Relevant bibliographies by topics / Suction-Oedometer

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Suction-Oedometer'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Suction-Oedometer.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Suction-Oedometer"

1

Rezania, Mohammad, Meghdad Bagheri, and Mohaddeseh Mousavi Nezhad. "Creep and consolidation of a stiff clay under saturated and unsaturated conditions." Canadian Geotechnical Journal 57, no. 5 (May 2020): 728–41. http://dx.doi.org/10.1139/cgj-2018-0398.

Full text
Abstract:
In this paper, the one-dimensional (1D) time-dependent behaviour of natural and reconstituted London Clay samples under saturated and unsaturated conditions is studied. For this purpose, a set of 1D consolidation tests including multi-staged loading (MSL) oedometer tests and single-staged loading (SSL) long-term oedometer creep tests were carried out on saturated and unsaturated specimens. Conventional oedometer cells were used for tests on saturated specimens, whereas a newly designed unsaturated oedometer cell, equipped with two high-capacity tensiometers (HCTs) for suction measurements, was used for unsaturated tests. The tests results revealed stress dependency and suction dependency of primary and secondary consolidation responses of the soil samples. Furthermore, counter to formerly acknowledged suggestions of independency of the slope of normal consolidation line to suction changes, it was observed that an increase in suction results in a decrease of the slope of compression curve (Cc) and the creep index (Cαe) values and an increase in yield vertical net stress (σp). Moreover, the Cαe/Cc ratio for London Clay was found to be stress- and suction-dependent, unlike the previously suggested hypotheses.
APA, Harvard, Vancouver, ISO, and other styles
2

Rao, Sudhakar M., and P. Shivananda. "Role of osmotic suction in swelling of salt-amended clays." Canadian Geotechnical Journal 42, no. 1 (February 1, 2005): 307–15. http://dx.doi.org/10.1139/t04-086.

Full text
Abstract:
The present study examines the influence of extraneous salt addition on pore-fluid osmotic suction of a clay soil. The dependence of swell potentials of the salt-amended clay specimens on initial pore-fluid osmotic suction is also examined. The osmotic suctions predicted by Van't Hoff's equation are in excess or smaller than the values calculated from the pore water electrical conductivity, depending on whether the Van't Hoff factor in the Van't Hoff equation is included or not. Experimental results suggest that the salt-amended specimens absorbed water and swelled in response to matric suction and chemical concentration gradients on inundation with water in oedometer cells. Salt also diffused from the soil pores of salt-amended specimens to the reservoir water in oedometer cells in response to chemical concentration gradients. Reduction in effective stress from osmotic flow into the soil specimen and increase in interparticle repulsion from reduction in pore-water salt concentration rendered the total swell potentials of salt-amended specimens independent of initial pore-fluid osmotic suction. The initial pre-fluid osmotic suction does, however, significantly affect the rate of swelling.Key words: clays, chemical properties, swell potential, suction.
APA, Harvard, Vancouver, ISO, and other styles
3

Fattah, Mohammed Y., and Basma A. Dawood. "Time-dependent collapse potential of unsaturated collapsible gypseous soils." World Journal of Engineering 17, no. 2 (March 2, 2020): 283–94. http://dx.doi.org/10.1108/wje-09-2019-0276.

Full text
Abstract:
Purpose This study aims to predict the volume changes and collapse potential (CP) associated with the changes in soil suction by using the pressure cell and the effect of initial load on soil suction. Three types of gypseous soils have been experimented in this study, sandy gypseous soil from different parts of Iraq. A series of collapse tests were carried out using the oedometer device [single oedometer test (SOT) and double oedometer test (DOT)]. In addition, large-scale model with soil dimensions 700 × 700 × 600 mm was used to show the effect of water content changes in different relations (collapse with time, stress with time, suction with time, etc.). Design/methodology/approach A series of collapse tests were carried out using the oedometer device (SOT and DOT). In addition, a large-scale model with soil dimensions 700 × 700 × 600 mm was used to show the effect of water content changes in different relations (collapse with time, stress with time, suction with time, etc.). Findings The CP increases with the increasing of the void ratio for each soil. For each soil, the CP decreased when the initial degree of saturation increased. Kerbala soil with gypsum content (30%) revealed collapse value higher than Tikrit soil with gypsum content (55%) under the same initial conditions of water content and density, this is because the higher the Cu value of Kerbala soil is, the more well-graded the soil will be. Upon wetting, the smaller particles or fractions of the well-graded soil tend to fill in the existing voids, resulting in a lower void ratio as compared to the poorly graded one. Consequently, soils with high Cu value tend to collapse more than poorly graded ones. The compressibility of the soil is low when loaded under unsaturated condition, the CP for samples tested in the DOTs under stress level 800 kPa are greater than those obtained from collapse test at a stress level of 200 kPa. Originality/value The initial value of suction for all soils increases with initial water content decreases.
APA, Harvard, Vancouver, ISO, and other styles
4

Tu, Hongyu, and Sai K. Vanapalli. "Prediction of the variation of swelling pressure and one-dimensional heave of expansive soils with respect to suction using the soil-water retention curve as a tool." Canadian Geotechnical Journal 53, no. 8 (August 2016): 1213–34. http://dx.doi.org/10.1139/cgj-2015-0222.

Full text
Abstract:
The one-dimensional (1-D) potential heave (or swell strain) of expansive soil is conventionally estimated using the swelling pressure and swelling index values that are determined from different types of oedometer test results. The swelling pressure of expansive soils is typically measured at saturated condition from oedometer tests. The experimental procedures of oedometer tests are cumbersome as well as time-consuming for use in conventional geotechnical engineering practice and are not capable of estimating heave under different stages of unsaturated conditions. To alleviate these limitations, semi-empirical models are proposed to predict the variation of swelling pressure of both compacted and natural expansive soils with respect to soil suction using the soil-water retention curve (SWRC) as a tool. An empirical relationship is also suggested for estimating the swelling index from plasticity index values, alleviating the need for conducting oedometer tests. The predicted swelling pressure and estimated swelling index are then used to estimate the variation of 1-D heave with respect to suction for expansive soils by modifying Fredlund’s 1983 equation. The proposed approach is validated for eight field sites from six countries — namely, Saudi Arabia, Australia, Canada, China, USA, and UK — and on six different compacted expansive soils from USA.
APA, Harvard, Vancouver, ISO, and other styles
5

Villar, M. V., and P. L. Martin. "Suction-controlled oedometer tests in montmorillonite clay: preliminary results." Geological Society, London, Engineering Geology Special Publications 11, no. 1 (1996): 309–12. http://dx.doi.org/10.1144/gsl.eng.1996.011.01.41.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Derfouf, Feth-Ellah Mounir, Nabil Abou-Bekr, Said Taibi, Mohammed Amine Allal, and Assia Benchouk. "Hydromechanical behaviour of a marl on controlled suction oedometer path." European Journal of Environmental and Civil Engineering 24, no. 4 (November 10, 2017): 500–519. http://dx.doi.org/10.1080/19648189.2017.1399293.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Rampino, C., C. Mancuso, and F. Vinale. "Laboratory testing on an unsaturated soil: equipment, procedures, and first experimental results." Canadian Geotechnical Journal 36, no. 1 (August 8, 1999): 1–12. http://dx.doi.org/10.1139/t98-093.

Full text
Abstract:
This paper describes two new apparatuses recently developed at the Università di Napoli Federico II (Italy) in order to test soils under unsaturated conditions. The related experimental procedures and the first results obtained on a dynamically compacted silty sand are also discussed. The devices mentioned are a Bishop and Wesley stress-path cell and a Wissa oedometer, modified to control matric suction and to measure all the stress-strain variables relevant to unsaturated soil mechanics. Specific experimental procedures were established to perform tests under general conditions and were carefully verified during several tests. Using the triaxial cell, isotropic and anisotropic compression stages were carried out under constant suction levels of 0, 100, 200, and 300 kPa. Furthermore, two deviator stages were performed following different stress paths and water drainage conditions. Using the oedometer, an additional suction level (400 kPa) was investigated during compression tests driven up to 5 MPa of vertical net stress (sigmav - ua). This research is a part of a major project in progress at the Dipartimento di Ingegneria Geotecnica of Naples; it is aimed at the experimental analysis of the behaviour of several dynamically compacted soils and at the numerical modelling of boundary problems related to earth structures.Key words: unsaturated soils, equipment layout, silty sand, matric suction.
APA, Harvard, Vancouver, ISO, and other styles
8

Rampino, Celestino, Claudio Mancuso, and Filippo Vinale. "Experimental behaviour and modelling of an unsaturated compacted soil." Canadian Geotechnical Journal 37, no. 4 (August 1, 2000): 748–63. http://dx.doi.org/10.1139/t00-004.

Full text
Abstract:
This paper reports the experimental study and modelling of the mechanical response of a silty sand used in the core of the Metramo dam, Italy. Specimens were prepared by compacting the soil at optimum water content conditions using the modified Proctor technique. Tests were performed under suction-controlled conditions by a stress path triaxial cell and an oedometer. The experimental program consists of 23 tests carried out in the suction range of 0-400 kPa. The findings indicate the strong influence of suction on compressibility, stiffness, and shear strength. The mechanical properties of the soil improve with suction following an exponential law with decreasing gradient. Furthermore, the soil exhibited collapsible behaviour upon wetting even at low stress levels. Interesting results were also achieved in elastoplastic modelling as well. The results led to characterization of soil behaviour with reference to widely accepted modelling criteria for unsaturated soils, providing noteworthy suggestions about their applicability for granular materials with a non-negligible fine component. Finally, some remarks are made for the extension under unsaturated conditions of the "Nor sand" model for saturated granular soils. The proposed approach yields improved predictions of deviator soil response of the tested soil when Cambridge-type frameworks prove invalid.Key words: unsaturated soils, stress state variables, triaxial tests, oedometer tests, constitutive model.
APA, Harvard, Vancouver, ISO, and other styles
9

Lopes, Elis Ferreira, Marcela Moreira da Rocha Moreira, Rosiel Ferreira Leme, and Francisco Chagas da Silva Filho. "Evaluation of settlement of shallow foundations laid on unsaturated soils." MATEC Web of Conferences 337 (2021): 03005. http://dx.doi.org/10.1051/matecconf/202133703005.

Full text
Abstract:
The study presents an experimental and numerical study on an unsaturated, non-plastic and poorly graded sand, originated from Fortaleza-CE, Brazil. The numerical analyses used the Finite Element Method (FEM), were performed using the UNSTRUCT software to simulate the curve stress versus strain, considering the effect of suction on soil stiffness. Characterization and determination of the retention curve were performed through filter paper tests, which were used to determine the stress versus strain curve in a double-oedometer test. Suction was considered constant along the entire test. From the numerical analyses done with UNSTRUCT software presented satisfactory results, especially in the presence of suction profiles, that show the variation of suction along of the depth. It can be concluded that higher suction values (and soil stiffness) generate lower settlements.
APA, Harvard, Vancouver, ISO, and other styles
10

Jotisankasa, Apiniti, Andrew Ridley, and Matthew Coop. "Collapse Behavior of Compacted Silty Clay in Suction-Monitored Oedometer Apparatus." Journal of Geotechnical and Geoenvironmental Engineering 133, no. 7 (July 2007): 867–77. http://dx.doi.org/10.1061/(asce)1090-0241(2007)133:7(867).

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Suction-Oedometer"

1

Saab, Alfredo Lopes [UNESP]. "Influência da sucção nos parâmetros de compressibilidade de um solo não saturado." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/148696.

Full text
Abstract:
Submitted by Alfredo Lopes Saab null (alfredo.saab@hotmail.com) on 2017-02-01T17:00:09Z No. of bitstreams: 1 Alfredo Lopes Saab - Dissertacao.pdf: 12254886 bytes, checksum: 3adb2a1a44c1994fad82ff8230482cea (MD5)
Approved for entry into archive by LUIZA DE MENEZES ROMANETTO (luizamenezes@reitoria.unesp.br) on 2017-02-06T11:32:23Z (GMT) No. of bitstreams: 1 saab_al_me_bauru.pdf: 12254886 bytes, checksum: 3adb2a1a44c1994fad82ff8230482cea (MD5)
Made available in DSpace on 2017-02-06T11:32:23Z (GMT). No. of bitstreams: 1 saab_al_me_bauru.pdf: 12254886 bytes, checksum: 3adb2a1a44c1994fad82ff8230482cea (MD5) Previous issue date: 2016-12-16
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Nos solos não saturados mudanças sazonais de umidade ocorrem devido a ciclos de umedecimento e secagem. Tais mudanças dependem das características do solo e das condições climáticas da região, o que afeta a sucção no solo. Por esta razão, as propriedades dos solos não saturados dependem não apenas da história geológica e do ambiente de formação, mas também da variabilidade sazonal, fato que muitas vezes é negligenciado na prática da engenharia. Esta dissertação apresenta um estudo da influência da sucção na compressibilidade de um perfil de solo não saturado por meio de ensaios edométricos realizados em câmaras comuns e em câmaras que permitem o controle de sucção pela técnica de translação de eixos. Os ensaios foram realizados submetendo as amostras a trajetórias de carregamento-descarregamento com sucção constante. Parâmetros constitutivos mecânicos são apresentados e correlacionados ao longo da profundidade de acordo com as condições de campo. Os resultados indicam que a colapsibilidade e a variabilidade dos parâmetros são maiores na superfície do terreno, onde o solo interage com a atmosfera e, tende a decrescer com a profundidade e com a redução da sucção inicial no solo. O estudo realizado permite uma avaliação mais detalhada da colapsibilidade do solo e auxilia a interpretação de perfis de solos colapsíveis similares e de suas propriedades e parâmetros constitutivos.
Seasonal moisture content changes take place in the unsaturated soils as a result of wetting and drying cycles. These changes depend of soil characteristics and climatic conditions of the region, which affects the soil suction. Therefore, the properties of unsaturated soils depend not only on geological history and environment formation, but also the seasonal variability, a fact that is oftentimes neglected in engineering practice. This research presents an study of the influence of suction on compressibility of a collapsible unsaturated soil profile using conventional and suction controlled oedometer tests by the axis translation technique. The tests were performed submitting the specimen to loading-unloading paths under constant suction. Mechanical constitutive parameters are presented and correlated with the depth according to the in situ conditions. The results indicate that the soil collapsibility and the variability of constitutive parameters are greather on the ground surface, where the soil interacts with the atmosphere, and tends to decrease with depth and with the reduction of the initial soil suction. The study allow a more detailed evaluation of soil collapsibility and assist the interpretation of collapsible soils profiles and their properties and constitutive parameters.
APA, Harvard, Vancouver, ISO, and other styles
2

"A Soil Suction-Oedometer Method and Design Soil Suction Profile Recommendations for Estimation of Volume Change of Expansive Soils." Doctoral diss., 2019. http://hdl.handle.net/2286/R.I.53773.

Full text
Abstract:
abstract: The experience base of practitioners with expansive soils is largely devoid of directly measured soil suction. This historical lack of soil suction measurement represents an impediment to adoption of modern unsaturated soil engineering to problems of expansive soils. Most notably, soil suction-based analyses are paramount to proper design of foundations in expansive soils. Naturally, the best method to obtain design suction profiles is to perform an appropriate geotechnical investigation that involves soil moisture change-appropriate drilling depths, sampling intervals, and requisite laboratory testing, including suction measurement. However, as practitioners are slow to embrace changes in methodology, specifically regarding the adoption of even relatively simple suction measurement techniques, it has become imperative to develop a method by which the routine geotechnical procedures currently employed can be used to arrive at acceptable approximations of soil suction profiles. Herein, a substitute, or surrogate, for soil suction is presented, such that the surrogate agrees with observed field soil suction patterns and provides estimates of soil suction that are acceptable for use in practice. Field investigations with extensive laboratory testing, including direct suction measurement, are used in development of the soil suction surrogate. This surrogate, a function of water content and routinely measured soil index properties, is then used in estimation of field expansive soil suction values. The suction surrogate, together with existing geotechnical engineering reports, is used to augment the limited existing database of field soil suction profiles. This augmented soil suction profile database is used in development of recommendations for design suction envelopes and design suction profiles. Using the suction surrogate, it is possible to proceed from the beginning to the end of the Suction-Oedometer soil heave/shrinkage analysis without directly measuring soil suction. The magnitude of suction surrogate-based heave estimates is essentially the same as heave estimates obtained using direct soil suction measurements. The soil suction surrogate-based approach, which uses a complete-stress-state approach, considering both net normal stress and soil suction, is an intermediate step towards the adoption of unsaturated soil engineering in expansive soils analyses, wherein direct soil suction measurements are routinely made.
Dissertation/Thesis
Doctoral Dissertation Civil, Environmental and Sustainable Engineering 2019
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Suction-Oedometer"

1

Lu, D., and W. Li. "Consolidation behavior of unsaturated Chuanxi compacted soil with soil suction control oedometer." In Unsaturated Soil Mechanics - from Theory to Practice, 263–66. CRC Press, 2015. http://dx.doi.org/10.1201/b19248-41.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

"Stress path dependence of hydromechanical behaviour of compacted scaly clay in wetting and drying suction controlled oedometer tests at constant vertical net stress." In Unsaturated Soils. Advances in Geo-Engineering, 337–42. CRC Press, 2008. http://dx.doi.org/10.1201/9780203884430-45.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Farulla, C. "Stress path dependence of hydromechanical behaviour of compacted scaly clay in wetting and drying suction controlled oedometer tests at constant vertical net stress." In Unsaturated Soils. Advances in Geo-Engineering, 321–26. Taylor & Francis, 2008. http://dx.doi.org/10.1201/9780203884430.ch39.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Suction-Oedometer"

1

Li, Lin, Xiong Zhang, and Chuang Lin. "Development of an Oedometer Cell with Suction Measurement Ability." In International Symposium on Systematic Approaches to Environmental Sustainability in Transportation. Reston, VA: American Society of Civil Engineers, 2015. http://dx.doi.org/10.1061/9780784479278.017.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Houston, Sandra L., and William N. Houston. "Suction-Oedometer Method for Computation of Heave and Remaining Heave." In Second Pan-American Conference on Unsaturated Soils. Reston, VA: American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481677.005.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Suction-Oedometer' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography