Carbon Fiber Reinforced Self-Consolidating Concrete - Fresh and Mechanical Properties

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Title: Carbon Fiber Reinforced Self-Consolidating Concrete - Fresh and Mechanical Properties

Author(s): M. Yakhlaf, K.A. Soudki

Publication: Special Publication

Volume: 299

Issue:

Appears on pages(s): 1-16

Keywords: Carbon fibers; filling ability; passing ability; scanning electron micrographs (SEMs); segregation; selfconsolidating concrete; modulus of rupture; toughness

Date: 1/1/2015

Abstract:
This paper discusses the effect of discrete pitch-based carbon fibers on the fresh and mechanical properties of self-consolidating concrete. A total of 5 non-air entrained carbon fiber reinforced self-consolidating concrete (CFRSCC) mixtures were produced incorporating fiber volume of 0%, 0.25%, 0.5%, 0.75% and 1% carbon fibers; the water-to-binder ratio (w/b) was 0.35. The fresh properties (filling ability, passing ability, and segregation) and mechanical properties (compressive strength, splitting tensile strength, modulus of rupture and toughness) of the concrete mixtures were determined. The test results revealed that at increasing amount of volume of carbon fibers decreased the filling ability and passing ability of concrete increased. The compressive strength decreased as the volume of carbon fibers increased. However, as the carbon fiber content increased the splitting tensile strength increased. Modulus of rupture and toughness of CFRSCC mixtures also increased as the volume of carbon fibers increased. The results show that it is possible to develop good crack resistant and sustainable CFRSCC mixtures for concrete structures.