Ductility Performance of Hybrid Fibre Reinforced Concrete

P.N Raghunath,K Suguna,S Eswari

doi:10.3844/ajassp.2008.1257.1262

Abstract

This study presents a study on the ductility performance of hybrid fibre reinforced concrete. The influence of fibre content on the ductility performance of hybrid fibre reinforced concrete specimens having different fibre volume fractions was investigated. The parameters of investigation included modulus of rupture, ultimate load, service load, ultimate and service load deflection, crack width, energy ductility and deflection ductility. A total of 27 specimens, 100×100×500 mm, were tested to study the above parameters. The specimens incorporated 0.0 to 2.0% volume fraction of polyolefin and steel fibres in different proportions. The ductility performance of hybrid fibre reinforced concrete specimens was compared with that of plain concrete. The test results show that addition of 2.0% by volume of hybrid fibres improves the ductility performance appreciably. An adaptive Neuro-Fuzzy based model has been proposed to predict the ductility performance characteristics. A reasonably close agreement has been obtained between the experimental and predicted results.

Highlights

Concrete is considered a brittle material, primarily concrete
Concrete can be modified to characteristics of hybrid fibre reinforced concrete
May be suitably combined to produce Hybrid Fibre The third is to evaluate the ductility of hybrid fibre Reinforced Concrete (HFRC)[5]

Summary

Introduction

Concrete is considered a brittle material, primarily concrete. An adaptive Neuro-Fuzzy based model has because of its low tensile strain capacity and poor been proposed for predicting the ductility performance fracture toughness. Made to study the ductility performance of steel fibre reinforced concrete and hybrid fibre reinforced This includes combining fibres with different shapes, This study is part of the research program on dimensions, tensile strength and young’s modulus to evaluating the performance of hybrid fibre reinforced concrete matrices[6].

Results

Conclusion