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Combined Performance of Polypropylene Fibre and Weld Slag in High Performance Concrete

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Abstract

The effect of polypropylene fibre and weld slag on the mechanical properties of High Performance Concrete (HPC) containing silica fume as the mineral admixtures was experimentally verified in this study. Sixteen series of HPC mixtures(70 MPa) were designed with varying fibre fractions and Weld Slag (WS). Fibre added at different proportion (0, 0.1, 0.3 and 0.6%) to the weight of cement. Weld slag was substituted to the fine aggregate (0, 10, 20 and 30%) at volume. The addition of fibre decreases the slump at 5, 9 and 14%, whereas the substitution of weld slag decreases by about 3, 11 and 21% with respect to the control mixture. Mechanical properties like compressive strength, split tensile strength, flexural strength, Ultrasonic Pulse Velocity test (UPV) and bond strength were tested. Durability studies such as Water absorption and Sorptivity test were conducted to check the absorption of water in HPC. Weld slag of 10% and fibre dosage of 0.3% in HPC, attains the maximum strength and hence this combination is most favourable for the structural applications.

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Ananthi, A., Karthikeyan, J. Combined Performance of Polypropylene Fibre and Weld Slag in High Performance Concrete. J. Inst. Eng. India Ser. A 98, 405–412 (2017). https://doi.org/10.1007/s40030-017-0248-5

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  • DOI: https://doi.org/10.1007/s40030-017-0248-5

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