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Materials 2017, 10(5), 505; doi:10.3390/ma10050505

Ecotoxicity of Concretes with Granulated Slag from Gray Iron Pilot Production as Filler

1
Department of Environmental Engineering, Faculty of Ecology and Environmental Sciences, Technical University in Zvolen, Zvolen 960 01, Slovakia
2
Department of Environmental Management, Faculty of Natural Sciences, Matej Bel University, Banská Bystrica 974 01, Slovakia
3
Hronec 976 45, Slovakia
*
Author to whom correspondence should be addressed.
Academic Editor: Jorge de Brito
Received: 28 March 2017 / Revised: 3 May 2017 / Accepted: 4 May 2017 / Published: 6 May 2017
(This article belongs to the Section Manufacturing Processes and Systems)
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Abstract

This paper focuses on research concerning the ecotoxicological properties of granulated slag from the pilot production of gray iron with red mud addition and concrete composites with the application of this slag. Red mud is a hazardous waste generated in the production of aluminium oxide. Negative ecotoxicological tests are, therefore, one of the basic prerequisites for the ability to use granulated slag from gray iron pilot production. Granulated slag and concrete composite samples with various ratios of granulated slag have been subject to ecotoxicity tests: determining root growth inhibition in the highly-cultivated plant Sinapis alba, and determining acute toxicity in Daphnia magna. The results of ecotoxicological testing of granulated slag from gray iron standard production and gray iron pilot production with the additive were, according to the standard (STN 83 8303), negative. Additionally, the results of ecotoxicological tests of concrete composites were negative, with the exception of a 50% substitution of fine aggregate with slag from gray iron pilot production. View Full-Text
Keywords: red mud; gray iron; granulated slag; concrete composite; ecotoxicity tests red mud; gray iron; granulated slag; concrete composite; ecotoxicity tests
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Hybská, H.; Hroncová, E.; Ladomerský, J.; Balco, K.; Mitterpach, J. Ecotoxicity of Concretes with Granulated Slag from Gray Iron Pilot Production as Filler. Materials 2017, 10, 505.

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