Modeling the combined effect of time and temperature on normally consolidated and overconsolidated clays

Kong, Lingming; Yao, Yao; Qi, Jilin

doi:10.1007/s11440-019-00889-5

Cited by 15 publications

(2 citation statements)

References 41 publications

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“…Clay soils are of great importance in geotechnical engineering and extensive research has been conducted to investigate their geotechnical properties [26][27][28][29][30]. Few studies have thus far been completed on the consolidation and the swelling properties of clay-rubber mixtures.…”

Section: Introductionmentioning

confidence: 99%

Deformation Characteristics of Rubber Waste Powder–Clay Mixtures

et al. 2023

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With the increasing accumulation of rubber waste, the potential reuse of rubber fillers offers a promising solution to enhance the engineering properties of low-plasticity soils while promoting environmental sustainability. In this study, the effect of rubber waste powders (RWPs) on the consolidation and deformation properties of low-plasticity clay soil (CS) was investigated using a fully automated consolidation testing procedure for clay–rubber mixtures. The study involved adding 2% up to 30% RWPs to Tehran clay, and various parameters were evaluated through consolidation, compaction, and uniaxial strength tests. The results revealed that the consolidation volume of the mixture differed from that of the CS due to the elastic nature of the rubber wastes (RWs). To achieve higher precision, a new equation was proposed to determine the void ratio, along with modified e-log p’ curves for the clay–rubber mixture. Furthermore, the addition of RWPs to the CS resulted in moderated free swelling of the soil while enhancing ductility, compression index (Cc), swelling index (Cs), and recompression index (Cr). However, it was observed that the strength and modulus of elasticity of the mixture decreased with the increase in rubber content. Considering the variations in geotechnical parameters with different rubber contents, the appropriate rubber content can be selected based on specific applications in soil and rubber mixtures, considering the required geotechnical parameters. This study highlights the potential applications of RWPs as a material in civil and geotechnical engineering projects, providing valuable insights for sustainable and eco-friendly engineering practices.

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Section: Introductionmentioning

confidence: 99%

Deformation Characteristics of Rubber Waste Powder–Clay Mixtures

et al. 2023

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“…The direction of the plastic strain increment, i.e., the plastic flow direction, is affected by various factors, like fabric anisotropy, temperature, and consolidation history, etc. [15][16][17]. It is experimentally and theoretically proved to be non-orthogonal to the yield surface [18,19].…”

Section: Introductionmentioning

confidence: 99%

A 3D non-orthogonal elastoplastic constitutive model for transversely isotropic soil

Liang

et al. 2021

Acta Geotech.

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The significant influence of transverse isotropy on mechanical behaviours of soil has long been recognised, but it is still difficult to capture well under 3D stress conditions. In this study, a method of establishing 3D non-orthogonal elastoplastic (NOEP) constitutive models for transversely isotropic soil (TI-soil) is proposed. The effect of transverse isotropy is considered by extending the characteristic stress with the fabric tensor of TI-soil. The extended characteristic stress can be used to treat the mechanical behaviour of TI-soil from the perspective of isotropic soil. Therefore, a unified strength criterion for TI-soil is developed in the same form as the Drucker-Prager criterion.In order to reflect the non-orthogonality of the plastic flow direction with respect to the yield surface, the non-orthogonal plastic flow rule is adopted, which obviates the tedious work of constructing the plastic potential function or the dilatancy relation. Based on the yield function and hardening parameter expressed in the extended characteristic stress space, specific formulations of the NOEP model for TI-soil can be derived. Comparisons between model predictions and test results show that the developed model can well reflect the effects of transverse isotropy and intermediate principal stress on the strength and deformation behaviour of TI-soil.

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Rate-dependent behavior of a saturated reconstituted clay under different over-consolidation ratios and sample variance

Lok

et al. 2021

Acta Geotech.

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Modeling the combined effect of time and temperature on normally consolidated and overconsolidated clays

Cited by 15 publications

References 41 publications

Deformation Characteristics of Rubber Waste Powder–Clay Mixtures

Deformation Characteristics of Rubber Waste Powder–Clay Mixtures

A 3D non-orthogonal elastoplastic constitutive model for transversely isotropic soil

Rate-dependent behavior of a saturated reconstituted clay under different over-consolidation ratios and sample variance

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