Post-cyclic mechanical behaviors of laterite clay with different cyclic confining pressures and degrees of reconsolidation

Huang, Jun; Chen, Jian; Ke, Wenhui; Yu, Zhong; Lu, Yuan; Yi, Shun

doi:10.1016/j.soildyn.2021.106986

Cited by 10 publications

(5 citation statements)

References 38 publications

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“…The initial values of axial strain are different due to the strains generated by previous cyclic loading. Huang [31] found that the initial value of post-cyclic axial strain was non-zero. The starting points were 1.29%, 2.11%, 5.55%, and 11.93%, corresponding to the repeated cyclic stress amplitudes of 40, 50, 55, and 60 kPa.…”

Section: Introductionmentioning

confidence: 99%

“…Huang [31] suggested that the post-cyclic behavior of soil was strongly influenced by previous cyclic loading (e.g., the pore water was allowed to be discharged under cyclic loading such as traffic loads), however, post-cyclic behavior is usually assessed by a conventional triaxial test which does not take stress history into account. Furthermore, a lot of studies on cyclic and post-cyclic behavior of soft soil subjected to short-term, high-level cyclic loading, such as earthquakes or storms, have been undertaken previously.…”

Section: Introductionmentioning

confidence: 99%

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Cyclic and Post-Cyclic Behaviors of Stabilized Sand-Containing Soft Soil in Coastal Areas

Zhao

et al. 2022

Sustainability

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Land resources are being depleted due to global climate change, and as a result, infrastructures such as expressways and high-speed railways have no option but to be built in soft soil regions. Hence, the cyclic and post-cyclic behaviors of soft soil are vitally important. However, little attention has been devoted to this issue. In the current study, a series of cyclic triaxial tests and standard monotonic loading tests were carried out in order to investigate the cyclic and post-cyclic behavior of stabilized sand-containing soft soil. In addition, the stiffness evolution index model was proposed to describe the characteristics of stiffness evolution. The results show that for a given number of loading cycles, stiffness almost linearly decreases with the increase in sand content. The higher the confining pressure is, the greater the stiffness is. The cement content has the greatest impact on the stiffness evolution index. The stiffness evolution index model can provide a good description of experimental data. The initial value of post-cyclic axial strain is non-zero due to the accumulative strain caused by previous cyclic loading. Post-cyclic stress increases rapidly within a small range of strain and can reach peak stress with great speed. The post-cyclic initial tangent modulus increases from 1602 kPa to 4803 kPa as the cement content increases from 6% to 12%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cyclic and Post-Cyclic Behaviors of Stabilized Sand-Containing Soft Soil in Coastal Areas

Zhao

et al. 2022

Sustainability

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“…Coastal reclamation projects frequently employ sand. The soil beneath an embankment can be subjected to traffic loads that can modify the soil fabric and the mechanical properties of the foundation soil [1][2][3][4][5]. The safety and serviceability of geotechnical structures can be impacted by the effects of cyclic loading and the mechanical properties of the foundation soil will be changed.…”

Section: Introductionmentioning

confidence: 99%

“…Considering the low permeability of soft clay, the long period of traffic loads, and the complexity of the permeation path in the subgrade soil, many studies have been performed to evaluate the dissipation of excess pore water pressure in specimens [1,4,[13][14][15]. Wang [4] carried out undrained cyclic triaxial tests on Mississippi River Valley Silt under different initial consolidation conditions.…”

Section: Introductionmentioning

confidence: 99%

“…The authors found that tested samples fully consolidated after cyclic loading had a higher post-cyclic undrained monotonic shear strength because tested samples became denser due to reconsolidation. Jhabc [1] performed variable confining pressure triaxial tests on lateritic clay under partially drained conditions. The cyclic loading-induced pore water pressure was allowed to dissipate in order to reach various reconsolidation degrees.…”

Section: Introductionmentioning

confidence: 99%

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Post-Cyclic Drained Shear Behaviour of Fujian Sand under Various Loading Conditions

Liu

Liang

et al. 2022

JMSE

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In offshore engineering, the sand beneath an embankment may be subjected to traffic loads, resulting in a series of engineering issues. The behaviour of the sand beneath the embankment may change under a long-term traffic load. A series of drained cyclic and post-cyclic monotonic triaxial tests were performed on Fujian sand with different relative densities. The drained strength and stress–dilatancy behaviours were studied. The results indicated that the normalised peak strength ratio after cyclic loading was greater than that without cyclic loading, depending on the cyclic stress amplitude, while the critical state strength seemed to be only slightly affected by the cyclic loading history. The dilative response of sand could also be influenced by cyclic loading-induced fabric. Under constant relative density conditions, the higher the cyclic stress amplitude applied to the sand sample, the larger the volume strain produced in the critical state. Furthermore, cyclic-induced fabric could be destroyed after 6% axial strain.

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Experimental study on the dynamic properties of undisturbed loess under moistening conditions in Zhengzhou, China

He,

Hao,

Zhou

2024

Bull Eng Geol Environ

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Post-cyclic mechanical behaviors of laterite clay with different cyclic confining pressures and degrees of reconsolidation

Cited by 10 publications

References 38 publications

Cyclic and Post-Cyclic Behaviors of Stabilized Sand-Containing Soft Soil in Coastal Areas

Cyclic and Post-Cyclic Behaviors of Stabilized Sand-Containing Soft Soil in Coastal Areas

Post-Cyclic Drained Shear Behaviour of Fujian Sand under Various Loading Conditions

Experimental study on the dynamic properties of undisturbed loess under moistening conditions in Zhengzhou, China

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