Mechanical Properties of High-Performance Concrete with Steel Fibers Oriented by an Electromagnetic Field

Carrera, Kristýna; Künzel, Karel; Konrád, Petr; Mára, Michal; Kheml, Přemysl; Fornůsek, Jindřich; Papež, Václav; Sovják, Radoslav

doi:10.1061/(asce)mt.1943-5533.0004342

Cited by 2 publications

(2 citation statements)

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“…Compared to a study with small-scale specimens [12], the mechanical parameters of the lintels showed a higher spread. It was assumed that, as the non-destructive measurement suggests, the magnetic orientation manufacturing also creates more homogeneous material and, therefore, lowers the spread of flexural strengths, dissipated energies, and other characteristics.…”

Section: Resultscontrasting

confidence: 74%

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Concrete lintels reinforced with steel fibres oriented by a magnetic field

et al. 2022

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This paper explores the possibility of applying the technique of magnetic orientation of steel fibres for manufacturing a concrete structural element of realistic dimensions, compared to small laboratory specimens. This technique could be a part of an answer to the current need for faster and automated production in the prefabrication industry. The examined specimens have dimensions of commonly used lintels in construction, 80 mm × 100 mm × 980 mm. The properties of specimens with magnetically oriented fibres are compared with same size specimens prefabricated conventionally. The orientation of fibres has been confirmed by Q-factor non-destructive testing method using a measuring coil. All specimens were tested with a four-point bending test. The specimens with oriented fibres show a significantly higher flexural strength, by 150 %, than specimens produced conventionally with the same volume of fibres.

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Section: Resultscontrasting

confidence: 74%

“…It consists of a coil generating the required magnetic field and a plastic conveyor. The same device has been used in a previous study [12], which is describing it in more detail. The device is capable of treating specimens with crosssections up to 100 mm × 100 mm and the parameters are as follows.…”

Section: Constituentmentioning

confidence: 99%