Experimental and numerical studies of ultra-high performance concrete …
Wu et al. [9] investigated the impact resistance of 35–142 MPa ultra-high performance cement based composites (UHPCC) with the additions of basalt aggregates and steel fibres through conducting the high-velocity impact tests with the broad striking velocities from 510 to 1320 m/s. In this study, influences of fibre content, basalt aggregate ...
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Low Velocity and High Velocity Impact Test on …
In a high velocity impact, fracture often occurs in an impacted zone where compression is dominant. For a low velocity impact, invisible cracks often occur, but they cannot be seen …
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high velocity impact cement breaker
(PDF) Effect of bauxite aggregate in cement composites on ... properties and resistance against high-velocity projectile impact of cement composites with 28-day 8 compressive strengths from 34.2 to 197.2 MPa, in comparison to that of the siliceous sand and ...
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Numerical modeling of high velocity impact applied to reinforced
A numerical simulation of a high-velocity impact of reinforced concrete structures is a complex problem for which robust numerical models are required to predict the behavior of the experimental ...
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High Velocity Impact Cement Breaker T2tph
This paper investigates the effect of the bauxite sand and coarse aggregate on the quasi-static mechanical properties and resistance against high-velocity projectile impact of cement …
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Impact Crushers
Parker tracked impact crushers are available in a range of sizes for medium to high volume primary and secondary crushing duties where high performance, reliability, and mobility are required.
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Vertical Shaft Impactor Crusher Manufacturer | Propel
Propel Vertical Shaft Impactor has been developed with inputs from aggregate producers. The high velocity impact crusher in Propel VSI enhances the shape of the aggregates and improves the surface structure. It is suitable for all types of materials.
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Ultra-high performance concrete targets against high …
Known for its high mechanical strength and ductility, ultra-high performance concrete (UHPC) emerges as a promising material in civil and military constructions to resist …
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Resistance of cement-based materials against high-velocity …
This paper presents an experimental study on the resistance of cement-based materials across a wide range of compositions and material properties, against the impact of 8.0-mm-diameter, 7.8-g-mass, conical-nosed deformable ASSAB XW-42 steel and copper projectiles at velocities of approximately 400 m/s, in terms of the penetration depth.
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Resistance of high-performance fiber-reinforced cement composites
As one of the most commonly used construction materials, concrete has been widely investigated for severe loading conditions such as impact and blast. In these investigations, the localized damage on concrete caused by high-velocity projectile impact (HVPI), especially the penetration depth, has always been a concern.
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Ultra-high performance concrete subjected to high-velocity …
The K&C material model is widely used to numerically predict the responses of concrete structures against impact or blast loadings. In the literature, most of the K&C parameters are calibrated for normal strength concretes (NSCs), and are thus not directly applicable for ultra-high performance concretes (UHPCs).
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high velocity impact cement breaker
Modelling of High Velocity Impact on Concrete Structures ... 16-11-2020· for concrete at finite strains in order to achieve more accurate and reliable responses, particularly at high velocity …
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Simulation of high-velocity impact to concrete structures …
Some computed results of the damage-plasticity model used in this study was compared with existing experimental tests and good agreement was observed. Furthermore, to prove the strength and efficiency of the proposed stress-updating framework, several numerical examples of high-velocity impact to composite steel-concrete structures are provided.
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High Velocity Impact Cement Breaker T2tph
This paper investigates the effect of the bauxite sand and coarse aggregate on the quasi-static mechanical properties and resistance against high-velocity projectile impact of cement composites with 28-day compressive strengths from 34.2 to 197.2 MPa, in comparison to that of the siliceous sand and granite coarse aggregate.
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Impact crushers | FL Cement
Reduce the effect of wear, lower impact crushing operating costs with the FL Strike-Bar™ Crusher. With 2,600 tph throughput capacity, it crushes material larger than 2 metres and 4 tonnes in a single rotor operation, combining advanced technologies with 50 years' experience in crushing for cement production.
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Resistance of high-performance fiber-reinforced cement …
This paper presents experimental and numerical studies on the performance of seven high-performance fiber-reinforced cement-based composites against high velocity projectile impact (HVPI).
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Strike-Bar™ Crusher
Robust strike-bar impact crushing system achieves 1:40 size reduction. The FL Strike-Bar Crusher is a high-speed impact crusher designed specifically for the cement production …
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Modelling of High Velocity Impact on Concrete Structures …
Second example deals with a square small thin plate subjected to high velocity impact loading based on experiments by with dimension of 610 × 610 × 30 mm. A steel impactor with a diameter of 100 mm and a height of 100 m installed in a steel frame hits the concrete plate by an initial velocity of 12,300 mm/s.
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high velocity impact cement breaker
Modelling of High Velocity Impact on Concrete Structures ... 16-11-2020· for concrete at finite strains in order to achieve more accurate and reliable responses, particularly at high velocity impact simulations. This work is organised as follows.
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Vertical Shaft Impactor Crusher Manufacturer | Propel
Propel Vertical Shaft Impactor has been developed with inputs from aggregate producers. The high velocity impact crusher in Propel VSI enhances the shape of the aggregates and …
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Resistance of cement-based materials against high-velocity …
This paper presents an experimental study on the resistance of cement-based materials across a wide range of compositions and material properties, against the impact of 8.0-mm-diameter, 7.8-g-mass ...
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Experimental and numerical studies of ultra-high …
High velocity impact tests are conducted on ultra-high performance concrete targets. Impact responses of concrete targets and projectiles are analysed. Numerical studies …
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Low Velocity and High Velocity Impact Test on …
In a high velocity impact, fracture often occurs in an impacted zone where compression is dominant. For a low velocity impact, invisible cracks often occur, but they cannot be seen using the naked eye.
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Impact Crushers
Parker tracked impact crushers are available in a range of sizes for medium to high volume primary and secondary crushing duties where high performance, reliability, and mobility are …
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Impact resistance of concrete and fibre-reinforced concrete: …
An experimental database is compiled on the response of concrete elements to high-speed projectile impacts, which is used to identify the critical failure modes of concrete under impact loads (i.e. spalling, scabbing, penetration, and perforation of the targeted specimens) and the parameters influencing the impact resistance of concrete (i.e. velocity, mass and shape of …
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Experimental and numerical studies of ultra-high performance concrete …
High velocity impact tests are conducted on ultra-high performance concrete targets. Impact responses of concrete targets and projectiles are analysed. Numerical studies are conducted and compared with tests. The test results of penetration depth are compared with the previously proposed model.
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(PDF) Ultra-high performance concrete subjected to high-velocity …
Ultra-high performance concrete subjected to high-velocity projectile impact: implementation of K&C model with consideration of failure surfaces and dynamic increase factors May 2021 International ...
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High-velocity impact damage and compression after impact …
When composite materials are applied to aircraft structures, they are vulnerable to hail impacts [5], strikes [6], and even the impact of turbine blades [7].Therefore, it is very important to conduct high-velocity impact test and CAI test to understand the high-speed impact resistance and residual strength of composite laminates.
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Experimental and numerical investigations of low velocity impact
High-performance fiber-reinforced cement based composite (HPFRC) is a special type of HPC which is characterized by a low water-binder ratio (w/b), high quality pozzolanic material, and without any coarse aggregates [2].Metakaolin as a pozzolanic material has shown remarkable effects on tensile, bending and compressive strengths of concrete [3] as well as …
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Impact resistance of concrete and fibre-reinforced concrete: …
This paper summarises the research carried out to date on the impact resistance of concrete subjected to different impact load regimes, with a focus on high-velocity projectile impact load.
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