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ISSN 2063-5346
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IMPACT OF COPPER COATED MACRO STEEL FIBRES ON HARDENED PROPERTIES OF SCC WITH PPC

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G. Sasikala, S.K.V.S.T. Lavakumar, S. Adiseshu
» doi: 10.31838/ecb/2023.12.1.100

Abstract

A study has been made to appraise the performance of Portland Pozzolanic blended Cement (PPC) with limited replacement of hypo-sludge and steel fibers. In this investigation, the self-compacting concrete (SCC) was achieved by EFNARC guidelines. To achieve fluidity, new generation superplasticizers based on polycarboxylic ethers were used. The hypo-sludge is used as cement replacement material in concrete to limit the CO2 emissions from cement industries. Limited replacements of sludge are 2, 4, 6, 8, 10, and 12% by cement weight. To determine the optimum dosage of hypo-sludge in self-compacting concrete, based on strength at 28 days. The maximum compressive strength obtained at 2 percent sludge in PPC considered as optimal dosage of hyposludge in self-compacting concrete mix (HYSCC). To this HYSCC mix, two different diameters of coppercoated macro steel fibres with various percentages 0.6, 0.8, 1.0 & 1.2 were added and different strength parameters like compressive, splitting, and flexural strength was calculated for all fibre reinforced selfcompacting concrete (FRSCC1 to FRSCC8). FRSCC1 to FRSCC4 represents the 0.2 mm diameter 13 mm cut length and FRSCC5 to FRSCC8 represents 0.3 mm diameter and 12 mm cut length. 150 mm cube for a compression test, 300×150 mm cylinder for splitting test, and 500×100×100 mm prism for tensile strength test specimens were cast. All test samples are cured at 7, 28, and 56 days before testing. The strength parameters achieved with fibre reinforced self-compacting concrete (FRSCC1 to FRSCC8) are compared with the conventional self-compacting concrete SCC0 and optimum hypo-sludge self-compacting concrete HYSCC and conclusions were made.

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