Influence of steel fibre reinforcement on the workability of self-compacting concrete

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Keyword: Engineering and Technology, Civil Engineering, Infrastructure Engineering, Teknik och teknologier, Samhällsbyggnadsteknik, Infrastrukturteknik, Structural Engineering, Konstruktionsteknik
Publication year: 2000
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SDG 11 Sustainable cities and communitiesSDG 9 Industry, innovation and infrastructure
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This study consists of results of workability tests for concrete mixes using various amounts and types of steel fibres. The mixes are proportioned using the addition of filler and superplasticizer in order to obtain Self-Compacting Concrete (SCC) before addition of fibres. The test methods that have been used are the slump flow test and a modified L-box test. The results show the general correlation between the measured workability parameters and fibre volume and shape. The results show that the type of concrete mix used clearly affects the relative behaviour of using various types and amounts of steel fibres. In some of the mixes the influence of fibres can be detected by a decrease in flowability as the fibre amount or fibre aspect ratio increase. However, in the case of well-proportioned SCC the workability is not influenced by the steel fibres added within realistic amounts, i.e. 60 kg/m exp 3 for a fibre aspect ratio up to 100. The tests imply therefore, that it is quite feasible to use fibres in combination with SCC for structural applications.


Patrik Groth

Luleå tekniska universitet
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Håkan Thun

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