Open AccessInfluence of Fibre Geometry on the Fracture of Steel Fibre Reinforced Concrete
Author(s) -
K. Murugan,
Stefie J. Stephen,
Ravindra Gettu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/936/1/012025
Subject(s) - materials science , ultimate tensile strength , toughness , structural engineering , composite material , fibre type , fracture toughness , engineering , medicine , skeletal muscle , endocrinology
Steel fibre reinforced concrete (SFRC) is used in various structural applications such as slabs, pavements, hydraulic structures, tunnel linings etc., due to their ability to limit the initiation and propagation of cracks, thereby improving the tensile load-carrying capacity and toughness. Two important parameters affecting the mechanical performance of a given SFRC are the type and dosage of fibres. The study presented in this paper examines the influence of fibre geometry on the fracture properties, considering two different types of cold-drawn hooked-ended steel fibres. Details of the pertaining experimental investigations conducted on SFRC with two different hooked-end geometries (denoted as 3D and 5D) at equivalent dosages are included; the tests conformed to EN 14651:2005+A1:2007. With the change in geometry, from the more conventional (3D) hooked-end with one kink, to that with three kinks at the ends (5D), even with a reduction of dosage from 45 to 35 kg/m 3 , 5D fibres were found to exhibit a slight superior performance than 3D fibres.