Effect of using waste metallurgical sludge in concrete on the environment.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27120%2F23%3A10253570" target="_blank" >RIV/61989100:27120/23:10253570 - isvavai.cz</a>

Result on the web

<a href="https://www.fast.vsb.cz/export/sites/fast/228/cs/mmconference/mm-historie/mm2023_sbornik_abstraktu.pdf" target="_blank" >https://www.fast.vsb.cz/export/sites/fast/228/cs/mmconference/mm-historie/mm2023_sbornik_abstraktu.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Effect of using waste metallurgical sludge in concrete on the environment.

Original language description

The ingredients (aggregates and cement) used in concrete are not only expensive, but their extraction also represents a major environmental burden. With these facts in mind, the scientific effort is to replace the used natural materials with secondary raw materials. These materials are often waste products created during construction production, whether they are fragments of bricks, original concrete structures, glass, or any other materials. Products from metallurgical production may be also important secondary raw materials, for example sludge (MSW), slag, or various dust removals. These kinds of materials are often used as a substitute for filler or as a partial substitute for cement. In this project, the concrete was made of MSW as a substitution of fine aggregate in various percentages, and the specimens were then crushed or grounded to use again as a substitution of a coarse aggregate in concrete. However, wastes from metallurgical production are often classified as hazardous, which would make it impossible to use them again. The chemical composition of MSW can vary depending on the specific manufacturing processes and the nature of the ores used. Therefore, it is necessary to prove that the waste intended to be used as a secondary raw material in another product, will not be harmful to the environment and to humans throughout its lifetime. As regards the production of concrete, it is necessary to guarantee that no chemical reactions occur during production that cause the formation of elements harmful to both human health and ecosystems. Therefore, the ecotoxicity of such concrete has to be determined before its use in construction.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20100 - Civil engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů