Concrete Composites with Cut Steel Fiber Reinforcement Subjected to Uniaxial Tension

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Title: Concrete Composites with Cut Steel Fiber Reinforcement Subjected to Uniaxial Tension

Author(s): B. R. Walkus, A. Januszkiewicz, and J. Jeruzal

Publication: Journal Proceedings

Volume: 76

Issue: 10

Appears on pages(s): 1079-1092

Keywords: bond (concrete to reinforcement); composite materials; compressive strength; cracking (fracturing); deformation; fiber reinforced concretes;metal fibers;modulus of elasticity;stress-strain relationships;tensile properties;tensile strength;tension tests.

Date: 10/1/1979

Abstract:
This paper deals with the investigation of cracking behavior, strength properties, and deformation properties of tensile specimens of concrete reinforced with short steel fibers. Specimens with different diameter fibers and different fiber contents were investigated. It was noticed that the addition of cut steel fibers to the concrete increases its strength but only up to some critical amount of microreinforcement. A volume of steel fibers of about 1.2 percent seems to be the best. The influence of microreinforcement arrangement on cracking behavior was analyzed on the basis of x-ray photographs. It was observed that the location of the crack depends on orientation and number of fibers in the cross section.