17:45 - 19:30, No.2 Conference Room
Workshop B
Asbestos and Construction
Chairs: Naoki Toyama and Anders Englund
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Jerzy Dycze
Technology Building Materials Department, Krakow Technical University of Mining and Metallurgy, Poland
ABSTRACT
Number of samples of asbestos-cement roof sheets ware taken from roofs from buildings in small village, different towns and industrial centres. Samples surface was observed in SEM. It was found that surface corrosion depends on air pollution and is faster on AC roof plates in industrial centres and smallest on samples of AC plates from roofs from some little towns. Observations suggest, that AC plate breaking causes serious risk of releasing of asbestos fibres and that on new surface of broken plate is a number of asbestos fibres sticking out, partly damaged and any mechanical effect may produce respirabe fibres.