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Civil Engineering, Faculty of Architecture, Civil Engineering and Geodesy, University of Banja Luka, Banjaluka, Bosnia and Herzegovina
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Civil Engineering, Faculty of Architecture, Civil Engineering and Geodesy, University of Banja Luka, Banjaluka, Bosnia and Herzegovina
Civil Engineering, Faculty of Architecture, Civil Engineering and Geodesy, University of Banja Luka, Banjaluka, Bosnia and Herzegovina
Civil Engineering and Geodesy, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia
Civil Engineering and Geodesy, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia
Civil Engineering and Geodesy, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia
Civil Engineering and Geodesy, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia
Civil Engineering, Faculty of Architecture, Civil Engineering and Geodesy, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
Civil Engineering, Faculty of Civil Engineering, University of Beograd, Beograd, Serbia
Civil Engineering, Faculty of Architecture, Civil Engineering and Geodesy, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
Civil Engineering , Faculty of Architecture, Civil Engineering and Geodesy, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
The paper presents the results of our own experimental research on the effect of the high range water reducing admixture content – HRWRA (applied in the range from 0.8 to 1.2% by mass of cement – mc) on the properties of self-compacting concrete in the fresh and hardened state.
The research showed that increasing the HRWRA content leads to the entrapped porosity reduction – up to 44%, increase of flowability – up to 13%, reduction of viscosity – up to 31%, improvement of passing ability – up to 15% and degradation of sieve segregation resistance of concrete in fresh state – up to 60%. The beneficial effect of the increase in HRWRA was shown on the analysed properties in the hardened state: compressive strength at the age of 28 days – up to 13%, water absorption – up to 61% and freeze/thaw resistance – up to 10%. The difference in the participation of HRWRA from 0.8 to 1.2% mc does not have a statistically significant effect on the density and freeze/thaw resistance with a de-icing agent.
high range water reducing admixture, self-compacting concrete, durability, experimental research
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