Undrained strength behaviour of a cemented marine clay under monotonic and cyclic loading

Moses, G. Gerald; Rao, S. Narasimha; Rao, Prakash

doi:10.1016/s0029-8018(03)00018-0

Cited by 93 publications

(22 citation statements)

References 10 publications

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“…Chai and Miura (2002) presented a method for predicting the traffic-loadinduce settlement of road on soft subsoil with a low embankment. Moses et al (2003) carried out a series of cyclic triaxial shear tests to study the influence of the strain effect and load cycles on the undrained shear strength of cemented marine clay. Tang et al (2003) conducted the dynamic triaxial test of silt soils around the tunnel in Nanjing under subway train loading, presented the variations of critical dynamic stress ratio and dynamic strain with time.…”

Section: Introductionmentioning

confidence: 99%

Test on cyclic creep behavior of mucky clay in Shanghai under step cyclic loading

Tang

Zhou

et al. 2010

Environ Earth Sci

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Based on the cyclic triaxial test under step loading, the variation of cyclic creep and pore water pressure with increase in cyclic stress ratio (CSR) and load cycle of mucky clay in Shanghai were analyzed. The results show that there are two threshold values of stability cyclic stress ratio and failure cyclic stress ratio during the step loading which divide the development of cyclic creep strain into gradual stability stage, rapid growth stage and instantaneous failure stage. When the stress level is less than the failure cyclic stress ratio, the recoverable elastic strain is nearly linear with CSR. The cyclic creep properties of mucky clay are obviously influenced by the loading frequency under the same stress level.

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Section: Introductionmentioning

confidence: 99%

Test on cyclic creep behavior of mucky clay in Shanghai under step cyclic loading

Tang

Zhou

et al. 2010

Environ Earth Sci

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“…Thus, as the confining pressure continues to increase, the effect of cementation on the strength of the cemented clay reduces due to cracking and crushing of soil-cement bonds. As suggested by Moses et al (2003), and Panda and Rao (1998), when the confining pressure increases, the beneficial effects of cementation may diminish as a result of cementation degradation. Therefore, the failure envelope of the cemented clay is expected to gradually merge with that of the reconstituted cement-clay mixture.…”

Section: Introductionmentioning

confidence: 94%

“…According to Moses et al (2003), the undrained strength of cemented clays reduces significantly due to cementation degradation as the soil structure is subjected to an increasing confining pressure. Thus, the failure envelope of cemented clays is clearly non-linear and progressively merges with the CSL of the reconstituted cement-clay mixture.…”

Section: Formulation Of Cemented Cam Clay Modelmentioning

confidence: 99%

Modelling Behaviour of Cemented Clay Capturing Cementation Degradation

Nguyen

Fatahi

Khabbaz

2014

Ground Improvement and Geosynthetics

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This paper presents a constitutive model referred to as the Cemented Cam Clay (CCC) model to precisely simulate the cementation degradation of cement treated clays. Various laboratory experiments show that the effect of cementation gradually diminishes as the confining pressure increases, particularly at high effective confining pressures, due to breakdown of cementation bonds. The main concepts and the formulations of CCC model, including elasto-plastic stress strain relationships, are presented within the framework of the critical state concept and inspired by the Modified Cam Clay (MCC) model. The special characteristic of the proposed model includes a modified mean effective stress capturing cementation degradation. In addition, the failure envelope is formulated to describe the beneficial effect of cementation at low mean effective pressure range, while it merges with the Critical State Line of reconstituted cement-clay mixture as the confining pressure continues to increase. The performance of the proposed model is evaluated against triaxial test results from cement treated Aberdeen soil. The model predictions provide good agreement with triaxial test results, particularly at high effective confining pressures.

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“…Post-cyclic behavior of normally consolidated (NC) clay has been found to be softer than pre-cyclic loading (Koutsoftas and Fischer, 1980;Matsui et al, 1980;Andersen, 1983;Moses et al, 2003). Stiffness degradation has been found to depend on the maximum strain during cyclic loading (Taylor and Bacchus, 1969;Koutsoftas, 1978).…”

Section: Introductionmentioning

confidence: 99%

Response of organic clay under cyclic loading

Devi¹,

Sahu

Mukherjee

2013

International Journal of Geotechnical Engineering

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Stress controlled cyclic triaxial tests were performed under different cyclic stress ratios (CSRs) and confining stress of 100 kPa on normally consolidated locally available clay and organic clay with 15% (RO1) and 26% (RO2) organic contents to study the axial strain and pore pressure response. The cyclic stresses were applied at frequency of 1, 0?5, and 0?1 Hz. Isotropically consolidated undrained (CIU) tests were also performed to study the shear strength characteristics of these soils. The results showed that organic clay failed at higher deviator stress than inorganic clay. During cyclic loading, the axial strain in inorganic clay is found to be higher than in organic clay for same CSR and frequency. However, the pore pressure ratio response in organic clay at lower frequency of 0?1 Hz was higher than in clay in the initial cycles of loading. The final pore pressure ratio attained at stabilization was more or less same in both the types of soils.

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Undrained strength behaviour of a cemented marine clay under monotonic and cyclic loading

Cited by 93 publications

References 10 publications

Test on cyclic creep behavior of mucky clay in Shanghai under step cyclic loading

Test on cyclic creep behavior of mucky clay in Shanghai under step cyclic loading

Modelling Behaviour of Cemented Clay Capturing Cementation Degradation

Response of organic clay under cyclic loading

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