Element tests on the hydraulic/mechanical behaviour of unsaturated decomposed granite soil under various conditions

Xiong, Xiaolei; Xiong, Yi; Okino, Shogo; Mikami, Ryota; Ma, Junnan; Feng, Zhang

doi:10.1007/s10064-021-02495-w

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…It can be seen from Section 2.1 that the weathered granite is loose and easy to be damaged, and its original structure would be easily destroyed during the sampling process of drilling (Xiong et al, 2022). In order to minimize disturbance, a sampling technique via hand-dug open pit (Zhang et al, 2017) was adopted to obtain the original block sample.…”

Section: Sample Collectionmentioning

confidence: 99%

“…To study the particular property of weathered granite, many studies have been carried out since the 1960s (Lee, 1965). The research emphasis developed from the engineering qualitative classification (Irfan and Dearman, 1978), the basic physical properties (Lee, 1965), and the deformation/strength characteristics (Lee and Coop, 1995) to the hydraulic/mechanical properties of unsaturated weathered granite (Xiong et al, 2022), the microstructure distribution of the intact weathered granite (Shang et al, 2015) and the relationship between the microstructure and deformation of weathered granite (Li et al, 2020). In addition, the properties of weathered granites were compared with other geomaterials and any fruitful research results provide important new insights for reference.…”

Section: Introductionmentioning

confidence: 99%

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The Small Strain Stiffness Properties of Undisturbed Weathered Granite With Different Weathering Degrees

Wang

Kong²,

Li³

et al. 2022

Front. Earth Sci.

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To evaluate the small strain stiffness properties of undisturbed weathered granite, the circular computer numerical control (CNC) abrasive wire sawing technology was applied to weathered granite sample processing and a series of resonance column tests were carried out to study the effects of weathering degree and effective consolidation pressure on dynamic shear modulus of undisturbed weathered granite. The results show that the degree of weathering and effective consolidation pressure have significant effects on the small strain stiffness properties of weathered granite. The samples with lower weathering degrees have higher dynamic shear modulus under the same effective consolidation pressure. The maximum dynamic shear modulus of samples with higher weathering degrees is more sensitive to effective consolidation pressure. Besides, a comparison between the experimental results with the previous results from other researchers indicates that the dynamic shear modulus ratio of weathered granite in the study area exceeds the parameter range obtained from others. According to the experimental results, a mathematical model of the relation between corrected standard penetration test (SPT) N’ value and dynamic shear modulus was established, and besides, the variation range of dynamic shear modulus ratio of weathered granite in the study area was given, which may provide a reference for dynamic stability analysis of engineering in the study area.

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Section: Sample Collectionmentioning

confidence: 99%