crushing of concrete

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  [PDF] STUDY OF TWO-SHAFT SHREDDER FOR CRUSHING OF CONCRETE…

  2017729 · This work presents two-shaft shredder for concrete, rubber, plastic and wood crushing. The existing machine structures have been described, and classification has been made. Analysis of their advantages and drawbacks was performed. Conclusions about the selection criteria for the machines, as the main equipment for technogenic and …

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  Crushing Behavior and Crushing Strengths of Low-Density Foam Concrete

  2019220 · In contrast to normal concrete which. has a density a round 2.3 g/cm 3 (144 pcf) and a compressive strength between 20 to 40 MPa. (2901 to 5802 psi), the foam concrete strength can be as low as 0. ...

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  Study on characteristics and prediction model of jet impact concrete ...

  2022101 · The jet abrasive concentration can be set by UltraEdit software, and under the action of jet impact, concrete with different strengths will show different response characteristics, and C30 ordinary concrete is chosen for the study, and the Johnson-Holmquist-Concrete (J H C) constitutive model is used to establish the abrasive and …

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  Impact crushing of concrete for liberation and recycling

  1999111 · Concrete consists of gravel and split gravel with a upper . Results and discussion. All tests were carried out with a good quality B 35 model concrete (35 N/mm 2 compressive strength, 0.5 water–cement ratio, 5 aggregate–cement ratio, >180 days storage time, 150 days from it wet-stored [6]). The crushing results by a central impact were ...

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  Plastic buckling and axial crushing of concrete-filled steel …

  202051 · Concrete-filled double-skin steel tubes (CFDST) are part of a different focus in CFT's research area, which is developed by pouring concrete between internal and external tubes. Since there is a hollow section in CFDST, it substantially reduces the total weight of the element compared to fully concrete-filled tubes.

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  Application of resonance crushing technology in the old cement concrete ...

  Taking the application of resonance stone-crushing technology in old cement concrete pavement renovation as an example,combining with advantages of resonance stone-crushing technology,it focuses on analysis of its construction process.Through the application of this technology,it can effectively improve the road conditions,shorten the …

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  Impact behavior of concrete columns confined by both GFRP …

  2017130 · The explosive crushing of the concrete column initiated at the top end of the column at 1 ms. With an increase of time, the crushing of concrete propagated towards to the bottom end of the column where the concrete was fully crushed into powder at 9 ms. For GFRP tube-confined concrete, in general, it also showed an explosive crushing of the ...

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  Concrete damaged plasticity - Massachusetts …

  2018130 · The amount of crushed aggregate with a grain size of over 20 mm is approximately 28% and the amount with a grain size in the range 10–20 mm is 72%. After crushing, the size of most of the aggregate was less than 20 mm. Such variation in grain size distribution can be important when recycled aggregates are used for compaction materials.

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  Impact crushing of waste concrete for coarse aggregate …

  202431 · Section snippets Materials. A concrete mixture was prepared with dimensions of approximately 100 mm × 100 mm × 100 mm. The cement was Type I P⋅O 42.5, ordinary Portland cement (Huaxin Cement Co., Ltd., Ezhou, China), with a specific gravity of 3.15 and a Blaine fineness of 4500 cm 2 /g. The fine and coarse aggregates …

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