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  • Title: [Morphologic studies of asbestos-cement surfaces].
    Author: Krause J, Sobottka A.
    Journal: Z Gesamte Hyg; 1989 Jun; 35(6):323-5. PubMed ID: 2800628.
    Abstract:
    A scanning electron microscopic procedure was used for the investigation of asbestos-cement surfaces. The samples of uncoated asbestos-cement sheets were up to 50 years old, coated asbestos-cement materials were 16 years old in maximum. Our results demonstrate that suitable coating systems effectively protect the asbestos-cement surface. On the other hand uncoated asbestos-cement shows a release of asbestos fibres locked up in cement. Therefore uncoated asbestos-cement sheets are emission sources of asbestos fibres. Wether the weathered material coursed a increase of asbestos fibre concentration in ambient air will be a subject of further investigations.
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