Effect of inclining angle, bundling and surface treatment on synthetic fibre pull-out from a cement matrix

Abstract In an experimental investigation of synthetic fibre pull-out at an angle, it was generally observed that the force and energy of fibre pull-out increase with the inclination angle, but such increases are limited by the strength of the cement matrix at high angles due to matrix spalling. Studies were also conducted on the effects of fibre bundling and surface treatment on the pull-out behaviour. It is suggested that for effective use of the reinforcing fibres, fibre bundling should be minimized and the fibre/matrix bond property should be controlled.