EXPERIMENTAL INVESTIGATIONS AND COMPARATIVE STUDY ON EFFECT OF FIBERS ON IN-PLANE SHEAR STRENGTH OF DIFFERENT CONCRETES USINGPUSH-OFF SPECIMENS

Anil Kumar K, Harish Kumar N R, R Prabhakara

Abstract: This paper focuses on the experimental investigation and comparative study on effect of fibers on In-plane shear strength of Normal Strength Concrete (NSC), Geo-Polymer Concrete (GPC), Self Compacting Concrete (SCC) and High Strength Concrete (HSC) using push-off specimen. Size of push-off specimen chosen was 150mm×150mm×260mm. Two notches each of dimension 150mm×10mm×75mm were cut on the specimen which are perpendicular to the loading axis and having 100mm spacing between them. The end blocks of the push-off specimens were strengthened by adopting cage reinforcement. The steel fibers are added at 0.5%, 1.0% and 1.5% by volume of push-off specimens. It was observed from the experimental investigation that shear stress and crack resistance of fibre reinforced HSC were higher than the other concretes. An attempt was made to predict the shear stress by developing a mathematical model using the experimental and literature data

Keywords: Shear stress, NSC, GPC, SCC, HSC, Steel Fibers, Push-Off Specimen, In-Plane Shear Strength.

DOI: https://doi.org/10.15623/ijret.2016.0526001