Constitutive Model for Cement Treated Clay in a Critical State Frame Work

Lee, Kyu-Hwan; Chan, Dave; Lam, K.C.

doi:10.3208/sandf.44.3_69

Cited by 59 publications

(41 citation statements)

References 9 publications

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“…For the cement treated clays the bounding surface will be based on the strength of cementation bonds. To consider the effect of cementation, a modified form of Modified Cam Clay yield surface is used as the structural yield surface by many researchers like Liu and Carter (2002), Lee et al (2004), Suebsook et al (2007), Horpibulsuk et al (2010). In the present study the bounding surface is assumed to have a similar form as the yield surface proposed by Lee et al (2004).…”

Section: Bounding Surface Plasticity For Cement Treated Claysmentioning

confidence: 96%

“…In these models, the effects of structure and cementation are included by considering the additional void ratio which the soil can sustain at a particular mean effective stress. Lee et al (2004) have modelled the drained behavior of cement treated clays by a simple critical state model by considering the slope of isotropic consolidation curve as a function of the mean effective stress (p 0 ) and void ratio (e). In all the above models, the yield surface in the p 0 À q space was assumed to be elliptical, but shifted to the left of origin in order to take into account the cohesive strength of cementation bonds.…”

Section: Introductionmentioning

confidence: 99%

“…So, the behavior of soils under lower confining pressures can be modeled by the bounding surface concept. Cementation properties were incorporated by an appropriate yield surface and degradation equation given by Lee et al (2004). Performance of the model is validated by carrying out undrained triaxial tests on cemented clay samples prepared in the laboratory.…”

Section: Introductionmentioning

confidence: 99%

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Undrained Triaxial Behavior of Cement Treated Marine Clay

2012

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Clays treated with lower cement contents often exhibit behaviour similar to stiff clays with planar failure surface under triaxial compression. In the present work the behaviour of a marine clay treated with 5 % cement, subjected to undrained triaxial compression tests is studied. The pre-consolidation pressure of the cemented clay due to the cementation bonding is observed to be very high. It is attempted to model the behaviour of cement treated clay using a bounding surface plasticity formulation as the plastic behaviour of the cemented clays within the yield surface has to be considered. The effect of cementation is included in the model as the pre-consolidation pressure obtained from consolidation tests. The tensile strength due to cementation bonds is included in the equation of the bounding surface. Simulations of the undrained triaxial compression tests on cemented clays are carried out and the results are validated with the experimental results.

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Section: Bounding Surface Plasticity For Cement Treated Claysmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Undrained Triaxial Behavior of Cement Treated Marine Clay

2012

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“…Lee et al (2001) reported that the behavior of the cement-clay with lower cement content is similar to an over-consolidated soil. They also introduced a constitutive model for cement-clay with a new parameter (bonding stress ratio) to account for the effect of cementation within the framework of the critical state concept [18]. Recently, advances in nanosciences and nanotechnologies have made it possible to use nanoparticles in soil stabilization.…”

Section: Introductionmentioning

confidence: 99%

“…Based on results, when it comes to the geotechnical properties of some lateritic soils, they concluded that the termite reworked soils showed remarkable improvement in shear strength, CBR, plasticity index and specific gravity [17]. Lee et al (2001) reported that the behavior of the cement-clay with lower cement content is similar to an over-consolidated soil. They also introduced a constitutive model for cement-clay with a new parameter (bonding stress ratio) to account for the effect of cementation within the framework of the critical state concept [18].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Sandy Soil Improved with Cement and Nanosilica

2015

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Abstract:In the literature, studies show that nanosilica particles and artificial pozzolans possessing can improve structural properties of cement-based materials. This paper studies the effect of cement and nanosilica on the engineering properties (compaction, unconfined compressive strength) of sand. Three different cement ratios (5, 9, and 14% by weight of dry sand) were mixed with four different nano silica ratios (0, 5, 10, and 15% by weight of cement), and then compacted into a cylindrical specimen. The results of the study presented that the addition of the cement and nanosilica improves the engineering properties of sands. The increase of maximum dry unit weight of sand was noted with the increase in the cement content. The presence of nanosilica in optimal percentages can significantly improve the mechanical properties of cement sand.

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An SMP critical state model for methane hydrate‐bearing sands

Lin

Seol

Choi

2015

Num Anal Meth Geomechanics

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Summary Mechanical properties of methane hydrate‐bearing soils are complex. Their behavior undergoes a significant change when hydrates dissociate and become methane gas. On the other hand, methane hydrates are ice‐like compounds and, depending on the hydrate accumulation habits and the degree of hydrate saturation, may cement soil particles into stronger and stiffer soils. A new constitutive model is proposed that is capable of capturing essential characteristics of hydrate‐bearing soils. The core of the model includes the spatial mobilized plane concept; a transformed stress, tij; the critical state; and the subloading framework. The proposed model gives soil responses due to stress changes or hydrate saturation changes or both. The performance of the model has been found satisfactory, over a range of hydrate saturation and confining pressures, using triaxial test data from laboratory‐synthesized samples and from field samples extracted from Nankai Trough, Japan. Copyright © 2015 John Wiley & Sons, Ltd.

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Constitutive Model for Cement Treated Clay in a Critical State Frame Work

Cited by 59 publications

References 9 publications

Undrained Triaxial Behavior of Cement Treated Marine Clay

Undrained Triaxial Behavior of Cement Treated Marine Clay

Mechanical Properties of Sandy Soil Improved with Cement and Nanosilica

An SMP critical state model for methane hydrate‐bearing sands

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