The Consequence of Particle Crushing in Engineering Properties of Granular Materials

Hattamleh, Omar H. Al; Al-Deeky, Hussien H.; Akhtar, Mohammad Nadeem

doi:10.4236/ijg.2013.47099

Cited by 24 publications

(11 citation statements)

References 17 publications

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“…Here we take q to be 0.8 for the bulk gouge, following the values used by Niemeijer and Spiers [] and Pluymakers and Spiers [] for similar grain size material. To account for the effect of the wider range in (log) grain size observed in the shear bands, which generally reduces q and hence dilatancy angle at given porosity [e.g., Al Hattamleh et al ., ], we use q = 0.4 for the shear band. Regarding the stiffness ( K ) of the testing machine used in our experiments, this was calibrated at systematically varied confining pressures and temperatures.…”

Section: Model Implementationmentioning

confidence: 99%

Rate and state frictional and healing behavior of carbonate fault gouge explained using microphysical model

2016

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Classical rate‐and‐state friction (RSF) laws are widely applied in modeling earthquake dynamics but generally using empirically determined parameters with little or no knowledge of, or quantitative account for, the controlling physical mechanisms. Here a mechanism‐based microphysical model is developed for describing the frictional behavior of carbonate fault gouge, assuming that the frictional behavior seen in lab experiments is controlled by competing processes of rate‐strengthening intergranular sliding versus contact creep by pressure solution. By solving the controlling equations, derived from kinematic and energy/entropy balance considerations, and employing a microphysical model for rate‐strengthening grain boundary friction plus standard creep equations for pressure solution, we simulate typical lab‐frictional tests, namely, “velocity stepping” and “slide‐hold‐slide” test sequences, for velocity histories and environmental conditions employed in previous experiments. The modeling results capture all of the main features and trends seen in the experimental results, including both steady state and transient aspects of the observed behavior, with reasonable quantitative agreement. To our knowledge, ours is the first mechanism‐based model that can reproduce RSF‐like behavior in terms of microstructurally verifiable processes and state variables. Since it is microphysically based, we believe that our modeling approach can provide an improved framework for extrapolating friction data to natural conditions.

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Section: Model Implementationmentioning

confidence: 99%

Rate and state frictional and healing behavior of carbonate fault gouge explained using microphysical model

2016

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“…A pronounced change in the hydraulic conductivity takes place during grain crushing (hypothesized in Lade et al (1996); measured in David et al (1994) and 2001; Al Hattamleh et al (2013); Feia et al (2014)). This situation may arise in various engineering systems that experience a marked increase in effective stress, from compacted fills to production wells subjected to high depressurization.…”

Section: Grain Breakagementioning

confidence: 99%

The hydraulic conductivity of sediments: A pore size perspective

Ren

Santamarina

2018

Engineering Geology

150

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This article presents an analysis of previously published hydraulic conductivity data for a wide range of sediments. All soils exhibit a prevalent power trend between the hydraulic conductivity and void ratio. Data trends span 12 orders of magnitude in hydraulic conductivity and collapse onto a single narrow trend when the hydraulic conductivity data are plotted versus the mean pore size, estimated using void ratio and specific surface area measurements. The sensitivity of hydraulic conductivity to changes in the void ratio is higher than the theoretical value due to two concurrent phenomena: 1) percolating large pores are responsible for most of the flow, and 2) the larger pores close first during compaction. The prediction of hydraulic conductivity based on macroscale index parameters in this and similar previous studies has reached an asymptote in the range of k meas /5k predict 5k meas. The remaining uncertainty underscores the important role of underlying sediment characteristics such as pore size distribution, shape, and connectivity that are not measured with index properties. Furthermore, the anisotropy in hydraulic conductivity cannot be recovered from scalar parameters such as index properties. Overall, results highlight the robustness of the physics inspired data scrutiny based Hagen-Poiseuille and Kozeny-Carman analyses.

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“…Past research has established that grain crushing is influenced by many factors. These factors are ranged from soil grain characteristics such as soil particle strength (Varadarajan et al 2006) angularity and morphology (Karatza et al, 2019;Xiao et al, 2019), or soil matrix properties such as gradation (Honkanadavar and Sharma, 2014), porosity (Hyodo et al, 2016), and moisture content (Alonso et al, 2016), and anisotropy (Hattamleh et al 2010, Hattamleh et al 2013) and external factors such as induced stress (Hattamleh et al 2010), loading duration (Fu et al, 2019), and loading rate (Huang et al, 2017 and;Parab et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Effect of the Quasi Rate of Loading in Particle Crushing and Engineering Properties of Black Tough Sand

Hattamleh

Sharo

Shanab

et al. 2021

Preprint

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In this study, the effect of the quasi rate of loading in the crushing of black tough sand will be studied experimentally. The experimental works will be conducted at different normal stresses, different relative densities, and different rates of loading using the direct shear tests. All test specimens were prepared with uniformly graded sand, passing sieve #4, and retained sieve #8.The results of direct shear tests were used to investigate the factors influencing the amount of particle breakage and consequently the friction angle. After shearing of each specimen, sieve analysis was performed in order to determine the percentage of particle breakage. Results showed that the rate of loading in direct shear plays a significant role in the amount of crushing and in internal friction angles. The amount of crushing as well as shear strength was increased with the increased rate of loading. Moreover, microstructural analysis used scanning electron microscopy (SEM) analysis shown that the crushing from granular have primarily resulted from disintegration, grinding and abrasion of particles.

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The Consequence of Particle Crushing in Engineering Properties of Granular Materials

Cited by 24 publications

References 17 publications

Rate and state frictional and healing behavior of carbonate fault gouge explained using microphysical model

Rate and state frictional and healing behavior of carbonate fault gouge explained using microphysical model

The hydraulic conductivity of sediments: A pore size perspective

Effect of the Quasi Rate of Loading in Particle Crushing and Engineering Properties of Black Tough Sand

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