| Abstract |
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Concrete, even though inevitable in the field of construction, is characterised by its brittle failure. It nears to complete loss of load carrying capacity, once the failure has been initiated. This characteristic, which imparts a negative remark on the application of this material, is improved by the inclusion of a small amount of randomly distributed fibres which can remediate the weaknesses of concrete. Steel fibre reinforced Concrete (SFRC) has the improved properties of tensile strength, flexural strength, shock resistance, fatigue resistance, ductility and crack arrest. It has thus been practised in various professional fields of construction. The concrete construction is not sustainable for a variety of reasons, the foremost being that it consumes huge quantities of virgin materials. Second, being the principal binder in concrete, the Portland cement, during its production causes major contribution to greenhouse gas emissions that causes global warming and drastic climatic changes. Third, many of the concrete structures are less durable, thereby adversely affecting the resource productivity. Therefore the researchers are presently towards rehabilitative approaches on creating sustainable concrete by adopting fly ash blended concrete, which is again modified by adding steel fibres. This addresses all sustainability issues and its adoption will enable the construction industry to become more eco-friendly. Thus, this paper aims to have a comparative study between ordinary reinforced concrete and steel fibre reinforced high strength concrete under tensile and compressive loading. The fibres added in this study are the wastes from lathe shops. The behaviour of concrete samples is investigated by adding varying percentage of turn steel scraps as fibres, viz., 0.25%, 0.5%, 0.75% and 1%. The behaviour of steel fibre reinforced high strength concrete is also evaluated based on flexural capacity, load carrying capacity, cracking behaviour and deflection characteristics. The basic concrete mixes adopted were M40 and M60. The results obtained were promising, which can be adopted in the construction industry. |
