This report addresses the issue of the hazardous nature of fibrous materials, such as asbestos and man-made vitreous fibers, through two main studies: the determination of the percentage of asbestos in a sample with a cementitious matrix and the calculation of the length-weighted geometric mean diameter of man-made vitreous fibers. The first study combines a chemical-analytical procedure with scanning electron microscopy analysis to determine the weight percentage of asbestos in the sample, which is found to be 5.67%, composed entirely of chrysotile. The second study utilizes SEM techniques to measure the diameter of fibers in a sample of mineral wool, classifying them as carcinogenic due to a mean diameter of 2.73 μm.
Il presente elaborato affronta il tema della pericolosità dei materiali fibrosi, quali amianto e fibre artificiali vetrose, attraverso due studi principali: la determinazione della percentuale di amianto in un campione a matrice cementizia e il calcolo del diametro medio geometrico ponderato rispetto alla lunghezza delle fibre artificiali vetrose. Il primo studio combina una procedura chimico-analitica con analisi al microscopio elettronico a scansione per determinare la percentuale ponderale di amianto nel campione, che risulta pari al 5,67% ed è composta interamente da crisotilo. Nel secondo studio vengono invece applicate tecniche SEM per misurare il diametro delle fibre di un campione di lana minerale, classificandole come cancerogene, in quanto presentano un diametro medio di 2,73μm
Analisi della pericolosità dei materiali fibrosi: stima della percentuale di amianto e del diametro medio delle fibre artificiali vetrose
CEOLOTTO, THOMAS
2024/2025
Abstract
This report addresses the issue of the hazardous nature of fibrous materials, such as asbestos and man-made vitreous fibers, through two main studies: the determination of the percentage of asbestos in a sample with a cementitious matrix and the calculation of the length-weighted geometric mean diameter of man-made vitreous fibers. The first study combines a chemical-analytical procedure with scanning electron microscopy analysis to determine the weight percentage of asbestos in the sample, which is found to be 5.67%, composed entirely of chrysotile. The second study utilizes SEM techniques to measure the diameter of fibers in a sample of mineral wool, classifying them as carcinogenic due to a mean diameter of 2.73 μm.File | Dimensione | Formato | |
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Ceolotto_Thomas.pdf
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https://hdl.handle.net/20.500.12608/82898