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Evaluation of the consistency of fiber reinforced cementitious composites

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Abstract

The rheological properties of fresh concrete, mortar or cement paste are among the most important parameters when cementitious building materials are placed. New material designs, like high or ultrahigh performance concretes, include the addition of a high volume of fibers to the fresh mix influencing its workability properties. However, the analysis of the rheological properties of fiber reinforced cementitious composites is difficult. Conventional methods mostly do not apply, especially when a high fiber content and relatively stiff mixtures are used. For this reason, a new method was developed to evaluate the workability of fiber reinforced composites. This method was applied to carbon and PVA fiber reinforced high performance composites and was used to optimize the rheological properties of these composites for an application in a centrifugation casting process.

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Kaufmann, J.P., Winnefeld, F., Hesselbarth, D. et al. Evaluation of the consistency of fiber reinforced cementitious composites. Mater Struct 39, 645–654 (2006). https://doi.org/10.1617/s11527-005-9016-5

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  • DOI: https://doi.org/10.1617/s11527-005-9016-5

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