Behaviour of Reinforced Concrete Beam with Cement Replaced By GGBFS and Fine Aggregate Replaced By GBFS

Author(s):

Jebin Varghese , MAR BASELIOS COLLEGE OF ENGINERING AND TECHNOLOGY; Tom George, MAR BASELIOS COLLEGE OF ENGINEERING AND TECHNOLOGY

Keywords:

Compressive strength, Flexural strength, Ground Granulated Blast Furnace Slag, Granulated Blast Furnace Slag, Ordinary Portland Cement, Split tensile strength

Abstract:

The present study focuses on the structural behaviour of reinforced concrete beams with Ground Granulated Blast Furnace Slag (GGBFS) and Granulated Blast Furnace Slag (GBFS). Ordinary Portland Cement was replaced with GGBFS and fine aggregate is replaced with GBFS in M40 grade concrete of water cement ratio 0.4. Cement was replaced with GGBFS for various percentages such as 0%, 25%, 30%, 35%, 40%, 45%, 50%, and 55%. The optimum cement replacement was obtained at 45%. Replacements for fine aggregates are 0%, 25%, 30%, 35%, 40%, 45%, 50%, 55%. The optimum for fine aggregate replacement was found to be 45%. In the next stage a combination replacement was carried out i.e. cement replacement is fixed at 45% and fine aggregate replacements were done for various percentages (0%, 25%, 30%, 35%, 40%, 45%, 50%, 55%). In this combination replacement the optimum was obtained at 30% fine aggregate replacements. These optimum replacements for cement and fine aggregates were used to cast beam specimens. These beams were tested under two-point loading to study the flexural behaviour. After conducting flexural strength test the parameters such as first crack load, yield load, displacement ductility index and curvature ductility index were studied and compared with control beams. The results were found to be comparable with control specimens.

Other Details:

Manuscript Id	:	IJSTEV2I4010
Published in	:	Volume : 2, Issue : 4
Publication Date	:	01/11/2015
Page(s)	:	55-62

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