Journal ArticleDOI
The general and congruent effects of structure in natural soils and weak rocks
S. Leroueil,P. R. Vaughan +1 more
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In this article, the engineering properties of naturally occurring sedimentary and residual deposits which are usually treated in geotechnical engineering as ‘soils’ are reviewed, and it is shown that usually they have characteristics due to bonded structure which are similar to those of porous weak rock.Abstract:
The engineering properties of naturally occurring sedimentary and residual deposits which are usually treated in geotechnical engineering as ‘soils’ are reviewed, and it is shown that usually they have characteristics due to bonded structure which are similar to those of porous weak rock. While this structure can arise from many causes, its effects follow a simple general pattern that involves stiff behaviour followed by yield. This yield can be described in a similar way to that occurring due to overconsolidation, although it is a separate phenomenon. The effects of structure are as important in determining engineering behaviour as are the effects of initial porosity and stress-history, which are the basic concepts of soil mechanics. As it can be described in a general way, it is concluded that structure and its effects should be treated as a further basic concept of equal importance. L'article passe en revue les proprietes des depots sedimentaires et residuels naturels qui sont nor-malement traites comm...read more
Citations
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Journal ArticleDOI
Yielding Behavior of Natural Clay Considering Stress History Subjected to K_0-Consolidation
Behaviour of a Tropical Soil under Saturated Conditions Comportement d'un sol tropical dans des conditions saturées
TL;DR: In this article, a tropical soil profile is composed of a reddish lateritic layer underlain by a saprolitic soil in which a number of block samples were taken.
Journal ArticleDOI
Effect of Garment Wastes on Swell-Consolidation Characteristics of Expansive Soil
TL;DR: In this paper, the effect of garment wastes on the swell-consolidation characteristics of expansive clays has been investigated and the results show that garment wastes have a significant effect on the swelling and shrinkage characteristics of these clays.
Journal ArticleDOI
Unified description of different soils based on the superloading and subloading concepts
TL;DR: In this paper , a model based on the concepts of superloading and subloading, which considers the effects of overconsolidation and structure of soil and only adds two material parameters compared with the Cam-Clay model, is introduced.
References
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Journal ArticleDOI
On The Yielding of Soils
TL;DR: In this paper, Hvorslev's equation for the shear strength of clay is shown to define a surface in a space of three variables σ, e and τ. The progressive yielding of a sample defines a loading path in this space, and the paths taken by samples in differing tests can be correlated if a boundary energy correction is applied.
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Stress–strain–strain rate relation for the compressibility of sensitive natural clays
TL;DR: In this paper, four types of oedometer tests (constant rate of strain tests, controlled gradient tests, multiple-stage loading tests and creep tests) were carried out on a variety of Champlain sea clays.
Journal ArticleDOI
Cemented sands under static loading
TL;DR: In this paper, a test program was undertaken to define the nature of the cementation and its effect on behavior of the soils, and a total of 137 laboratory compression and tension load tests were performed on undisturbed samples of naturally and artificially prepared cemented sands.
Journal ArticleDOI
Ninth Laurits Bjerrum Memorial Lecture: "Small is beautiful"—the stiffness of soils at small strains
TL;DR: In this paper, the authors show how field measurements of displacement around foundations and excavations combined with numerical analysis and recent developments in laboratory techniques can be used to estimate the displacement of foundations.
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