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Advances in Concrete Construction Volume 13, Number 2, February 2022 , pages 123-132 DOI: https://doi.org/10.12989/acc.2022.13.2.123 |
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Strength and toughness prediction of slurry infiltrated fibrous concrete using multilinear regression |
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Ajay P. Shelorkar and Pradip D. Jadhao
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| Abstract | ||
| This paper aims to adapt Multilinear regression (MLR) to predict the strength and toughness of SIFCON containing various pozzolanic materials. Slurry Infiltrated Fibrous Concrete (SIFCON) is one of the most common terms used in concrete manufacturing, known for its benefits such as high ductility, toughness and high ultimate strength. Assessment of compressive strength (CS.), flexural strength (F.S.), splitting tensile strength (STS), dynamic elasticity modulus (DME) and impact energy (I.E.) using the experimental approach is too costly. It is time-consuming, and a slight error can lead to a repeat of the test and, to solve this, alternative methods are used to predict the strength and toughness properties of SIFCON. In the present study, the experimentally investigated SIFCON data about various mix proportions are used to predict the strength and toughness properties using regression analysis-multilinear regression (MLR) models. The input parameters used in regression models are cement, fibre, fly ash, Metakaolin, fine aggregate, blast furnace slag, bottom ash, water-cement ratio, and the strength and toughness properties of SIFCON at 28 days is the output parameter. The models are developed and validated using data obtained from the experimental investigation. The investigations were done on 36 SIFCON mixes, and specimens were cast and tested after 28 days of curing. The MLR model yields correlation between predicted and actual values of the compressive strength (C.S.), flexural strength, splitting tensile strength, dynamic modulus of elasticity and impact energy. R-squared values for the relationship between observed and predicted compressive strength are 0.9548, flexural strength 0.9058, split tensile strength 0.9047, dynamic modulus of elasticity 0.8611 for impact energy 0.8366. This examination shows that the MLR model can predict the strength and toughness properties of SIFCON. | ||
| Key Words | ||
| blast furnace slag; compressive strength; fibre reinforced concrete; flexural strength; fly ash; impact; metakaolin; MLR; SIFCON; toughness | ||
| Address | ||
| Ajay P. Shelorkar: Department of Civil Engineering, K. K. Wagh Institute of Engineering Education and Research, Hirabai Haridas Vidyanagari, Amrut Dham, Panchwati, Nashik -422003, India Pradip D. Jadhao: Department of Civil Engineering, K. K. Wagh Institute of Engineering Education and Research, Hirabai Haridas Vidyanagari, Amrut Dham, Panchwati, Nashik -422003, India | ||
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