Experimental Study on Influence Factors and Empirical Formula of K0 for Coarse Grained Soil

Jiang, Mingjie; Jun-gao, Zhu; Chen, Shengshui; Wang, Xiaodong; Guo, Weiwei

doi:10.1007/s12205-019-0277-x

Cited by 4 publications

(2 citation statements)

References 43 publications

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“…Meanwhile, the fine particles are the factors to influence the soil type, which further affects the mechanical performances of CGS [7,8]. Moreover, the influence of particle gradation on volume deformation is related to dilatancy.…”

Section: Introductionmentioning

confidence: 99%

An Evaluation of Vertical Dynamic Stress Attenuation for Compacted Coarse-Grained Soils

SUN¹,

Fang

SHU

et al. 2022

Journal of Sustainable Construction Materials and Technologies

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Coarse-grained soil (CGS), as a filler with the characteristics of high bearing capacity but difficult compaction for embankment construction, requires an appropriate thickness of a single compaction layer according to the influence depth of vertical dynamic stress. In this paper, a numerical analysis using PFC2D was conducted by following a scale model test with different particle gradations of compacted CGS fillers by adopting a modified PFWD. The results show that the influence depth is about 50 cm under the impact maximum stress 0.066 MPa if defined the depth as the maximum stress attenuation to 20%. The compacted CGS filler with the dense particle gradation and high strength has a rapid attenuation on vertical dynamic stress. Meanwhile, with the increase of stone content (P5, particle size ≥5 mm), the vertical dynamic stress of compacted CGS is attenuated exponentially. The maximum particle size also affects the attenuation of vertical dynamic stress, which needs further research. The findings support the development of non-destructive devices to rapidly inspect the compactness of subgrade construction.

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Section: Introductionmentioning

confidence: 99%

An Evaluation of Vertical Dynamic Stress Attenuation for Compacted Coarse-Grained Soils

SUN¹,

Fang

SHU

et al. 2022

Journal of Sustainable Construction Materials and Technologies

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

An evaluation of vertical dynamic stress attenuation for compacted coarse-grained soils

SUN¹,

Fang

SHU

et al. 2022

JSCMT

View full text Add to dashboard Cite

Coarse-grained soil (CGS), as a filler with the characteristics of high bearing capacity but difficult compaction for embankment construction, requires an appropriate thickness of a single compaction layer according to the influence depth of vertical dynamic stress. This paper used a numerical analysis using PFC2D following a scale model test with different particle gradations of compacted CGS fillers by adopting a modified PFWD. The results show that the influence depth is about 50 cm under the maximum impact stress of 0.066 MPa if defined the depth as the maximum stress attenuation to 20%. The compacted CGS filler with dense particle gradation and high strength has a rapid attenuation on vertical dynamic stress. Meanwhile, with the increase of stone content (P5, particle size ≥5 mm), the vertical dynamic stress of compacted CGS is attenuated exponentially. The maximum particle size also affects the attenuation of vertical dynamic stress, which needs further research. The findings support the development of non-destructive devices to inspect the compactness of subgrade construction rapidly.

show abstract

Design of a three-dimensional earth pressure device and its application in a tailings dam construction simulation experiment

et al. 2021

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Experimental Study on Influence Factors and Empirical Formula of K0 for Coarse Grained Soil

Cited by 4 publications

References 43 publications

An Evaluation of Vertical Dynamic Stress Attenuation for Compacted Coarse-Grained Soils

An Evaluation of Vertical Dynamic Stress Attenuation for Compacted Coarse-Grained Soils

An evaluation of vertical dynamic stress attenuation for compacted coarse-grained soils

Design of a three-dimensional earth pressure device and its application in a tailings dam construction simulation experiment

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