling and in-situ-testing a long-term wellbore seal in the framework of the CO2 -EGR research project CLEAN in the natural gas field Altmark

2011 ◽  
Vol 4 ◽  
pp. 5291-5298 ◽  
Author(s):  
M.Z. Hou ◽  
L. Wundram ◽  
H. Wendel ◽  
R. Meyer ◽  
M. Schmidt ◽  
...  
Keyword(s):  
Natural Gas ◽  
In Situ Testing ◽  
Research Project ◽  
Gas Field

Development of a long-term wellbore sealing concept based on numerical simulations and in situ-testing in the Altmark natural gas field

2012 ◽  
Vol 67 (2) ◽  
pp. 395-409 ◽  
Author(s):  
Zhengmeng Hou ◽  
Lars Wundram ◽  
Robert Meyer ◽  
Meinhardt Schmidt ◽  
Steffen Schmitz ◽  
...  
Keyword(s):  
Natural Gas ◽  
Numerical Simulations ◽  
In Situ Testing ◽  
Gas Field

Efficiency of diagnosis and treatment non-invasive and microinvasive sgamous cell cervical cancer

2020 ◽  
pp. 71-74
Author(s):  
M.M. Melnyk ◽  
◽  
S.V. Nespradko ◽  
I.V. Goncharuk ◽  
M.V. Marchenko ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Key Words ◽  
National Cancer Institute ◽  
Reproductive Function ◽  
Diagnosis And Treatment ◽  
Non Invasive ◽  
Corpus Uteri ◽  
Complex Program ◽  
Early Cervical Cancer

The objective: analyse the effectiveness of diagnosis and treatment for early cervical cancer. Materials and methods. Analysed 107 cases of women’s disease on CIN ІІІ, cancer in situ, they were on treatment in National cancer institute and Kyiv dictrict cancer dispensary from 2010 till 2015 years. Results. Diagnosed percent relapse CIN ІІІ, cancer in situ contain 4.57% uninvasive and invasive form – 0.94%. Conclusion. According diagnostic CIN ІІ and CIN ІІІ is recommended to do treatment conization and dynamic dispensary observation. Are making complex program of infection HPV16, 18. In appering of margins resection some elements of tumor after wider conization by forms of cancer in situ. Many of expansive burns in cervical glands, in making of reproductive function, going disease (nodel leiomyoma of corpus uteri etc). In perspective is accept the notion of looking after and screening research of considering infection HPV16, 18 on CIN І, CIN ІІ. Key words: cervical cancer, сancer in situ, CIN І–ІІІ, diagnostic, treatment, conization.

Planning a system of permanent sample plots for integrated long-term studies of community-based forest management

1970 ◽  
Vol 16 (2) ◽  
pp. 3-11 ◽  
Author(s):  
H Meilby ◽  
L Puri ◽  
M Christensen ◽  
S Rayamajhi
Keyword(s):  
Forest Management ◽  
Key Words ◽  
Research Note ◽  
Managed Forests ◽  
Community Based ◽  
Permanent Sample Plots ◽  
Long Term Studies

To monitor the development of four community-managed forests, networks of permanent sample plots were established in 2005 at sites in Chitwan, Kaski and Mustang Districts, Nepal. This research note documents the procedures used when preparing for establishment of the plot networks, evaluates the applied stratification of the forest on the basis of data gathered in pilot surveys conducted in the early 2005, and provides a discussion on the implications of the choices made. Key words: Community-managed forests; permanent sample plots; stratification; allocation; estimates Banko Janakari Vol.16(2) 2006 pp.3-11

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