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Influence of mixing procedure and mixer type on fresh and hardened properties of concrete: a review

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Abstract

Mixing concrete is not yet a fully understood issue, with many parameters having an influence on the resulting fresh and hardened concrete properties. Even for the same composition, a somewhat different microstructure can be obtained by changing the mixing procedure and the mixer type. A mixing procedure can differ in mixing time, mixing speed, air pressure in the mixing pan, addition time of the superplasticizer, temperature, etc. The concrete industry shows a great interest in controlling these influences in order to produce a concrete of which the mechanical, rheological and durability properties are well known. In this overview, different concrete mixers, mixing times, mixing speeds, different addition times of the superplasticizer and a different air pressure in the mixing pan will be examined. A review of existing literature is presented, as well as some new experimental results.

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Acknowledgments

The financial support of the Hercules Foundation and of the Fund for Scientific Research Flanders is greatly acknowledged.

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Authors and Affiliations

  1. Magnel Laboratory for Concrete Research, Ghent University, 9000, Ghent, Belgium

    J. Dils & G. De Schutter

  2. Department of Construction, Faculty of Applied Engineering Sciences, University College Ghent, 9000, Ghent, Belgium

    V. Boel

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  1. J. Dils
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  2. G. De Schutter
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  3. V. Boel
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Correspondence to J. Dils.

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Dils, J., De Schutter, G. & Boel, V. Influence of mixing procedure and mixer type on fresh and hardened properties of concrete: a review. Mater Struct 45, 1673–1683 (2012). https://doi.org/10.1617/s11527-012-9864-8

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  • DOI: https://doi.org/10.1617/s11527-012-9864-8

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