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<article-meta><doi>332</doi>
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<article-title>A Study on the Behavior of Steel Fibre Reinforced Geopolymer Concrete</article-title>
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<author>S. Sundar Kumar<sup>1</sup>, K. Ravisankar<sup>1</sup>, K. C. Pazhani<sup>2</sup>, K. T. Sheethal<sup>3</sup> and W. P. Prema Kumar<sup>3</sup>  </author>

<aff><sup>1</sup>CSIR-Structural Engineering Research Centre, Taramani, Chennai.</aff>
<aff><sup>2</sup>College of Engineering Guindy, Anna University, Chennai.</aff>
<aff><sup>3</sup>Reva Institute of Technology and Management, Yelahanka, Bangalore.</aff>

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<title>ABSTRACT</title>
<p>This paper discusses the experimental studies conducted on steel fibre reinforced geopolymer concrete (SFRGPC), compares the experimental values with the models developed for steel fibre reinforced concrete (SFRC) (Portland cement based) and also discusses the possible modifications that can be made in the models so that it can be used for steel fiber reinforced geopolymer concrete. Steel fibers have for long been used to enhance the tensile capacity of the concrete. This also improve the flexural performance and the post crack performance of the concrete. There are numerous studies carried out to evaluate the performance of steel fibre of different shapes, length and strength at different dosages. Many analytical and numerical models are available to predict this behavior. Most of the models are based on a large set of experimental results and hence can predict the behavior with an error of 10 to 20 percent. In this paper two such models have been adopted to verify the behavior of steel fibre reinforced geopolymer concrete in compression. A flexural model proposed by van Zijl and Mbeweb has been adopted to verify its ability to predict the moment carrying capacity of steel fibre reinforced geopolymer concrete.  The maximum stress predicted by compression models were more than the experimental stress, though the strain levels match to a greater degree. The flexural model predicted lower moment than the actual experimental values. Hence it could be inferred that existing models needed some modifications to predict the behavior of steel fibre reinforced geopolymer concrete.  <i>Keywords: </i>Geopolymer concrete, Steel fibres, Alkali activation, Fly ash concrete, Slag concrete. </p>
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