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Kujawa, Magdalena, 2024, "Investigation of the thermal decomposition of chrysotile asbestos and asbestos cement material under reduced pressure", https://doi.org/10.18150/R3VFAJ, RepOD, V1
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Zbiór zawiera wyniki badań związanych z realizacją projektu Miniatura 7 pt. „Badania rozkładu termicznego azbestu chryzotylowego i materiału azbestowo-cementowego w warunkach obniżonego ciśnienia”.
Celem projektu było zbadanie rozkładu termicznego azbestu chryzotylowego i wyrobów azbestowo-cementowych w różnych warunkach, w tym przy normalnym i obniżonym ciśnieniu. W ramach projektu przeprowadzono badania włókien chryzotylowych i płyt azbestowo-cementowych. Oba materiały poddano dwóm rodzajom obróbki cieplnej, tj. konwencjonalnej obróbce cieplnej i przy obniżonym ciśnieniu. W obu wariantach materiał ogrzewano w przedziale temperatur 600 a 800°C (zakres temperatur dehydroksylacji i tworzenia nowych faz mineralnych) przez 2 godziny. Otrzymane materiały badano metodami DTA-TG, XRD, SEM, FT-IR i XRF. Efektem proponowanej pracy badawczej było uzyskanie wyników porównawczych wpływających zarówno na warunki obróbki cieplnej, jak i na proces dehydroksylacji i tworzenia nowych faz materiałów azbestowych. W materiałach zawierających azbest możliwe jest przy zastosowaniu obniżonego ciśnienia (niskiej próżni), obniżenie temperatury dehydroksylacji i krystalizacji nowych faz w celu uzyskania materiału nieszkodliwego.
The collection contains the results of research related to the implementation of the Miniatura7 project entitled "Investigation of the thermal decomposition of chrysotile asbestos and asbestos cement material under reduced pressure".
The project aimed to research the thermal decomposition of chrysotile asbestos and asbestos-cement products under various conditions, including normal and reduced pressure. As part of the project, tests were performed on chrysotile fibres and asbestos-cement sheets. Both materials were subjected to two types of heat treatment, i.e. conventional heat treatment and under reduced pressure. In both variants, the material was heated between 600-800°C (temperature of dehydroxylation and formation of new mineral phases) for 2 hours. The obtained materials were examined using methods such as DTA-TG, XRD, SEM, FT-IR and XRF. The effect of the proposed scientific activity was to obtain comparative results influencing both heat treatment conditions on the process of dehydroxylation and the formation of new phases of asbestos materials. In materials containing asbestos, it is possible to use reduced pressure (low vacuum) to lower the temperature of dehydroxylation and crystallization of new phases in order to obtain a harmless material.
chrysotile asbestos, asbestos cement materials, thermal decomposition, thermal analysis, XRD
CC BY - Creative Commons Attribution 4.0
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