Since the breakage state is influenced by many factors, such as the particle characteristics [25], initial gradation [12] and loading conditions [38], it is difficult to quanti-tatively describe the evolution process by purely theoretical methods. Therefore, most of the aforementioned studies are limited to qualitative analysis of the law of ...

A crude test procedure description of this Crushability test follows in that rock samples smaller than 75 mm but greater than 50 mm are placed 2 "hammers" of 13.6 kg each and mounted to swing on bicycle wheels. Both hammers of the "pendulum" will impact the smallest measured side on the rock. The hammers are set to fall again from a ...

Carbonate sediments are originated from the skeletal remains of marine organisms, which are abundantly situated at the tropical and petrochemical reservoir in Australia, India, the North Sea coasts, and the Persian Gulf. The different behavior of carbonate remains in comparison to siliceous soils has attracted attention among …

The concept of critical state has been a cornerstone of modern critical state soil mechanics. It remains inconclusive how grain crushing affects critical state behavior in crushable granular sand. A multiscale computational approach is employed in this study to simulate the shearing behavior of crushable granular sand at critical state. Grain …

Altuhafi & Coop 2011). Various breakage factors are defined to quantify the change of PSD and soil crushability. In this paper, Hardin's breakage index is adopted and its evolution …

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The engineering properties of raw calcareous sand are generally poor because of its loose structure, high porosity ratio, particle crushability, and irregular shape (McClelland, 1988;Wang et al ...

Crushing is a size reduction process that plays a key role in both mineral processing and crushing–screening plant design. Investigations on rock crushability have become an important issue in mining operations and the manufacture of industrial crusher equipment. The main objective of this research is to quantify the crushability of hard …

The calcareous sand is a biogenic sediment obtained from the reef reclamation site in Nansha Island, South China Sea. The total area of coral reefs in South China Sea is approximately 3.8*10 4 km 2, occupying 5% of the total amount all around the world.Majority of coral reefs are located within the region of Nansha Island.

The rock factor represents the blastability of the rock mass, which quantifies the compound effect of the geological and geotechnical site factors on fragmentation.

The crushability of twenty-four different rock types were determined and correlated with the corresponding results from the impact strength test. It was found that there is a strong inverse linear relation between the crushability index and the impact strength index. ... The four other factors cannot be separated fully from each other since …

The calcareous sand used in this study was taken from island and reefs in the South China Sea. It is a loose and uncemented granular material. and is mainly …

Over the last 20 years, China has become sub-Saharan Africa's largest bilateral trading partner. Around 20% of the region's exports now go to China and about 16% of Africa's imports come from China, according to the International Monetary Fund (IMF). In 2023, this relationship reached a record total trade volume of $282 billion.

The calcareous sand is a biogenic sediment obtained from the reef reclamation site in Nansha Island, South China Sea. The total area of coral reefs in South China Sea is approximately 3.8*10 4 km 2, occupying 5% of the total amount all around …

@article{Wu2021ExperimentalIO, title={Experimental investigation on mechanical behavior and particle crushing of calcareous sand retrieved from South China Sea}, …

The objective of this paper is to study the expanded clay material behaviour considering the crushability of its single grains. The probed material is characterized by a high internal porosity ...

Particle size is the major factor that affects the strength of brittle materials. Generally, an increasing sample size leads to an increase in the probability of failure …

Keywords: powder factor, intact rock properties, post-blast conditions and comminution theory, artificial neural networks. Rebound number vs. Powder factor [31]. ...

The erosion of limestone and calcarenite ridges that existed parallel to the Mediterranean shoreline forms the calcareous sand (CS) formation at the surface layer of Egypt's northern coast.

Then, to determine the crushability indices (CI) and particle sizes (d50 and d80), test rocks were prepared in three different size ranges. All test rocks were crushed by a jaw crusher, respectively, and CI, d50, and d80 values were determined. ... In addition, the energy consumed by the crushing and screening plant is a significant factor in ...

In China, Greece and countries on the Balkan peninsula, mining of Diasporic type bauxite is common. For selecting of the best crushing solution, the characteristic bauxite parameters in Table 3.1 ... Another factor driving the need for using twin-roll crushing technology was the increasing feed rates of some of these new mines. Hourly feed ...

Hence, the exact Crushability factor is different for different product sectors. Conclusion. Therefore, much consideration must be taken when slotting product also for how it will be picked onto a pallet. The crushability and stackability of a product enter into how the product can be stored both on a pallet but also in a warehouse.

The shape factor for Jordan mesh 20/40 and 30/50 sand and Genoa mesh 30/50 sand was estimated to be 6.4 for stresses <30 MPa, then linearly increases to 7.4 …

Download Table | Values of crushability factors. from publication: Geotechnical characterization of the calcareous sand in northern coast of Egypt | The surface layer of the northern coastal line ...

Freeze–thaw failure of frozen rock slope often occurs during engineering construction and mining in cold area, which poses a great threat to engineering construction and people's life safety.

The factors influencing compressibility and particle breakage behaviors of calcareous sand mainly include soil gradation (Wang et al., 2020a), particle shape (Wei et al., 2020), grain size (Liu et ...

identification of parameters influencing particle crushability, such as particle size, shape, and density, is of vital importance to the proper design of dams, foundations and other infrastructure . Substantial experimental and numerical studies on influence factors of particle crush ing have been conducted in the past years

The mechanical behaviors of calcareous sand are significantly different than those of quartz sand due to the crushability, abundant inner pores and irregular particle shape [27,39,40,46, 49, 56 ...

Calcareous soil is originated from marine biogenic sediments and weathering of carbonate rocks. The formation history for calcareous sediment includes complex physical, biological and chemical processes. It is preferably selected as the major fill materials for hydraulic reclamation and artificial island construction. Calcareous sands possess inter pores and …

After all, beverages that score high on the crushability index can simultaneously satisfy those looking to drink less and those wanting to drink more. "You can make the argument that 'crushable' and 'sessionable' parallels with American binge-drinking culture," says Elle Holcomb, a Portland, Oregon–based winemaker and alcohol ...