Flexural behaviour of small steel fibre reinforced concrete slabs |
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| Affiliation: | Department of Civil Engineering, Sharif University of Technology, Tehran, Iran;Karadeniz Technical University, Department of Civil Engineering, 61080 Trabzon, Turkey;School of Civil Engineering, Wuhan University, Wuhan 430072, China;Department of Architecture, Built Environment and Construction Engineering (ABC), Politecnico di Milano, Piazza L. da Vinci, 33- 20133, Milan, Italy;Department of Civil Engineering, Sharif University of Technology, Tehran, Iran;Unit for Construction Materials, Department of Civil Engineering, Stellenbosch University, South Africa;ISISE, Department of Civil Engineering, University of Minho, Guimarães, Portugal |
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| Abstract: | Influence of length and volumetric percentage of steel fibres on energy absorption of concrete slabs with various concrete strengths is investigated by testing 28 small steel fibre reinforced concrete (SFRC) slabs under flexure. Variables included; fibre length, volumetric percentage of fibres and concrete strength. Test results indicate that generally longer fibres and higher fibre content provide higher energy absorption. The results are compared with a theoretical prediction based on random distribution of fibres. The theoretical method resulted in higher energy absorption than that obtained in experiment. A design method according to allowable deflection is proposed for SFRC slabs within the range of fibre volumetric percentages used in the study. The method predicts resisting moment–deflection curve satisfactorily. |
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