Decomposition and utilization of asbestos-cement waste

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F17%3AN0000022" target="_blank" >RIV/26232511:_____/17:N0000022 - isvavai.cz</a>

Výsledek na webu

<a href="http://uest.ntua.gr/athens2017/proceedings/pdfs/Athens2017_Stanek_Bohac.pdf" target="_blank" >http://uest.ntua.gr/athens2017/proceedings/pdfs/Athens2017_Stanek_Bohac.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Decomposition and utilization of asbestos-cement waste

Popis výsledku v původním jazyce

Asbestos-cement is an important material, both on landfills of hazardous waste and in the form of various products that are part of the currently used constructions. Since asbestos has been classified as a hazardous chemical, it is desirable to propose a practical and safe procedure for the disposal of asbestos-cement products, or even better to re-use them. In this work, the temperature conditions of degradation of samples of various types of asbestos and products containing asbestos were examined. Samples were burnt at different temperatures and monitored by X-ray diffraction, DTA, light and electron microscopy. By evaluation of changes at different burning temperatures, the previous findings on the decomposition of asbestos minerals have been confirmed. Chemical analysis revealed that asbestos-cement products have a favorable composition that corresponds to low-saturated Portland cement clinker. It has been found that the burning of asbestos cement materials alone or with the addition of limestone at the temperature above 1,100 °C leads to the decomposition of hazardous asbestos and, after the addition, with or without the addition of a solidification regulator, quality hydraulic binder is formed with sufficient technological parameters that can be utilized in the building industry. Proceedings of the 5th International Conference on Sustainable Solid Waste Management, Athens. 21-24 June 2017, p 9.

Název v anglickém jazyce

Decomposition and utilization of asbestos-cement waste

Popis výsledku anglicky

Asbestos-cement is an important material, both on landfills of hazardous waste and in the form of various products that are part of the currently used constructions. Since asbestos has been classified as a hazardous chemical, it is desirable to propose a practical and safe procedure for the disposal of asbestos-cement products, or even better to re-use them. In this work, the temperature conditions of degradation of samples of various types of asbestos and products containing asbestos were examined. Samples were burnt at different temperatures and monitored by X-ray diffraction, DTA, light and electron microscopy. By evaluation of changes at different burning temperatures, the previous findings on the decomposition of asbestos minerals have been confirmed. Chemical analysis revealed that asbestos-cement products have a favorable composition that corresponds to low-saturated Portland cement clinker. It has been found that the burning of asbestos cement materials alone or with the addition of limestone at the temperature above 1,100 °C leads to the decomposition of hazardous asbestos and, after the addition, with or without the addition of a solidification regulator, quality hydraulic binder is formed with sufficient technological parameters that can be utilized in the building industry. Proceedings of the 5th International Conference on Sustainable Solid Waste Management, Athens. 21-24 June 2017, p 9.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20500 - Materials engineering

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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