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Experimental Investigation on Improving the characteristic Properties of concrete using Crimped Steel fibres


Author(s):

Zahid Bashir Bhat , NIT srinagar; Danish Iqbal, J&K govt; Sahil Bhat, Ericsson; Muneeb Anwar Shah, Al madad; Irfan Latief, KITE polytechnic

Keywords:

Ductility, Steel fibres, Compressive strength, Splitting tensile strength, flexural strength

Abstract:

Concrete is strong in compression, as the aggregate efficiently carries the compressive load. However, it is weak in tension as the cement paste holding the aggregate in place can crack, allowing the structure to fail. It also has low energy absorption capacity and negligible ductility. Addition of fibres can impart ductility to concrete and substantially increase the energy absorption characteristics and its ability to withstand cyclic/repeated monotonic shocks and impact loading. In the present work, an effort is made to study the possible improvements in the characteristic properties of concrete using crimped steel fibres. Crimped steel fibres with varying percentage of 0.5%, 1%, 1.5%, 2%, 2.5% and 3% were added in M-20 Concrete specimens. The concrete specimens were tested for 7 days, 14 day and 28 day compressive strength, flexural strength and splitting tensile strength and the results obtained were compared with those of normal concrete mix without fibres. The optimum dosage of fibres that could be used without harming the properties of concrete was also assessed. The results concluded that the addition of 1% fibres by volume leads to considerable improvement in early as well as long term compressive strength, split tensile strength and flexural strength of concrete. Compressive strength of M-30 was obtained by 1% addition of fibres to designed concrete mix of M-20.


Other Details:

Manuscript Id :IJSTEV2I11198
Published in :Volume : 2, Issue : 11
Publication Date: 01/06/2016
Page(s): 501-508
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