Microscopic interpretation of one-dimensional compressibility of granular materials

Shen, Chong; Liu, Sihong; Wang, Yishu

doi:10.1016/j.compgeo.2017.07.010

Cited by 12 publications

(2 citation statements)

References 41 publications

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“…However, little research has been done on the compaction characteristics of gap-graded SRMs. The compaction characteristics significantly influence the density that SRMs can reach under a certain compaction effort, and in turn influence the mechanical behaviour of SRMs [17]. Therefore, it is important to investigate the compaction characteristics of gap-graded SRMs, especially when used in projects where settlement has to be strictly controlled, such as highway and airport foundations [18,19].…”

Section: Introductionmentioning

confidence: 99%

Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock Mixture

et al. 2018

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Gap-graded soil-rock mixtures (SRMs), composed of coarse-grained rocks and fine-grained soils particles, are very inhomogeneous materials and widely encountered in geoengineering. In geoengineering applications, it is necessary to know the compaction characteristics in order to estimate the minimum void ratio of gap-graded SRMs. In this paper, the void ratios of compacted SRMs as well as the particle breakage during vibrating compaction were investigated through a series of vibrating compaction tests. The test results show that gap-graded SRMs may reach a smaller void ratio than the SRM with a continuous gradation under some circumstances. When the particles in a gap interval play the role of filling components, the absence of them will increase the void ratio of the SRM. The particle breakage of gap-graded SRMs is more prominent than the SRM with continuous gradation on the whole, especially at the gap interval of 5-20 mm. Based on the test results, a minimum void ratio prediction model incorporating particle breakage during compaction is proposed. The developed model is evaluated by the compaction test results and its validation is discussed.

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Section: Introductionmentioning

confidence: 99%

Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock Mixture

et al. 2018

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“…10), their survival probability is mainly determined by the intrinsic crushing strength. In polydisperse samples, larger particles tend to have higher coordination numbers than those of smaller particles, so they exhibit more dispersed contact forces and lower deviatoric stress inside the particle, as demonstrated by Minh and Cheng (2013) and Shen et al (2017). Thus, a high coordination number is beneficial to the survival of a particle.…”

Section: Mass Survival Probabilitymentioning

confidence: 99%

Exploration of the Survival Probability and Shape Evolution of Crushable Particles during One-Dimensional Compression Using Dyed Gypsum Particles

Shen

Liu

et al. 2020

J. Geotech. Geoenviron. Eng.

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Observing the fragmentation of individual particles within granular assemblies is a subject of evident theoretical and practical importance. A new technique using dyed gypsum particles (DGPs) to match the broken particles to their parents was adopted in this study. An image-based method of acquiring the shape information of particles from two orthogonal views was proposed. The mass survival probability and shape characteristics of the children particles were analyzed after a series of one-dimensional compression tests on the DGPs. It was found that medium-sized particles in the polydisperse samples underwent more breakage than the other particles, and this might have been attributed to the combined effects of the particle crushing strength and the coordination number. The shape evolution of broken particles and surviving particles showed opposite trends. As the particles after the test within a given size range consisted of both the broken and surviving particles, their overall shape characteristics did not show a consistent trend. Furthermore, individual particle crushing tests on the children particles suggested that the breakage-induced shape irregularity did not change the Weibull modulus, but had a substantial effect on the magnitude of the survival probability.

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Micromechanical Analysis of the At-Rest Lateral Pressure Coefficient of Granular Materials

Shen

Liu

2018

Springer Series in Geomechanics and Geoengineering

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Microscopic interpretation of one-dimensional compressibility of granular materials

Cited by 12 publications

References 41 publications

Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock Mixture

Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock Mixture

Exploration of the Survival Probability and Shape Evolution of Crushable Particles during One-Dimensional Compression Using Dyed Gypsum Particles

Micromechanical Analysis of the At-Rest Lateral Pressure Coefficient of Granular Materials

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