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Formation of rheological propertiesof fresh polypropylene fibre reinforcedmortar and concrete


Studies on polypropylene fibre reinforced mortar and concrete

 


The present article describes a study on the determination of rheological parameters of polypropylene fibre reinforced fresh mortar (PFRFM) and polypropylene fibre reinforced fresh concrete (PFRFC) in the form of their respective yield value g and plastic viscosity h. During experimentation, PFRFM and PFRFC behaved as a Bingham or nonlinear Herschel-Bulkley bodies. The rheological parameters were determined using two rheometers: one for mortars and the other for concrete mixes. In the course of the research, the experimental verification of the influence of w/c ratio, superplasticiser dosage (SP), fibre volume fraction and fibre length on the rheological properties of PFRFM and PFRFC were investigated. The first step in this research was a rheological identification of PFRFM and PFRFC, which was achieved with the help of experimental flow curves and the application of adequate models and rheological equations. Subsequently, these factors were analysed and their influence on the rheological behaviour of fresh mortar and concrete was investigated.

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The Silesian University of Technology,
Department of Materials Engineering and Building Processes
Akademicka 5, 44-100 Gliwice, Poland
www.plosl.pl
Tomasz.Ponikiewski@polsl.pl


CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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