· Particle geometry is a result of natural processes, such as the genesis of parent rock, particle transportation and depositional history. For granular materials, the particle morphology has a significant effect on its crushing strength in geotechnical engineering. The particle morphological parameters, sphericity, aspect ratio and
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1 Effect of crushing on near-gravity material distribution in different size fractions of an Indian non-coking coal by S. Mohanta*, B. Sahoo, I. D. Behera, and S. Pradhan 1Department of Chemical
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· The moisture–density curves, obtained from the compaction tests, are shown in Fig. 2.The value of the maximum dry density of the crushed sandstone–mudstone particle mixture (the weight ratios of SP to MP are 8:2, 6:4, 4:6 and 2:8 in Figure 2) ranges from 2.120 × 10 3 kg/m 3 to 2.175 × 10 3 kg/m 3, and that of the optimum moisture
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Available online at www.CivileJournal.org Civil Engineering Journal (E-ISSN: 2476-3055; ISSN: 2676-6957) Vol. 10, No. 03, March, 2024 824 Experimental and ANN Analysis of Shearing Rate Effects on Coarse Sand Crushing Samer R. Rabab’ah 1*, Omar H. Al Hattamleh 2, Ahmad N. Tarawneh 2,
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· A power-law relation between the dynamic initial crushing stress and the strain rate is established, which confirms the strain rate effect of cellular materials. By extracting the critical points
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· Natural fibre based green biocomposites are the material of future in structural, automotive and aerospace industry due to their environmental merits, low density, high specific strength
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· The main conclusions are: (1) the strain-rate sensitivity of cellular materials is closely associated with base material properties (both quasi-static and dynamic ones) and cell structure; (2) the
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· open access. Intrinsic flaws are an important factor affecting particle strength and breakage behavior and are closely related to the macroscopic behavior of granular soils, e.g., packing characteristics, strength, deformation, localization and failure behaviors, etc. In this paper, a novel DEM modeling approach for investigating the role of
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· Based on a standard compaction test and a standard sieve analysis test on five tested materials, the effects of the particle size distribution on the compaction behavior and particle crushing of a crushed mudstone particle mixture were investigated. Testing results indicate that the value of the maximum dry density ranges from 2.09 to 2.17
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· calculated and weighed, according to the water content of moist material, and the desired dry bulk density (about 1.94 g The crushing effect of perlite grains is shown by the evolutions of the
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· Abstract Cellular materials have great potential in blast-mitigation engineering. Subject to an intensive load, cellular materials are damaged progressively and dissipates quantities of energy. In engineering applications, cellular materials are often used as the core of sandwich structures. In this article, we investigate the crushing of cellular
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[PDF] On the effect of relative density on the crushing and DOI: 10.1016/J.IJIMPENG.2015.03.011 Corpus ID: 135615861; On the effect of relative density on the crushing and energy absorption of open-cell s under impact @article{Gaitanaros2015OnTE, title={On
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:Cellular MaterialsImpact Plastic CrushingJie Zheng, Qinghua Qin, T.J. Wang · One-dimensional impact response of density-graded cellular rods with middle-low and middle-high density distributions is investigated theoretically and
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The dynamic behavior of gradient cellular materials subject to high velocity impact is investigated theoretically and numerically. A parameter refined rigid-perfectly-plastic
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· Meanwhile, the effects of grain crushing are also discussed in combination with the characterization of the microstructure based on microcomputed tomography (micro-CT). Hence, a total of 46 tests were carried out to explore the dynamic behavior of calcareous sand under undrained conditions based on the variation in CSR, relative
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· Moreover, the granular materials respond differently to the isotropic and deviatoric stress conditions, and accordingly the breakage indices may vary even for the same state of density.
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· In this study, single-particle crushing tests were carried out on rockfill materials with nominal particle diameters of 2.5 mm, 5 mm and 10 mm to investigate the particle size effect on the single
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· In the present study, an attempt has been made to study the effect of mica on different engineering properties. Here, the percentage of mica by weight adopted for different test procedures are 2%, 4%, 6% and 8%. Direct shear test, standard Proctor test, CBR test and compressive strength test were conducted by percentage replacement of
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:Cellular MaterialsImpact Plastic Crushing · It was observed that at any relative density, the degree of particle crushing after the test is more obvious than that after isotropic consolidation, which is manifested as the increase in surface area; this trend generally
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:Cellular MaterialsImpact Plastic CrushingJie Zheng, Qinghua Qin, T.J. Wang · The impact of the stress level on the mechanical behavior and particle crushing of granular materials was studied. A new method of using the shear fracture
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· Crushing of rockfill grains is one of the most important issues in the stability study of rockfill dams/embankments. In engineering applications, crushing characteristics of a rockfill grain depend strongly on its number of contact points with neighboring grains. The present work aims to propose a breakage criterion including the
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· A mesoscale numerical model based on Voronoi tessellation is developed to investigate the loading rate effect on the crushing stress of cellular materials. The crushing stresses at both the impact and stationary ends of the Voronoi structures are simulated. The influences of the impact velocity, specimen size, inertia, and rate
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· Taking PVC foam with a relative density of 0.07 as an example, the strain rate effect of the base material will increase the impact stress by 45% and reduce the impact strain by 0.04.
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· In the present study, the effects of two different crushing operations (jaw-cone-vertical shaft impact (VSI): JCV and jaw-horizontal shaft impact (HSI): JH) on coarse aggregate morphology were studied. Angularity, texture, sphericity and F&E of three different sizes of coarse aggregates: passing a sieve of 19 mm and retaining a sieve of
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· The present study focuses on the compaction behavior and particle crushing, during the compaction, of a crushed sandstone–mudstone particle mixture. Compaction tests and sieve analysis tests, in laboratory, were performed. The effects of the mudstone particle content, by weight, on the maximum dry density, the optimum
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· data points can also be linearly fitted, shown as a dash-dotted line. The applicability of Eq. 4 has been verified by the numerical. simulation when the d. M. is in the range of 10 —150 mm. 5
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· Construction and Demolition Waste (C&DW) is generated around the world and its quantity will increase in the future. Recycling has become the favored method of dealing with concrete waste but, to avoid its downcycling, it is important to develop a recycling process which is able to produce high-grade recycled concrete aggregates
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· Lightweight expanded clay aggregate (LECA) is a lightweight granular material, which can be used as an ideal backfilling geomaterial attributed to its porous particles. Through X-ray tomography images, it is found that LECA particle is a porous composite particle with a strong shell and a fragile core, originating from the sintering
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· The rigid-perfectly-plastic-locking (R-PP-L) model ( Reid and Peng, 1997) is adopted to model the cellular materials, as shown in Fig. 3. It is assumed that the loading and unloading behaviors in the elastic and the post-densification stages are rigid, i.e. the stress waves in these two stages are infinity.
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:Cellular MaterialsDensitythe impact of different crushing technologies on crushed coke particle shape, and what is the impact of coke particle shape on bulk density? These two questions can be unified
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