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Liquefaction Susceptibility and Characterization of Rebound Response of Micaceous Sand

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Transportation Infrastructure Geotechnology Aims and scope Submit manuscript

Abstract

Micaceous soils are considered as problematic soils for highway and railway embankments. The presence of mica particles in embankment soil causes differential settlements, which affects the overlying pavement layers in the form of rutting, potholes, war** of bituminous layers, and other serviceability issues. Mica particles are flaky, fragile, platy, cohesionless, and rebound/elastic in nature. The presence of mica particles in micaceous soils causes unique geometric arrangements in the form of bridging and ordering, which affects the mechanical response of sand. Moreover, cohesionless soils are susceptible to liquefaction under high-strain dynamic loading. Therefore, it becomes indispensable to study the rebound and dynamic response of cohesionless micaceous sand under loading–unloading conditions. The current study investigated the liquefaction susceptibility and characterization of the rebound response of micaceous sand under different dynamic loading and boundary conditions. The dynamic response of micaceous sand was studied in terms of shear modulus, stiffness degradation, dam** ratio, and pore water pressure ratio. The rebound nature of micaceous sand was studied in terms of dissipated pore pressure (difference of maximum and minimum pore pressure in each loading cycle) under dynamic loading conditions. The liquefaction susceptibility of micaceous sand was found to reduce with the increase in mica content.

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Data Availability

The datasets used and/or analysed during the current study are available from the corresponding author on the request.

Abbreviations

PS:

Pure Sand

MS:

Micaceous Sand

MDD :

Maximum Dry Density

OMC :

Optimum Moisture Content

UU:

Unconsolidated Undrained

CU:

Consolidated Undrained

CTX:

Cyclic Triaxial Test

CSS :

Cyclic Simple Shear

CSR :

Cyclic Stress Ratio

CP:

Cell pressure

BP:

Back pressure

B :

Skempton’s pore pressure parameter

σ d ( max) :

Maximum deviatoric stress

σ 1 :

Major effective principal stress

σ 3 :

Minor effective principal stress

σ c :

Effective confining stress

ESR max :

Maximum effective stress ratio

D :

Dam** ratio

G :

Shear modulus

D avg :

Average dam** ratio

G avg :

Average shear modulus

D 0 :

Initial dam** ratio

G 0 :

Initial shear modulus

δ :

Cyclic degradation index

r u :

Pore water pressure ratio

N :

Number of cycles

N L :

Number of cycles to attain liquefaction

Δu :

Pore water pressure

u max :

Maximum pore water pressure

u min :

Minimum pore water pressure

Δu ( N) :

Dissipated pore water pressure at each cycle

References

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Acknowledgements

Financial support from IIT Gandhinagar is gratefully acknowledged. Any opinions, findings and conclusions or recommendations expressed in this material are those of authors and do not necessarily reflect the views of IIT Gandhinagar.

Funding

The research is funded by IIT Gandhinagar.

IIT Gandhinagar has provided access to all the research facility and purchase of consumables and contingency for this research work. Stipend of MTech (BM) was also funded by IIT Gandhinagar. Designing the research problem, performing experiments, data analysis and writing paper have been solely the responsibility of the faculty member (AS), not the Institute (IIT Gandhinagar).

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Authors and Affiliations

Authors

Contributions

BM: She has conducted all the experiments. She has also completed data analysis of the all the cyclic simple shear, cyclic triaxial and Advanced triaxial tests including basic soil testing.

SP: She has trained/helped BM to conduct data analysis of data of cyclic triaxial, cyclic simple shear and advanced triaxial tests.

AS: She has introduced this research ideas. She has helped in writing the paper and done review and editing this research work in all the phases of paper publishing.

Corresponding author

Correspondence to Ajanta Sachan.

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Not applicable.

This manuscript is based on experiments conducted on soil samples. This manuscript does NOT report on or involve the use of any animal or human data or tissue. This manuscript does NOT report any studies involving human participants, human data or human tissue.

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Not applicable. This manuscript does not contain data from any individual person.

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The authors declare that they have no competing interests.

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Manzoor, B., Pandya, S. & Sachan, A. Liquefaction Susceptibility and Characterization of Rebound Response of Micaceous Sand. Transp. Infrastruct. Geotech. 11, 557–587 (2024). https://doi.org/10.1007/s40515-023-00289-z

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